
GITNUXSOFTWARE REVIEW
Marketing AdvertisingTop 10 Best Bulk Mailer Software of 2026
Compare bulk mailer software tools for email campaigns, including Mailchimp, AWeber, and MailerLite, with tradeoffs for shortlisting.
How we ranked these tools
Vendors set the topic, but our editors set the inclusion criteria and the evaluation framework before research starts.
AI search agents find sources, extract figures with provenance, and aggregate written reviews. They also transcribe video reviews and podcasts.
Framework: Features 40% · Ease 30% · Value 30%
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MailerLite is the best choice for SMB marketing teams that want visual automation and segmentation without heavy engineering because its journeys can branch on subscriber events and route to different follow-ups. Mailgun is the alternative for teams needing programmable bulk sending and delivery signals thanks to its event webhooks and bounce handling for a full feedback loop.
Editor’s top 3 picks
Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.
MailerLite
Visual automation journeys can branch on subscriber events like clicks and page actions, then route to different follow-up messages.
Best for: Fits when marketing teams need visual automation and segmentation without heavy engineering.
AWeber
Editor pickSubscriber event automations that update tags and move contacts across lists without custom integration work.
Best for: Fits when email marketers need fast campaign workflows with light technical integration.
Mailchimp
Editor pickJourney Builder combines contact events, conditional branches, and time delays into reusable automation workflows.
Best for: Fits when marketing teams want visual journey automation and API-backed integrations without MTA administration.
Comparison Table
MailerLite
SMBEmail marketing platform with drag-and-drop editor.
Visual automation journeys can branch on subscriber events like clicks and page actions, then route to different follow-up messages.
MailerLite fits email marketing teams that want to run end-to-end workflows in one place, from campaign builds to event-driven automations. The automation builder can sequence messages, apply conditional branching, and use event triggers tied to subscriber activity. Deliverability settings include DKIM signing and SPF and DMARC configuration helpers, which reduce the number of separate steps needed for basic domain authentication. Reporting covers standard engagement metrics and email-level outcomes to support iteration across campaigns and journeys.
A tradeoff appears in governance depth when multiple teams require strict role separation and granular admin auditing, since advanced controls are not as detailed as in enterprise-focused suites. MailerLite works best when a marketing owner or small ops group manages templates, segments, and automations, then hands off execution to other users with clear list and workflow ownership.
- +Visual automation builder supports branching and time-based steps
- +Segmentation and tags keep lifecycle messaging structured
- +Deliverability tooling includes DKIM signing and DMARC guidance
- +Performance reporting connects campaigns to subscriber engagement
- –Advanced admin governance is thinner than enterprise email suites
- –Automation complexity can become hard to reason about at scale
Email marketing managers
Run newsletter-to-lifecycle journeys
Higher repeat engagement
Lifecycle marketers
Automate welcome and reactivation flows
Lower time-to-conversion
Show 1 more scenario
Growth teams
Coordinate landing pages and email capture
More consistent lead follow-up
Tie sign-up events from landing pages to automated sequences and tag-based segmentation.
Best for: Fits when marketing teams need visual automation and segmentation without heavy engineering.
AWeber
SMBEmail marketing solution for small businesses.
Subscriber event automations that update tags and move contacts across lists without custom integration work.
AWeber fits email marketing teams that run repeatable campaigns, use visual templates, and want automation without building custom infrastructure. Segmentation and tag-based targeting are available for organizing subscribers, and campaign reporting tracks engagement by send. Automation includes rules that react to events like signup and clicks, with actions that move subscribers into lists or tag states.
The main tradeoff is integration reach. Built-in workflows are easier than code, but API surface and data synchronization for complex subscriber models are not as flexible as platforms that treat email as an API-first channel. AWeber works well when the team owns the list lifecycle and wants fast campaign execution with consistent governance around unsubscribes and audience targeting.
AWeber is most usable when deliverability is handled through repeatable operations like double opt-in and consistent list cleanup routines. Where programmatic onboarding or high-volume subscriber writes must run from external systems, a more developer-oriented tool can reduce custom glue work.
