Mailgun still gives 100 emails/day free, but recent price increases lead many teams to compare. For Next.js apps, Resend offers a larger 3,000/mo free tier with type-safe sending; Postmark wins on deliverability; Amazon SES is cheapest at scale; and Brevo's 300/day is the most generous always-free option.
Pick the priority that matters most for your project and we'll point you to the provider that wins on it.
A 3,000/mo free tier, a type-safe SDK and first-class React Email templates make Resend the fastest migration for most JavaScript stacks.
Free tier, entry price, dedicated-IP cost and deliverability — pulled from each vendor's own pricing page. Sort any column; star a provider to watch it.
| Provider | Free tier | Entry paid | Dedicated IP | Deliver. | Best for | |
|---|---|---|---|---|---|---|
B Brevo www.brevo.com | 300 / day ~9,000 / mo | $9/mo plan-dependent | Higher / enterprise tiers | Most generous no-expiry free tier | ||
T Mailtrap mailtrap.io | 4,000 / mo 150 / day | $15/mo 10,000 / mo | Higher tiers | Unifies testing and production sending | ||
R ResendTop pick resend.com | 3,000 / mo 100 / day | $20/mo 50,000 / mo | $30/mo (Scale) | Best-in-class DX for Next.js | ||
P Postmark postmarkapp.com | 100 / mo no expiry | $15/mo 10,000 / mo | From $50/mo (requires 300,000+/mo) | Industry-leading deliverability | ||
S SendGrid (Twilio) sendgrid.com | Trial only 60-day, 100/day | $19.95/mo 50,000 / mo | Included on Pro and above | Mature breadth, but no free tier | ||
a Amazon SES aws.amazon.com/ses | 3,000 / mo 12 months only | usage usage-based | $24.95/mo (Standard) | Lowest cost once you scale |
Deliverability is StackPulse's editorial estimate, not a measured score. Pricing and free-tier figures are read from each vendor's own pricing page.
What you actually pay on Mailgun today, for context. Source: https://www.mailgun.com/pricing/.
Mailgun remains a capable, developer-oriented sender with flexible routing and inbound processing, and its 100 emails/day free tier is enough for early testing. The reason teams put it up for comparison in 2026 is cost creep: paid plans now start at $15/mo for 10,000 emails on Basic and climb to $90/mo for 100,000 on Scale, and the free tier keeps only one day of logs, which is thin for debugging delivery issues.
For a JavaScript or Next.js codebase, Resend is the most comfortable switch. You keep a free tier (3,000/mo versus Mailgun's ~3,000/mo by day cap) but gain a type-safe SDK and React Email templates, so the migration is mostly swapping the send call. If your priority is inbox placement for receipts and account emails, Postmark's transactional stream and deliverability reputation justify its smaller free allowance.
At higher volume, Amazon SES undercuts Mailgun substantially at $0.10 per 1,000 emails, in exchange for AWS setup overhead and self-managed bounce handling. If you would rather not pay at all for a while, Brevo's 300 emails/day (~9,000/mo) is the most generous no-expiry free tier in this set, and Mailtrap's 4,000/mo free tier pairs sending with built-in testing — useful while you validate a migration before cutting over production traffic.
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