What is the difference between MailWizz and Acelle Mail?

Both are self-hosted multi-tenant ESP platforms with similar feature sets. MailWizz has more features, larger ecosystem, longer track record (founded 2013), and dated UI. Acelle Mail has cleaner UI, slightly fewer features, slightly higher performance ceiling per community reports, and smaller ecosystem. Both run on PHP with MySQL. Both cost similar amounts: MailWizz $59-$69 commercial license, Acelle Mail $45-$59 commercial license. The choice typically comes down to UI preference, ecosystem needs, and specific feature requirements.

Which has more features?

MailWizz has more features overall. Larger extension and theme ecosystem on CodeCanyon. More integrations with third-party tools. More mature campaign automation capabilities. More flexible delivery server configuration. Acelle Mail covers the core ESP feature set well but does not match MailWizz on extension depth.

Acelle Mail has cleaner, more modern UI design. MailWizz UI feels dated relative to current SaaS standards but is functional and familiar to users coming from older ESPs. For customer-facing reseller deployments where end-customer experience matters, Acelle UI is the more polished choice. For backend operator use where functionality trumps aesthetics, MailWizz works fine.

Which performs better at scale?

Community reports suggest Acelle Mail performs slightly faster than MailWizz at moderate scale (~100K-1M daily messages). Both face database performance challenges above 1M daily messages without tuning. MailWizz has more documented patterns for performance tuning due to larger user base. Above 5M daily messages, both platforms typically need database optimization, queue worker scaling, and operational attention regardless of which is chosen.

Which is better for multi-tenant ESP reselling?

Both support multi-tenant operation. MailWizz has more mature customer management features including billing integration, custom plans, and customer-side branding. Acelle Mail covers the core multi-tenant features but with fewer ESP-specific customer management capabilities. For dedicated ESP reseller businesses, MailWizz is typically the more complete choice. For simpler use cases or operators wanting cleaner UI, Acelle works well.

What about the open-source vs commercial distinction?

Both have commercial licenses. MailWizz at $59 single-domain or $399+ extended/multi-domain on CodeCanyon. Acelle Mail at $45-$59 on CodeCanyon plus open-source variant available. Neither is truly free open-source in the way Postal or Listmonk are. The license costs are similar enough that this is rarely the deciding factor; the underlying platform characteristics matter more.

Can I migrate from one to the other?

Migration is possible but operationally significant. Both store data in MySQL with different schemas, so direct database import is not possible. Migration requires exporting from source platform (lists, campaigns, templates, customers, suppression data) and importing to destination platform with mapping between schemas. Some data does not migrate cleanly (custom field definitions, automation workflows, theme customizations) and requires rebuilding. Plan for 1-2 weeks of migration work for established deployments.

Does ASH support both?

Yes. We offer managed MailWizz hosting and managed Acelle Mail hosting on dedicated infrastructure. Both deployments include the platform installation, database tuning, SMTP backend integration (Postal or PowerMTA), IP pool configuration, and ongoing operational support. The customer brings the license (or we coordinate license acquisition). Migration support between platforms is available for customers changing direction.

ESP platforms · Self-hosted · Multi-tenant · 2026

MailWizz vs Acelle Mail
the decision that shapes your whole ESP platform layer.

Both ship as PHP applications with MySQL backend. Both cost roughly the same in license fees. Both serve the same core market of self-hosted ESP operators. The differences are in feature depth, UI polish, ecosystem maturity, and performance characteristics that matter at scale.

Quick answer

MailWizz vs Acelle Mail is the platform layer comparison for self-hosted ESP operators. MailWizz (founded 2013, $59 commercial license, larger ecosystem) has more features and more mature customer management. Acelle Mail ($45-$59 commercial license, open-source variant available) has cleaner UI and slightly better performance per community reports. Both run on PHP with MySQL. Both support multi-tenant ESP reselling. The choice typically comes down to: feature depth needed (MailWizz wins), UI quality for end-customers (Acelle wins), ecosystem and extension availability (MailWizz wins), or performance at moderate scale (Acelle slight edge). For dedicated ESP reselling businesses, MailWizz is typically the more complete choice; for cleaner UI use cases or simpler operations, Acelle works well.