- +Tag-based segmentation supports practical audience splits
- +Visual email editor speeds newsletter and sequence creation
- +Automation rules react to subscriber events and engagement
- +Campaign reporting ties sends to opens and click activity
- –API-driven subscriber synchronization is limited for complex data models
- –Automation branching is less expressive than workflow engines
- –Deliverability tuning options are narrower than developer-first systems
- –Multi-account governance for larger teams requires extra process
Marketing managers
Weekly newsletters with rule-based follow-ups
More consistent post-signup nurture
Growth teams
Landing page signups with segmentation
Better targeted messaging
Show 2 more scenarios
CRM administrators
Routine subscriber updates from internal tools
Fewer stale audience lists
Exports and sync-oriented workflows keep audience data current for campaign sends.
Email operations teams
Governed unsubscribes and suppression handling
Lower compliance risk
Central unsubscribe state reduces accidental sends to opted-out recipients across campaigns.
Best for: Fits when email marketers need fast campaign workflows with light technical integration.
Mailchimp
SMBAll-in-one email marketing and automation platform.
Journey Builder combines contact events, conditional branches, and time delays into reusable automation workflows.
Mailchimp targets marketing teams that need list building, segmentation, and campaign publishing with minimal infrastructure work. Its automation uses visual journeys tied to contacts, events, and campaign actions, while DKIM signing and SPF alignment are available for domain authentication.
The API supports sending, campaign and audience management, and webhook delivery for message and campaign activity. Deliverability controls rely on list hygiene tooling such as suppression handling and unsubscribe management rather than exposing MTA configuration.
- +Visual automation journeys connect events to targeted email actions
- +Webhooks provide campaign and sending event callbacks for integrations
- +Built-in audience management includes segmentation and suppression lists
- +Domain authentication setup covers DKIM signing and SPF alignment
- –Advanced sending workflows often require extra configuration in journeys
- –Deliverability controls are limited compared with full SMTP relay governance
CRM marketers
Personalize outreach using contact attributes
More relevant targeting at scale
Ecommerce marketing teams
Automate cart recovery and post-purchase
Faster lifecycle follow-up
Show 2 more scenarios
Demand generation teams
Run signup-based lead nurture sequences
Consistent follow-up across stages
Prospects enter timed email journeys based on signup details and engagement milestones.
Performance marketers
Test email variants across subscriber groups
Evidence-driven messaging improvements
Campaign experimentation compares engagement results for message and subject variants by group.
Best for: Fits when marketing teams want visual journey automation and API-backed integrations without MTA administration.
Mailjet
SMBEmail API and marketing platform for teams.
Event webhooks that map delivery outcomes into external automation workflows for campaign operations.
Mailjet fits bulk mailing teams that want control over message creation and delivery using API calls and SMTP handoff. DKIM signing and authentication support help with domain alignment, and account-level features support multi-identity sending through sender configuration and suppression handling. Automation is driven by webhook events for delivery outcomes and by structured campaign requests that map cleanly to external systems.
- +API-first bulk sending with webhook event callbacks for delivery tracking
- +SMTP relay support for MTA integrations and existing messaging pipelines
- +Authentication controls for DKIM signing and sender domain alignment
- +Suppression handling to reduce repeated sends to known recipients
- –Campaign authoring UX is less centered on marketer workflows than API-led sending
- –Operational governance needs discipline to manage senders, templates, and preferences
Marketing operations teams
Automate post-send reconciliation
Faster operational decisioning
Engineering teams
Programmatic bulk campaigns
Repeatable campaign delivery
Show 1 more scenario
CRM and app teams
SMTP relay for notifications
Minimal app-side changes
Existing application mailers relay through Mailjet while downstream systems consume send results.
Best for: Fits when email teams need API-driven bulk dispatch and automated delivery tracking.
Mailgun
API-firstProgrammable email platform for transactional and bulk sending.
Event webhooks paired with bounce processing provide a full delivery feedback loop without external log parsing.
Mailgun is a bulk email delivery service built around an API-first MTA and message handling workflow. It supports domain-based authentication with DKIM signing and SPF alignment, plus configurable suppression and unsubscribe handling for list governance.
