Plunk vs useSend
Plunk and useSend are both email sending and templating software. Plunk is open source under AGPL-3.0, with 5.6k GitHub stars. UseSend is open source under AGPL-3.0, with 4.8k GitHub stars.
Which to pick
- Pick Plunk when
- You want one open-source tool for both product emails and newsletters on AWS SES.
- Pick useSend when
- You want Resend or Postmark convenience at SES prices, hosted or self-hosted.
Side by side
An email platform for transactional email, marketing campaigns and event-triggered automations, sending through Amazon SES.
An email platform for transactional and marketing email that sends through Amazon SES, with an API, SMTP, dashboards and contact lists.
Still pre-1.0, AGPL licensed, and tied to AWS SES.
Depends on an AWS SES account and its sending limits, and the project is young under AGPL.
Usable (both)
Self-hosted server and cloud service (both)
TypeScript, PostgreSQL, Redis and Amazon SES
TypeScript, Next.js, PostgreSQL and Amazon SES
Open source, AGPL-3.0 (network copyleft) (both)
Use inside your business is unrestricted. If you change it and let customers use it over the internet, you must publish your changes. (both)
5.6k GitHub stars
4.8k GitHub stars
Established: started 2 years ago, latest release v0.18.0.
Established: started 2 years ago, latest release v1.10.0.
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Both sides were judged on 2026-11-03 from each project's README and GitHub data. License, age and popularity lines are worked out directly.