Best MailSlurp Alternative — MailCatch vs MailSlurp
MailSlurp is a developer email API with generous free tier but steep jump to paid plans and usage-based pricing.
MailCatch
Free: 50 inboxes/month
From: $10/mo
MailSlurp
Free: 500 inbound emails/month, 50 inboxes, no attachments
From: $49.99/mo (Pro)
Feature Comparison
| Feature | MailCatch | MailSlurp |
|---|---|---|
| Free tier | 50 inboxes/month | 500 emails/month, 50 inboxes |
| Cheapest paid plan | $10/mo | $49.99/mo |
| Free tier attachments | Yes | No |
| API-first design | Yes | Yes |
| Auto OTP extraction | Yes | No |
| Long polling (/wait) | Yes | Yes (webhooks) |
| Custom domains | No | Yes (paid) |
| Phone/SMS numbers | No | Yes (add-on) |
| Pricing model | Flat monthly | Usage-based with overages |
Why choose MailCatch over MailSlurp
- 5x cheaper paid plan ($10 vs $49.99)
- Simple flat pricing — no surprise overage charges
- Auto OTP extraction built-in
- Attachments included in free tier
Where MailSlurp wins
- Smaller free email volume (50 inboxes vs 500 emails)
- No custom domain support
Frequently Asked Questions
Is MailCatch cheaper than MailSlurp?
Yes, significantly. MailCatch paid plans start at $10/mo with flat pricing. MailSlurp's cheapest paid plan is $49.99/mo with usage-based billing that can lead to surprise charges.
What's the main difference between MailCatch and MailSlurp?
MailCatch focuses on simplicity and test automation with flat pricing and built-in OTP extraction. MailSlurp offers more advanced features like custom domains and phone numbers, but at a higher cost.
Does MailCatch support custom domains like MailSlurp?
No. MailCatch provides @mcatch.dev addresses for testing. If you need emails on your own domain, MailSlurp offers this on paid plans.
Which is better for CI/CD email testing?
MailCatch is more suited for CI/CD with its /wait endpoint (long polling) that eliminates flaky sleep() calls, auto OTP extraction, and simple flat pricing.
Ready to try MailCatch?
Start with 50 free inboxes per month. No credit card required.
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Pricing and features as of September 2026. Information sourced from public pricing pages. Visit MailSlurp for current pricing. All trademarks belong to their respective owners.