- +API and SMTP relay both support high-volume sending workflows
- +Event webhooks deliver granular delivery, bounce, and complaint signals
- +Built-in suppression and unsubscribe behavior reduces list hygiene drift
- +DKIM signing and SPF alignment are first-class delivery configuration
- –Non-UI onboarding requires MTA and domain configuration discipline
- –Marketing automation logic needs external orchestration for complex journeys
Backend engineering teams
Send transactional alerts via API
Reliable delivery from services
Marketing engineers
Provide programmable delivery infrastructure
Measurable campaign delivery
Show 2 more scenarios
Email operations teams
Govern authenticated sender domains
Operational sender control
Managed DKIM and SPF alignment organizes sending domains, subdomains, and message routing boundaries.
Customer support engineers
Diagnose bounce and event failures
Faster incident diagnosis
Bounce processing and message status webhooks support investigations into delivery failures and engagement signals.
Best for: Fits when email marketing teams need API-driven bulk delivery control and event-based automation.
Constant Contact
SMBEmail and digital marketing platform for small businesses.
Guided marketing automation for newsletters and lifecycle touchpoints inside the same workflow as campaign creation.
Constant Contact emphasizes marketing-team workflows around newsletter creation, list management, and compliance-focused sending controls. It provides guided campaign tools, including drag-and-drop email design, contact imports, and segmentation based on list and engagement fields.
- +Drag-and-drop email builder with reusable templates speeds routine newsletters
- +Contact tagging and segmentation support repeatable targeting without custom code
- +Marketing automations cover welcome and engagement follow-ups with visual flow editing
- +API access supports syncing contacts and campaign event data to internal tools
- –Advanced list governance requires disciplined use of tags and suppression inputs
- –Automation logic is less granular than rule engines that support multi-branch conditions
Nonprofit newsletter teams
Publish recurring newsletters to segments
Regular newsletter output
Small business marketers
Send targeted seasonal promotions
Organized promotional outreach
Show 2 more scenarios
Event organizers
Automate confirmations and reminders
Timely event communication
Lifecycle automation sends confirmation, reminder, and post-event messages tied to registrations and attendance.
Membership organizations
Trigger welcome series after signup
More consistent new-member messaging
Automation sends an onboarding sequence after a contact signs up or joins a mailing list.
Best for: Fits when teams need guided email workflows, practical segmentation, and automation without heavy engineering.
MailerQ
enterpriseHigh-performance Mail Transfer Agent for bulk email.
Delivery webhooks with event-level tracking let external systems reconcile send outcomes to internal campaign records.
MailerQ provides bulk email sending through SMTP relay and an MTA-style interface that also supports list management for ongoing campaigns. It focuses on automation around queued sending, per-recipient controls, and bounce feedback processing to keep lists usable.
- +API and webhook delivery events support automated campaign pipelines
- +Queued sending improves pacing control for high-volume bursts
- +Bounce processing supports practical list hygiene across cycles
- +Suppression list handling reduces repeat sends to known non-responders
- –Setup requires careful message format and header configuration
- –Workflow automation is less visual than campaign-first marketing tools
Revenue operations teams
Automate queued campaign sends via API
Fewer manual campaign operations
Marketing ops engineers
Maintain suppression lists from bounces
Cleaner deliverability over time
Show 2 more scenarios
Transactional messaging teams
Control per-recipient sending behavior
More consistent message delivery
Applies recipient-level rules while sending from a centralized MTA-style interface.
Platform integration developers
Trigger sends and track events
Faster system-side workflows
Uses webhooks and API delivery events to monitor outcomes without dashboard polling.
Best for: Fits when email marketing teams need API-driven bulk sends with queue control and suppression handling.
Klaviyo
vertical specialistEmail marketing and automation platform for ecommerce.
Klaviyo’s event-triggered flow builder can start journeys from granular customer events and properties, not only list status.
Klaviyo is a bulk email and SMS marketing system built around event-driven segmentation and lifecycle automation. Email sending is tied to unified customer profiles, where behavioral and transactional events drive list segmentation and triggered campaigns.
- +Event-triggered flows connect behavioral data to triggered email and SMS
- +Customer profile stitching supports segmentation beyond static list membership
- +Webhooks and API enable syncing events and consuming delivery signals
- +Built-in suppression handling reduces resend risk after bounces and unsubscribes
- –Governance is required to keep event naming and profile properties consistent
- –Template editing can feel limiting for teams needing highly customized HTML layouts
- –Complex flow debugging needs discipline when multiple triggers fire on the same profile
- –Higher-volume teams may need careful configuration to avoid backlog during peak sends
Marketing operations teams
Keep dynamic audiences current
Less manual list maintenance
Omnichannel ecommerce marketers
Coordinate email and SMS lifecycle messaging
More consistent cross-channel communication
Show 2 more scenarios
Subscription and membership teams
Automate reminders around subscription events
Timely subscription milestone updates
Lifecycle messaging coordinates renewals, shipments, and membership changes with event-based triggers.
