head to head · open source
useSend vs Keila
useSend has 4,686 GitHub stars, 421 forks, 37 open issues and last shipped 10 days ago. Keila has 2,211 stars, 167 forks, 76 open issues and last shipped 2 days ago. useSend leads on adoption by 112% (4,686 vs 2,211 stars). useSend is written in TypeScript under AGPL-3.0; Keila is written in Elixir under AGPL-3.0. useSend has attracted 9% as many forks as stars, Keila 8%. Keila was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| useSend | Keila | |
|---|---|---|
| GitHub stars | ★ 4.7K | ★ 2.2K |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | TypeScript | Elixir |
| Last push | 2026-09-08 | 2026-09-16 |
| Forks | ⑂ 421 | ⑂ 167 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick useSend if
- You weight community size — 4.7K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick Keila if
- You want the Keila feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Elixir
- You evaluated both and Keila fits your workflow better
About useSend
useSend is open source sending infrastructure, positioned directly as an alternative to Resend, Sendgrid and Postmark, and written in TypeScript under the AGPL 3.0 license. It lives in the email and communication ecosystem, filed under Productivity & Utilities / Email & Communication. Like most email products on the market, it uses Amazon SES under the hood to transmit messages, and it wraps that delivery layer in an open dashboard for sending reliably and cheaply. The project's stated premise is simple: pay per email sent, rather than paying for contact storage. The repository carries 4676 stars, 421 forks and 3…
read the full useSend overview →
About Keila
Keila is an open source newsletter and email marketing tool written in Elixir and licensed under AGPL 3.0. It is presented as an open alternative to Mailchimp and Sendinblue, and it lives in the open source email marketing and newsletter ecosystem for people who want to manage campaigns and subscriber sign ups without relying only on a paid hosted service.
read the full Keila overview →
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Frequently asked questions
Is useSend or Keila more popular?
useSend has 4,686 GitHub stars and Keila has 2,211. useSend has the larger community by that measure.
Are useSend and Keila free?
Both are open source. useSend is licensed under AGPL-3.0 and Keila under AGPL-3.0. Neither carries a licence fee.
What is the difference between useSend and Keila?
useSend is written in TypeScript and Keila in Elixir. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, useSend or Keila?
Choose useSend if you want the larger community (4,686 stars) or its AGPL-3.0 licence terms. Choose Keila if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.