Key facts about MailWizz vs Acelle Mail

MailWizz founded: 2013 by Twisted Minds. Active development since. Commercial CodeCanyon listing. 13 years in production.
Acelle Mail founded: 2014 by Acelle. Active development since. CodeCanyon listing plus open-source repository. 12 years in production.
MailWizz license: $59 regular CodeCanyon license, $399+ extended license for multi-domain or SaaS use. Pricing per license.
Acelle Mail license: $45-$59 CodeCanyon license. Open-source variant available on GitHub.
Technology stack: Both PHP with MySQL/MariaDB. MailWizz uses Yii framework. Acelle Mail uses Laravel framework.
Multi-tenancy: Both support multi-tenant ESP operation. MailWizz with deeper customer management features, Acelle with cleaner customer experience.
SMTP backends: Both support Postal, PowerMTA, Amazon SES, SendGrid, Mailgun, Mandrill, custom SMTP. No platform-level limitation on backend choice.
Community size: MailWizz larger active forum and extension marketplace. Acelle smaller but active community.

The platform layer in the email infrastructure stack

Before comparing MailWizz and Acelle directly, understanding where the platform layer sits in the email infrastructure stack helps frame the comparison.

The typical self-hosted ESP architecture has four layers. The customer-facing platform layer (MailWizz or Acelle) handles list management, campaign creation, subscriber UI, billing integration, and reporting. The SMTP backend layer (PowerMTA, Postal, Postfix, or commercial SMTP services) handles actual message delivery to receivers. The database layer (MySQL/MariaDB) stores lists, campaigns, statistics. The infrastructure layer (servers, IPs, network) supports all of the above.

MailWizz and Acelle compete specifically at the platform layer. The same SMTP backend works underneath either platform. The same infrastructure supports either. The database layer differs slightly between the two (different schema, different optimization characteristics) but the underlying database engine is the same.

The platform layer is the most user-facing of the four. Customers interact with the platform UI when creating campaigns. End-recipients see emails composed in the platform. The platform's quality directly affects customer experience and operator efficiency. The SMTP backend matters for deliverability; the platform matters for usability.

The feature depth comparison

MailWizz feature strengths

Larger feature set across the board. Customer management with built-in billing through PayPal, Stripe, and other processors. Custom pricing plans configurable per-customer. Customer-side branding for reseller white-label use. Mature email template editor with extensive starter templates. Comprehensive campaign automation with autoresponders, drip campaigns, and behavioral triggers. Detailed analytics including geographic, device, and engagement breakdowns. Webhook system for integration with external tools. Extension ecosystem on CodeCanyon with hundreds of paid extensions covering specific use cases.

Acelle Mail feature strengths

Core ESP features covered well. Cleaner template editor UI than MailWizz. Built-in service plan management with PayPal and Stripe integration. Live upgrade manager for in-platform updates (MailWizz requires manual file replacement). Modern Laravel framework underneath produces cleaner codebase for customization. Open/click/bounce/complaint tracking with detailed status per send. RESTful API for integration.

Where MailWizz pulls ahead

Customer subscription billing with proration, plan changes, and complex pricing structures. Extension marketplace for specific use cases (better than building custom). Email inbox screens for monitoring specific feedback addresses. Sender ID rotation for delivery domain diversification. Granular delivery server configuration with quota and per-server rules. Multi-language support more developed. Older but more battle-tested customer management workflows.

Where Acelle pulls ahead

Modern UI that customers find more pleasant to use. Cleaner code structure for operators making modifications. Live upgrade flow reduces operational overhead. Smaller resource footprint at smaller scale. Some operators report slightly faster campaign processing at moderate scale.

The UI comparison in practical terms

The UI comparison matters for two distinct user groups: the operator (who uses the admin backend) and end-customers (who use the customer-facing UI).

Operator backend

MailWizz admin backend feels dated. Color scheme and typography are from the early 2010s UI design era. The information density is high; experienced operators appreciate this but newcomers find it overwhelming. The workflow is comprehensive but requires learning the system's conventions.

Acelle admin backend uses modern flat design with Bootstrap-style components. The visual hierarchy is clearer for newcomers. Information density is lower; some operators find this requires more clicks to access frequent operations. The workflow is cleaner for new users.

Customer-facing UI

The customer-facing UI is where reseller use cases differentiate most. MailWizz customer UI inherits the dated aesthetic of the admin backend. The functionality is comprehensive but the visual experience does not match modern SaaS expectations. Customers from Mailchimp or Beehiiv may find MailWizz visually unfamiliar.

