Convert vs Postmark
Side-by-side plans, pricing, and feature gates for Convert and Postmark, verified . Convert is primarily a/b testing; 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.
Convert
- Growth$299/mo
- Pro
Most popular: $420/mo billed yearly
$420/mo - EnterpriseCustom
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 Growth (Convert) against Basic (Postmark). Both are the lowest-priced non-free, non-custom plan on each side.
| Limit | Convert | Postmark |
|---|---|---|
| Emails / month | · | 10,000 |
When Convert wins
- Marketing and CRO teams running 5+ tests per month with budgets to match
- Companies scaling out of free Optimize or VWO Free tier deprecations
- Mid-market e-commerce running structured experimentation programs
Where Convert is the wrong fit
- Small teams that can use PostHog feature flags and experiments for free
- One-test-a-quarter buyers where cost-per-test is too high
- Enterprises with Optimizely contracts where switching incentive is weak
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 Convert cheaper than Postmark?
- At the entry tier, Postmark starts at Free versus Convert at $299/mo. Postmark is cheaper at the entry. Pricing scales differently above that, so check the full plan grid.
- Does Convert or Postmark have a free plan?
- Only Postmark has a permanent free plan. Convert only offers a free trial.
- Are Convert and Postmark in the same category?
- No. Convert is primarily a a/b testing tool; Postmark is primarily a transactional email tool. They overlap on use case but sit in different primary categories, so the comparison is between adjacent tools rather than direct competitors.
- Which has more plans, Convert or Postmark?
- Postmark ships 5 plans; Convert ships 3. Postmark's longer ladder gives more granular upgrade steps, which can mean smoother price escalation as your team scales.
- Where can I see alternatives to Convert or Postmark?
- Each tool has a dedicated alternatives page on TierGauge with ranked options and verified pricing: /alternatives/convert for Convert and /alternatives/postmark for Postmark. Alternatives are derived from each tool's editor-flagged competitors plus same-category tools we track.
Convert: https://www.convert.com/pricing/ · Postmark: https://postmarkapp.com/pricing
Last verified . Pricing changes between refreshes; confirm at the vendor before purchasing.