Retention and CRM teams
Automate reactivation for inactive customers
Structured customer re-engagement
Win-back flows use purchase history and engagement signals to schedule reactivation messages by recency.
Best for: Fits when marketing teams need event-based email automation with strong API and segmentation control.
Moosend
SMBEmail marketing and automation platform.
Webhook delivery events paired with its automation triggers let external systems start or route customer journeys.
Moosend sends marketing emails and automations with a focus on segmentation-driven messaging and configurable campaign journeys. Teams can build multi-step flows using its visual automation editor and connect campaign triggers to events captured in the contact profile.
- +Visual automation editor supports event-based triggers and conditional steps
- +API and webhooks extend sending and contact updates for custom workflows
- +Built-in suppression and contact controls reduce repeated sends to removed users
- +Segmentation rules apply directly to campaigns and automation paths
- –Advanced automation debugging requires careful inspection of event and entry history
- –Deliverability tooling depends on users configuring domain authentication records
Marketing agencies
Execute template-based bulk campaigns
Centralized campaign execution
Small business marketing teams
Build conditional lead nurture sequences
Structured nurture progression
Show 2 more scenarios
Email operations teams
Import contacts and manage consent
Cleaner, governed mailing lists
Contacts can be imported, fields mapped, tags applied, consent states handled, and suppression lists maintained.
Developers in marketing ops
Trigger messaging from external events
Automation tied to external activity
API and webhooks connect external events to list and automation actions that send follow-up messages.
Best for: Fits when email marketing teams need event-triggered automations with API extensibility and tight contact controls.
Campaign Monitor
SMBEmail marketing software for brands and agencies.
Event-triggered journeys driven by subscriber activity in a visual builder with API-managed audiences.
Campaign Monitor focuses on email campaign execution with list segmentation, automated journeys, and reusable templates for consistent bulk sending. Deliverability controls center on DKIM signing with domain-level verification and suppression workflows for bounce and unsubscribe handling.
- +Automation builder supports event-triggered journeys without custom code
- +Template system keeps design consistent across recurring bulk campaigns
- +API covers subscriber management, list provisioning, and send triggers
- +Suppression handling reduces repeat sends to unsubscribed contacts
- –Advanced deliverability controls are less granular than MTA-level setups
- –Webhook event coverage for edge cases can be limited for complex workflows
- –Governance for multi-user publishing lacks deep audit logging detail
- –Throughput tuning is constrained by built-in sending infrastructure
Marketing operations teams
Trigger emails from external systems
Event-linked email delivery
Lifecycle marketers
Deliver journey-based nurture messages
More relevant follow-ups
Show 2 more scenarios
Marketing teams
Send onboarding after new subscriptions
Consistent new-contact sequence
Welcome and follow-up messages trigger from signup events and subscriber attributes.
Lifecycle marketing teams
Run engagement-based re-engagement
Structured reactivation messaging
Scheduled or triggered campaigns follow up with less active subscribers using audience rules.
Best for: Fits when mid-market email teams need automation plus an API for controlled bulk sending.
Conclusion
After evaluating 10 bulk mailer software, MailerLite stands out as our overall top pick — it scored highest across our combined criteria of features, ease of use, and value, which is why it sits at #1 in the rankings above.
Use the comparison table and detailed reviews above to validate the fit against your own requirements before committing to a tool.
How to Choose the Right Bulk Mailer Software
Bulk mailer software helps marketing and operations teams dispatch high-volume email with measurable delivery outcomes, then route those outcomes into automation workflows. This guide covers Mailjet, Mailgun, MailerLite, Mailchimp, and eight other commonly used platforms.
The comparison prioritizes integration depth, automation and API surface, and admin or governance controls that affect deliverability and operational risk. Those differences show up in webhook event callbacks, bounce processing, queue pacing, and how list segmentation and tagging rules are applied at send time.
