Mailtrap vs Postmark
Side-by-side plans, pricing, and feature gates for Mailtrap and Postmark, verified . Mailtrap is primarily deliverability; Postmark is primarily transactional email.
Plans side by side
Every published plan from each vendor, with the headline monthly anchor price. Some prices scale with subscriber count or seats; full detail lives on each tool's page.
Mailtrap
- Free
4,000 emails per month for hobby projects and early validation
Free - Basic
Entry paid Email API tier scaling from 10k to 100k emails per month
$15/mo - Business
Best value
$85/mo - Enterprise
1.5M+ emails per month with priority support and custom contracting
Custom
Postmark
- Free
100 emails per month, no credit card required
Free - Basic
Entry paid tier with 10,000 emails/month and 5 custom domains
$15/mo - Pro
10,000 emails/month with inbound processing and customizable retention
$16.50/mo - Platform
Unlimited domains and users with the lowest overage rate
$18/mo - High-Volume
Custom pricing for volumes above standard tiers
Custom
Limits at the entry paid tier
Compares Basic (Mailtrap) against Basic (Postmark). Both are the lowest-priced non-free, non-custom plan on each side.
| Limit | Mailtrap | Postmark |
|---|---|---|
| Emails / month | 100,000 emails (entry $15 covers 10k; scales to $30 at 100k) | 10,000 |
| Team seats | 3 | · |
When Mailtrap wins
- Dev teams that want one vendor for both email testing and production sending
- SaaS startups under 100k/month Email API volume who can ride the Basic tier ramp
- Teams that need a dedicated IP without paying for SendGrid Pro or higher
Where Mailtrap is the wrong fit
- Marketing-only teams (use Mailchimp or Kit)
- Buyers who want flat predictable per-tier pricing (Postmark is more predictable)
- Enterprises needing voice or SMS in the same platform (use Twilio or SendGrid)
When Postmark wins
- SaaS apps prioritizing receipt and notification deliverability
- Teams that need detailed inbound email parsing alongside outbound sends
- Companies that need 365-day data retention for compliance
Where Postmark is the wrong fit
- Hobby projects with bursty traffic (Mailgun's 100/day or Resend's 3,000/month are friendlier than the 100/month Free cap)
- Marketing teams (use Mailchimp or Kit)
- Buyers who want a single vendor for marketing and transactional email
Common questions
- Is Mailtrap cheaper than Postmark?
- Both Mailtrap and Postmark have free or custom entry pricing, so a direct entry-tier price comparison is not meaningful.
- Does Mailtrap or Postmark have a free plan?
- Both have free plans. Mailtrap: 4,000 emails per month for hobby projects and early validation. Postmark: 100 emails per month, no credit card required.
Mailtrap: https://mailtrap.io/pricing/ · Postmark: https://postmarkapp.com/pricing
Last verified . Pricing changes between refreshes; confirm at the vendor before purchasing.