Quick answer
EmailJS - EmailJS Free allows 200 requests a month. Postmark's free Developer plan allows 100 emails a month and never expires. Both are for light testing, and neither lets you go over.
How the free tiers compare
EmailJS Free includes 200 monthly requests, 2 templates, requests up to 50Kb and 7 days of history. Postmark's Developer plan includes 100 emails a month, and the free trial needs no credit card. The plan never expires, and overages are not allowed. Postmark focuses on delivery speed. EmailJS focuses on sending from client-side code.
EmailJS vs Postmark free tier, side by side
| EmailJSFTV 44 | PostmarkFTV 50 | |
|---|---|---|
| Monthly volume | 200 requests | 100 emails |
| Free plan limits | 2 templates, requests up to 50Kb | No overages allowed |
| Email history | 7 days on Free | 45-day data retention on paid plans |
| First paid plan | Personal - $9/mo, 2,000 requests | Basic - $15/mo, 10,000 emails |
| Extra email cost | Next plan up | $1.80 per 1,000 on Basic |
After you outgrow the free tier
EmailJS Personal costs $9 a month with 2,000 requests. Professional costs $15 a month with 5,000 requests. Postmark Basic costs $15 a month with 10,000 emails and 5 custom sending domains. Extra emails cost $1.80 per 1,000 on Basic, $1.30 on Pro and $1.20 on Platform. Pro costs $16.50 a month and adds inbound email processing.
Cost at real usage
| Usage | EmailJS | Postmark |
|---|---|---|
| Send 5,000 emails a month | $15/mo for Professional | $15/mo for Basic, which includes 10,000 emails |
Estimates, not quotes. Usage-based rates change - verify with the vendor's pricing page before committing.
When to pick each one
Pick EmailJS when…
- You want to send from browser code without a server.
- You need up to 200 requests a month.
- You want a dashboard for templates.
Pick Postmark when…
- You want to test a real server-side integration.
- You care about delivery rates and speed.
- You expect to move to a paid plan with clear per-email pricing.
Bottom line
Pick EmailJS for a front-end contact form. Pick Postmark when you want server-side sending that scales per 1,000 emails.
Read the full listings: EmailJS and Postmark. Scores use the FTV methodology at /ftv. Browse more head-to-heads on /compare, or see the top-ranked free tiers on /top.