Best for
Best for teams that want email marketing with deep marketing automation and a built-in CRM, and that will grow into advanced segmentation and predictive sending.
- Small and mid-sized
- Enterprise
Email Marketing Comparison
ActiveCampaign vs. Postmark
At a glance
At a glance
Best for
Best for product and engineering teams whose transactional email has to arrive, and who want promotional sending kept on separate infrastructure.
- Freelancers
- Small and mid-sized
- Enterprise
Cataleo does not name a winner. Both statements come from the vendors themselves.
Full Comparison
| Criterion | ActiveCampaign | Postmark |
|---|---|---|
| Starting price | Not stated | Free tier; Basic from $15 / month All three paid plans start at 10,000 emails per month and differ mainly by overage rate: Basic $15 at $1.80 per 1,000 extra emails, Pro $16.50 at $1.30, Platform $18 at $1.20. |
| Free trial | 14-day free trial, no credit card required | Free tier: 100 emails per month, no overages permitted, never expires |
| API | Yes, an API with webhooks, plus more than 1,000 integrations | Yes, REST API and an SMTP service, with official libraries for TypeScript, Node.js, Python, Ruby, PHP, .NET and Java |
| Hosting | Cloud (SaaS) | Cloud (SaaS) |
| Campaign types | Yes, email campaigns with a drag-and-drop designer and more than 250 templates | Transactional and broadcast email on separate Message Streams, plus inbound email processing that delivers received mail to your application |
| Automation and journeys | Yes, marketing automation, 5 actions per automation on Starter and unlimited on Plus, Pro and Enterprise | No journey or automation builder. Sends are triggered by your own application over the API or SMTP, and delivery events are pushed back out through webhooks. |
| Segmentation and personalisation | Yes, segmentation from limited on Starter to advanced and premium on the higher plans, with predictive sending | No stored audiences or segment builder. Recipients and their personalisation values are supplied per request, while Postmark maintains bounce state and suppression lists. |
| Templates and editor | Yes, a drag-and-drop email designer for plain text and HTML with more than 250 pre-built templates | Reusable email templates with variable substitution, managed in the dashboard or over the Templates API; there is no drag-and-drop campaign designer |
| Deliverability and testing | Yes, a spam check across plans and predictive sending | Message Streams keep promotional sending on infrastructure separate from transactional mail. Message data is retained for 45 days, extendable to 365 days on Pro and Platform from $5 per month. Dedicated IPs start at $50 per month per IP and DMARC monitoring at $14 per month per domain. |
| Ecommerce and CRM data | Yes, contact profiles with custom fields, tags and lists, plus premium CRM integrations such as Salesforce on the higher plans | No built-in ecommerce or CRM data sync. Contact data stays in your own application, which supplies it with each send. |
| Integrations and API | Yes, an API with webhooks plus more than 1,000 integrations | Yes, REST API with separate server and account tokens over TLS, plus an SMTP service with IP allowlisting. Endpoints cover email, batch sending, templates, bounces, inbound, message streams and suppressions. Official libraries for TypeScript, Node.js, Python, Ruby, Rails, PHP, .NET and Java, plus a WordPress plugin; community libraries add Go, Elixir, Laravel and Scala. |
| AI features | stated Yes | No |
| Deployment | Cloud (SaaS), Browser-based | Cloud (SaaS), Browser-based |
| Support | more entries Email helpdesk, Chat, Community forum | Email helpdesk |
| Onboarding | more entries Documentation and knowledge base, Video tutorials, Guided onboarding, Live online demos and webinars | Documentation and knowledge base |
| Company size | Small and mid-sized, Enterprise | more entries Freelancers, Small and mid-sized, Enterprise |
| Integrations | Shopify, Salesforce, Zendesk, Wix, Facebook, Google Sheets, Google Ads, ChatGPT, Claude | Not stated |
Add a tool
Adds a column to the table, from the tools in this category.
Row where the values differ The small markers point at the lower number, the longer list or the stated feature. They describe the data, they are not a verdict.
The short version
Key Differences
- Free trial ActiveCampaign 14-day free trial, no credit card required Postmark Free tier: 100 emails per month, no overages permitted, never expires
- Company size ActiveCampaign Small and mid-sized, Enterprise Postmark Freelancers, Small and mid-sized, Enterprise
- Support ActiveCampaign Email helpdesk, Chat, Community forum Postmark Email helpdesk
- AI features ActiveCampaign Yes Postmark No
- API ActiveCampaign Yes, an API with webhooks, plus more than 1,000 integrations Postmark Yes, REST API and an SMTP service, with official libraries for TypeScript, Node.js, Python, Ruby, PHP, .NET and Java
Every line is one datapoint from the table above, picked automatically. Nothing here is written text.
The trade-offs
Strengths and Limitations
ActiveCampaign
Strengths
- Marketing automation with unlimited automation actions on Plus, Pro and Enterprise
- More than 1,000 integrations plus an API with webhooks
- Active Intelligence AI features across all plans
- Built-in CRM with contact profiles, custom fields, tags and lists
Limitations
- Starter caps automations at 5 actions each and offers only limited segmentation
- Prices scale with the number of contacts
Postmark
Strengths
- Message Streams keep promotional sending on infrastructure separate from transactional mail
- Standing free tier of 100 emails a month that never expires
- Official client libraries for eight languages plus a WordPress plugin
- Inbound email processing on the Pro and Platform plans
- Message data retention extendable from 45 days to 365 days on Pro and Platform
Limitations
- No automation, journey builder or stored audiences
- Inbound email is not included on the Free and Basic plans
- Dedicated IPs, extended retention and DMARC monitoring are priced as add-ons
- The free tier permits no overage, so sending stops at 100 emails
- All three paid plans start at the same 10,000 emails, so the choice is really about overage rate
Plans
Pricing
ActiveCampaign
- Starter Not stated Entry plan with the email designer, templates and up to 5 actions per automation. Scales with contacts.
- Plus Not stated Adds unlimited automation actions and standard segmentation. Scales with contacts.
- Pro Not stated Adds advanced segmentation and predictive sending. Scales with contacts.
- Enterprise Not stated Adds premium segmentation and premium integrations such as Salesforce and Microsoft Dynamics.
Postmark
- Free $0 100 emails per month with no overages permitted, and 45 days of data retention. Never expires.
- Basic $15 Per month from 10,000 emails, overage $1.80 per 1,000. 45 days of data retention, no inbound email.
- Pro $16.50 Per month from 10,000 emails, overage $1.30 per 1,000. Adds inbound email and data retention customisable to 365 days.
- Platform $18 Per month from 10,000 emails, overage $1.20 per 1,000. Adds unlimited custom domains and message streams.
What users say
Review Scores · opens after launch
ActiveCampaign
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
Postmark
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
Where this comes from
Where this comes from
ActiveCampaign https://www.activecampaign.com · checked against the official source on 2026-08-19
Postmark https://postmarkapp.com · checked against the official source on 2026-09-09
This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.