Acelle customer UI matches modern SaaS aesthetic better. Customers transitioning from mainstream ESPs find Acelle visually familiar. The reduced training overhead for new customers matters for reseller use cases where customer onboarding friction affects conversion.

Mobile responsiveness

Both platforms are mobile-responsive but neither is mobile-optimized. The complex campaign creation workflows assume desktop use. Customers wanting to manage campaigns from mobile devices find both platforms cumbersome compared to mobile-native ESPs like Beehiiv.

Side-by-side feature comparison

Feature	MailWizz	Acelle Mail
License price (single)	$59 regular	$45-$59
License price (extended)	$399+ extended	$295+ extended
Open-source variant	None	Available (GitHub)
Framework	Yii (PHP)	Laravel (PHP)
Database	MySQL/MariaDB	MySQL/MariaDB
Founded	2013	2014
Multi-tenant	Native	Native
Customer management	Comprehensive	Core features
Billing integration	PayPal, Stripe, Braintree, +	PayPal, Stripe, Braintree, Paddle
Email template editor	Mature, many templates	Modern UI, fewer templates
Campaign automation	Comprehensive	Core autoresponders
API (REST)	Yes	Yes
Webhooks	Yes	Yes
List segmentation	Advanced	Standard
A/B testing	Built-in	Limited
SMTP backends	Postal, PMTA, SES, SG, MG, +	Postal, PMTA, SES, SG, MG, +
FBL processing	Webhook-based	Webhook-based
Bounce processing	Built-in	Built-in
Suppression management	Per-list and global	Per-list and global
Analytics depth	Detailed	Standard
Email inbox monitoring	Built-in	Limited
White-label customization	Extensive	Moderate
UI quality	Functional, dated	Modern, cleaner
Performance ceiling	~5M daily with tuning	~3M daily with tuning
Extension ecosystem	Large (CodeCanyon)	Smaller
Community size	Larger	Smaller but active
Documentation	Comprehensive	Good
Update mechanism	Manual file replacement	Live upgrade manager
Mobile responsive	Yes (functional)	Yes (better)

Performance characteristics at different scales

Small operations (under 100K daily messages)

Both platforms perform comfortably. Database load is minimal. Queue processing keeps up with sending. Resource requirements are modest: 2-4GB RAM, 2 CPU cores, SSD storage. Cost difference between platforms is negligible. UI preference and feature requirements drive the choice.

Mid-scale operations (100K-1M daily messages)

Both platforms work well with appropriate hardware. 4-8GB RAM, 4 CPU cores, NVMe storage. Database tuning becomes important: indexed queries, table optimization, query log review. Both platforms have similar performance characteristics at this scale. Some operators report Acelle slightly faster; community reports are not conclusive.

Larger operations (1M-5M daily messages)

Performance characteristics diverge. Both platforms require dedicated database servers, separate from the application servers. MailWizz has more documented performance tuning patterns due to larger user base. Acelle requires more custom optimization at this scale because the operator community is smaller and shared patterns less common.

Multi-worker queue processing becomes essential. Both platforms support this but the configuration patterns differ.

Very large operations (5M+ daily messages)

Both platforms are stretched at this scale. Operators report success up to 10M+ daily messages but require significant operational attention: database sharding considerations, queue worker scaling across multiple servers, log archival strategies, monitoring infrastructure. At this scale, custom platforms or hybrid architectures (platform-only with MTA underneath at PowerMTA scale) become more attractive.

Multi-tenant ESP reselling specifics

Customer management depth

MailWizz has more developed customer management. Customer plans with proration, plan changes, custom feature flags per customer, group-based pricing. The depth supports ESP reseller use cases directly.

Acelle covers customer management at a simpler level. Service plans, basic upgrade/downgrade, subscription management. Sufficient for straightforward reseller operations but requires customization for complex pricing.

White-label branding

Both platforms support white-label customer-facing UI. MailWizz with more customization options including custom domains per customer, custom email templates for system messages, custom branding throughout. Acelle covers the core white-label capabilities with less granular control.

Customer-side limits

Both platforms support per-customer sending quotas, list size limits, contact import limits. The enforcement mechanisms differ but the functional outcome is similar.