Bulk Mailer Software for controlled high-volume email delivery and automation
Bulk mailer software is an email dispatch and lifecycle messaging system that sends campaign and triggered messages in bulk while exposing delivery signals for operations teams. Core capabilities include API access for bulk sends, event webhooks for delivery and bounce outcomes, and mechanisms for suppression and unsubscribe handling.
Some tools like Mailjet center on API-first sending with delivery tracking webhooks that map outcomes into external automation. Others like Mailgun pair API and SMTP relay support with event webhooks and bounce processing so teams can build a complete feedback loop without manual log parsing.
Bulk mailer evaluation criteria that affect deliverability and operational control
Delivery outcomes only become actionable when the platform emits event webhooks that include enough context to reconcile sends with internal campaign records. That same event surface determines whether teams can automate bounce handling, suppression updates, and follow-up messaging without manual log parsing.
Event webhooks for delivery, bounce, and complaint outcomes
Mailjet leads with webhook callbacks that map delivery outcomes into external automation workflows for campaign operations. Mailgun adds event webhooks paired with bounce processing for granular delivery, bounce, and complaint signals.
API and SMTP relay support for high-volume dispatch workflows
Mailjet supports API-first bulk sending and also includes SMTP relay support for MTA integrations and existing messaging pipelines. Mailgun pairs an API with SMTP relay support for high-volume sending workflows.
Queue pacing and send control for bursty traffic
MailerQ focuses on queued sending to control pacing for high-volume bursts. Mailjet and Mailgun both support high-volume workflows but emphasize API-driven dispatch and event outcomes rather than queue-centric pacing.
Bounce processing and end-to-end feedback loop completeness
Mailgun pairs event webhooks with bounce processing so teams can complete a delivery feedback loop without external log parsing. Mailjet provides delivery tracking webhooks, while MailerQ supports event-level tracking and suppression handling that can incorporate bounce outcomes.
Automation surface depth for event-driven and multi-step journeys
Klaviyo uses an event-triggered flow builder that starts journeys from granular customer events and properties. Mailchimp and Moosend also support journey or automation triggers, but Mailjet and Mailgun lean toward API-led automation that can be orchestrated externally.
List segmentation and tagging rules applied at send time
AWeber uses tag-based segmentation that supports practical audience splits and simple segmentation workflows. MailerLite provides segmentation and tags tied to lifecycle messaging structure with visual automation branching.
How to choose Bulk Mailer Software based on integration depth and governance needs
Teams with engineering resources usually need an automation surface that can ingest event webhooks and push updates back through APIs without rewriting workflows manually. Teams without deep MTA ownership often prioritize visual journey builders and tagging behavior that keeps campaign execution within marketer-controlled interfaces.
Choose the execution model: API-led dispatch or marketer-led campaigns
If bulk send pipelines are driven by code and must reconcile outcomes into internal systems, Mailjet and Mailgun fit best because both emphasize API-driven sending plus webhook event callbacks. If campaign teams need primarily visual construction, Mailchimp, MailerLite, Constant Contact, and Campaign Monitor keep execution centered on their builders.
Map the platform event surface into automation without log scraping
If operations requires delivery, bounce, and complaint signals to land directly into external workflows, prioritize Mailgun for its bounce processing plus event webhooks and also consider Mailjet for webhook delivery tracking. If a third-party system must reconcile send outcomes to internal campaign IDs, evaluate MailerQ and its delivery webhooks with event-level tracking.
Pick the sending control mechanism for burst traffic and throughput constraints
If traffic arrives in bursts and requires pacing control during queued sending, choose MailerQ and its queue-focused approach. If throughput is handled through API dispatch and external orchestration, Mailjet and Mailgun support that model through their API and event-driven outcomes.
Validate governance fit for senders, templates, and preference handling
If governance must cover templates, sender identities, and preferences with strong operational discipline, Mailjet explicitly requires discipline to manage senders, templates, and preferences. If governance relies more on structured segmentation inside the UI, AWeber and MailerLite emphasize tagging and visual journeys, but advanced admin governance is thinner in MailerLite than in more enterprise-oriented setups.
Decide whether journeys must branch on behavioral events or list status
If journeys must start from granular customer events and profile properties rather than list membership, evaluate Klaviyo because its flow builder uses customer events and properties. If the core requirement is branching journeys based on clicks and page actions inside a visual builder, evaluate MailerLite for event and action based branching.
