head to head · open source
Plunk vs Sendportal
Plunk has 5,573 GitHub stars, 429 forks, 61 open issues and last shipped 2 days ago. Sendportal has 2,188 stars, 475 forks, 52 open issues and last shipped 12 days ago. Plunk leads on adoption by 155% (5,573 vs 2,188 stars). Plunk is written in TypeScript under AGPL-3.0; Sendportal is written in PHP under MIT. Plunk has attracted 8% as many forks as stars, Sendportal 22%. Plunk 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.
← all 20902 open source comparisons
Side by side
| Plunk | Sendportal | |
|---|---|---|
| GitHub stars | ★ 5.6K | ★ 2.2K |
| License | AGPL-3.0 | MIT |
| Written in | TypeScript | PHP |
| Last push | 2026-11-01 | 2026-10-22 |
| Forks | ⑂ 429 | ⑂ 475 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Plunk if
- You weight community size — 5.6K 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 Sendportal if
- You want the Sendportal feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches PHP
- You evaluated both and Sendportal fits your workflow better
About Plunk
Plunk The Open Source Email Platform Introduction Transactional emails, marketing campaigns, and workflow automation — in one platform. Self hostable, $0.001 per email, no contact limits. An open source, self hosted alternative to tools SendGrid, Resend or Mailgun. Features Transactional Emails : Send emails straight from your API with template support and variable substitution SMTP : Use Plunk as an SMTP relay to send emails from any existing tool or framework Campaigns : Send newsletters and product updates to large audiences Workflows : Create advanced automations with triggers, delays, and conditional logic…
read the full Plunk overview →
About Sendportal
Modern open source self hosted email marketing. Website Documentation Introduction The core functionality of SendPortal is contained within the SendPortal Core package. If you would like to add SendPortal to an existing application that already handles user authentication, you only require SendPortal Core. Features SendPortal includes subscriber and list management, email campaigns, message tracking, reports and multiple workspaces/domains in a modern, flexible and scalable application. SendPortal integrates with Amazon SES, Postmark, Sendgrid, Mailgun and Mailjet. The SendPortal application acts as a wrapper…
read the full Sendportal overview →
More in Productivity & Utilities
Related comparisons
More Email & Communication projects
Compare either of these against the rest of the Email & Communication field.
Frequently asked questions
Is Plunk or Sendportal more popular?
Plunk has 5,573 GitHub stars and Sendportal has 2,188. Plunk has the larger community by that measure.
Are Plunk and Sendportal free?
Both are open source. Plunk is licensed under AGPL-3.0 and Sendportal under MIT. Neither carries a licence fee.
What is the difference between Plunk and Sendportal?
Plunk is written in TypeScript and Sendportal in PHP. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Plunk or Sendportal?
Choose Plunk if you want the larger community (5,573 stars) or its AGPL-3.0 licence terms. Choose Sendportal if its feature set, stack or MIT licence fits better. Both are self-hostable.