Customer support workflow

MailWizz has built-in customer support ticketing. Acelle requires external ticketing system integration. For dedicated reseller operations with significant customer support volume, MailWizz's built-in workflow reduces tooling complexity.

Integration with SMTP backends

The SMTP backend choice is independent of the platform choice. Both MailWizz and Acelle support the same range of backends.

Postal integration

Both platforms integrate with Postal via SMTP relay. Postal handles outbound delivery, the platform handles list management and campaign orchestration. The integration is well-documented for both platforms.

PowerMTA integration

Both platforms support PowerMTA as SMTP backend. PowerMTA handles the SMTP delivery, the platform handles everything else. Configuration involves SMTP relay setup with appropriate authentication. Both platforms have established patterns for PowerMTA integration.

Commercial SMTP services

Both platforms support SendGrid, Mailgun, Amazon SES, Mandrill, and similar commercial SMTP services. The integration is similar across platforms: API credentials in the delivery server configuration, sending domain verification, webhook configuration for events.

Multiple backends simultaneously

Both platforms support multiple SMTP backends configured simultaneously with routing rules. Different customers can use different backends. Different campaigns can route through different infrastructure. The routing flexibility supports complex deployment patterns.

The honest recommendation framework

Dedicated ESP reselling business → MailWizz

The customer management depth, ecosystem size, white-label customization, and built-in workflows support the reseller use case better. The dated UI is a real concern but typically not a dealbreaker for the operator audience.

Operator preferring modern UI → Acelle Mail

For operators where UI quality matters (own use or customer-facing where end customers come from mainstream ESPs), Acelle's cleaner UI is meaningful. The feature gap versus MailWizz is real but usually manageable.

Smaller-scale operator with cleaner code preference → Acelle Mail

Laravel framework underneath produces cleaner codebase for operators making customizations. For solo developers or small teams who plan platform-level modifications, Acelle is more pleasant to work with.

Operator needing specific extension → Check extension availability first

Some operators have specific feature requirements (specific payment processor integration, specific analytics integration, specific automation pattern). Check the extension marketplace for both platforms before committing. MailWizz's larger ecosystem often has extensions for specific needs that would require custom development on Acelle.

Open-source preference for organizational reasons → Acelle Mail open-source variant

Some organizations prefer open-source for licensing visibility. Acelle's open-source variant provides this; MailWizz does not have an open-source equivalent.

Greenfield deployment at higher scale → Evaluate both with realistic load testing

For new deployments planning for 1M+ daily messages, the performance characteristics matter more than UI or feature depth. Load test both with realistic data and traffic patterns before committing.

The migration consideration

For operators with existing deployments considering migration between platforms, the operational cost is meaningful.

What migrates cleanly

Subscriber lists (CSV export from source, CSV import to destination). Suppression lists (similar workflow). Basic campaign templates (HTML export, HTML import with minor adjustments). Customer base list (with manual mapping of plan equivalents).

What requires rebuilding

Custom field definitions (different schemas between platforms). Automation workflows (different builders). Theme customizations (platform-specific UI customization). Custom extensions or modifications. Webhook configurations. API integration patterns.

Typical migration timeline

Small deployment (under 10 customers): 1-2 weeks of focused work. Mid-size deployment (10-50 customers): 3-6 weeks with parallel operation during validation. Large deployment (50+ customers): 2-3 months with phased migration by customer cohort.

The customer notification consideration

Customers using the reseller's platform interact with the platform UI directly. Platform migration changes their experience. Communication during migration affects customer churn. Plan for explicit notification, training documentation for new platform, support availability during transition.

Operational support and the platform decision

Choosing a platform commits the operator to ongoing operational support against the platform's specific characteristics.

MailWizz operational considerations

Manual updates: each MailWizz update requires file replacement, database migration, and verification. Automation possible but not built-in. Older Yii framework conventions require specific PHP knowledge for customization. Larger codebase to understand for deep operations. Extension dependencies create update complexity (extensions may not be compatible with new MailWizz versions).

Acelle operational considerations

Live upgrade manager reduces update friction. Laravel framework conventions are more standard PHP practice. Smaller codebase is more approachable for operators making modifications. Fewer extensions means less dependency complexity but more custom development for specific needs.

Database operations

Both platforms have similar database operational characteristics at smaller scale. At higher scale, both require database tuning, query optimization, and potentially database sharding strategies. Operational expertise transfers between platforms with adjustments for schema differences.