Who Bulk Mailer Software buyers should match to specific product behavior
Bulk mailer software buyers should select based on whether delivery outcomes must feed external automation and whether governance must sit inside the mailer admin surface. Teams also need to match the platform’s automation style to how segmentation and tagging are maintained before each send.
Email marketing teams that run API-driven campaign dispatch
Mailjet and Mailgun align with teams that want API-first sending with webhook delivery tracking, including bounce and complaint signals in Mailgun.
Operations teams reconciling sends to internal campaign records
MailerQ and Mailjet both provide webhook delivery events, and MailerQ emphasizes event-level tracking so external systems can reconcile outcomes to internal campaign data.
Marketing teams that need visual automation journeys with branching
MailerLite and Campaign Monitor support visual journey building with event-triggered workflows, with MailerLite adding branching on subscriber events like clicks and page actions.
Teams that rely on tag-first segmentation and fast newsletter creation
AWeber supports tag-based segmentation and a visual email editor that speeds newsletter and sequence creation with less technical integration work.
Lifecycle teams that want guided workflows combining campaign creation and automation
Constant Contact bundles guided automation with newsletter and lifecycle workflows in the same experience and supports contact tagging and segmentation without heavy engineering.
Common failure modes when adopting Bulk Mailer Software
Many bulk mailer failures come from choosing a platform whose event outputs do not map cleanly to how send outcomes must be logged, reconciled, and acted on. Others come from underestimating how much configuration discipline is required to run MTA or domain authentication correctly and keep templates and preferences consistent across senders.
Building automation that depends on UI clicks instead of event webhooks
Mailjet and Mailgun expose webhook callbacks for delivery outcomes, so external automation should consume those events rather than scraping partial UI signals.
Assuming advanced governance exists without operational process
Mailjet’s campaign authoring UX is less centered on marketer workflows than API-led sending, and its operational governance needs discipline to manage senders, templates, and preferences.
Skipping queue and pacing controls during burst sending
MailerQ emphasizes queued sending for pacing control in high-volume bursts, so teams with burst traffic should not treat sending as an unthrottled API loop.
Overloading automation logic into the marketing builder without external orchestration
Mailgun can require external orchestration for complex journeys beyond the marketing builder, so workflows with multi-system state should plan for orchestration outside the mailer.
Treating automation branching as “set once” when events and properties evolve
Klaviyo requires governance to keep event naming and profile properties consistent, so changing event schemas without updates breaks flow logic.
How We Selected and Ranked These Tools
We evaluated each bulk mailer tool on feature coverage that affects deliverability outcomes and automation wiring, including webhook delivery tracking, bounce handling, and integration options. We then weighted ease of use alongside value because operational speed matters for teams that must configure domains, templates, and message workflows before running high-volume sends.
Features accounted for 40 percent of each score, while ease and value each contributed 30 percent. Mailjet ranked highest because its API-first bulk sending combined with webhook event callbacks for delivery tracking provides a tight path from send actions to external automation workflows.
Frequently Asked Questions About Bulk Mailer Software
How do Mailgun and Mailjet differ when teams need API-driven bulk dispatch with event tracking?
Which bulk mailer supports webhook delivery events that map cleanly into external automation and reporting systems?
How does Klaviyo handle list building and segmentation when automation must start from granular customer events?
When do AWeber and MailerLite become a better fit than API-first providers like Mailgun for campaign teams?
What breaks operationally when event webhooks and bounce processing are not connected to list governance?
How do Constant Contact and Campaign Monitor differ in admin control depth for marketing teams with multiple roles?
Which tool offers subscriber-activity-driven automations that update contact tags and placement across lists?
How do teams move data models and contact records when switching from a list-based system to an API-first bulk sender?
Where does security and authentication handling differ between Constant Contact and Campaign Monitor?
Tools reviewed
Primary sources checked during evaluation.
Referenced in the comparison table and product reviews above.
Funding and competing interests
This study was co-funded by several of the vendors assessed in it. No single vendor funded it. Funders could propose the market studied.
They had no role in selecting vendors, setting or weighting criteria, analysing data or drawing conclusions, and they received the same factual-accuracy check as every other vendor assessed.
Market definition, inclusion rules and criteria weights were fixed by an editor before research began and did not change afterwards. Editorial process →
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