Overage / Email APIs
Email APIs pricing comparison
18 services, one row each: what it costs, the tightest limit you will hit, and when it last changed. Sorted by price per normalized unit; click a column header to re-sort.
| Amazon SES | yes | $105 / moPro | $0.10/ 1,000 emails | unlisted | 2026-10-24 | none |
| Customer.io | none listed | $100 / moEssentials | $0.12/ 1,000 emails | unlisted | 2026-10-24 | none |
| Bird (SparkPost) | 1,000 emails sent / mo | $15 / moStartup (prepaid deposit) | $0.35/ 1,000 emails | 50 emails sent / day | 2026-10-24 | none |
| Cloudflare Email Service | no base feepay as you go | usage only | $0.35/ 1,000 emails | unlisted | 2026-10-24 | none |
| Mailtrap | 4,000 emails sent / mo | $15 / moBasic | $0.55/ 1,000 emails | 150 emails sent / day | 2026-10-23 | none |
| SMTP2GO | 1,000 emails sent / mo | $15 / moStarter | $0.85/ 1,000 emails | unlisted | 2026-10-23 | none |
| Resend | 3,000 emails sent / mo | $20 / moPro | $0.90/ 1,000 emails | 100 emails sent / day | 2026-10-23 | none |
| Plunk | 1,000 emails sent / mo | unlisted | $1/ 1,000 emails | unlisted | 2026-10-24 | none |
| Mailgun | 1 custom domains / cap | $15 / moBasic | $1.10/ 1,000 emails | 100 emails sent / day | 2026-10-23 | none |
| Postmark | 100 emails sent / mo | $15 / moBasic | $1.20/ 1,000 emails | unlisted | 2026-10-23 | none |
| MailerSend | 500 emails sent / mo | $7 / moHobby | $1.30/ 1,000 emails | 100 api requests / day | 2026-10-23 | none |
| Courier | 10,000 messages sent (any channel) / mo | unlisted | $5/ 1,000 messages | unlisted | 2026-10-23 | none |
| Knock | 10,000 messages sent (any channel) / mo | $250 / moStarter | $5/ 1,000 messages | unlisted | 2026-10-24 | none |
| Elastic Email | 3,000 emails sent / mo | $19 / moStarter | unlisted | unlisted | 2026-10-23 | none |
| Loops | 4,000 emails sent / mo | $49 / moGrowth | unlisted | 10 emails sent / second | 2026-10-23 | none |
| MailerLite | 2,500 emails sent / mo | $12 / moComfort | unlisted | 120 api requests / minute | 2026-10-24 | none |
| Mailjet | 6,000 emails sent / mo | $9 / moStarter | unlisted | 200 emails sent / day | 2026-10-23 | none |
| Twilio SendGrid | yes | $19.95 / moEssentials | unlisted | 100 emails sent / day | 2026-10-23 | none |
Plan services: the lowest overage rate on any tier at the normalized unit shown. Services with no listed rate show "unlisted" and sort last. All categories.
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Every pair in this category has a page, for example Amazon SES vs Customer.io. All comparisons.