Alternatives / Sendy
Postgun vs Sendy: a free Sendy alternative for Mailgun
Sendy is a self-hosted newsletter app you install on your own PHP server, and it sends through Amazon SES. Postgun is a hosted web app that sends through your own Mailgun account, so there is nothing to install and no SES account to set up.
Feature comparison
| Feature | Postgun | Sendy |
|---|---|---|
| Price | Free | One-time paid licence, plus your own server |
| Sending provider | Your Mailgun account (US or EU) | Amazon SES |
| Hosting | Hosted, nothing to install | Self-hosted on your PHP/MySQL server |
| A different file per recipient | Yes, matched by filename pattern | Not built in |
| List import | CSV, Excel (.xlsx), text | CSV |
| Merge tags from any column | Yes | Custom fields |
| Bounces and complaints | Synced from Mailgun before every send | Handled via SES notifications |
| Sender address rotation | Yes, every 100 recipients | No |
Last reviewed October 2026. Check Sendy's own site for current pricing and features.
Choose Sendy if
- You already run Amazon SES and want the lowest per-email cost at very high volume.
- You want to host everything on your own server.
- You need subscriber sign-up forms and autoresponders.
Choose Postgun if
- Your domain is already set up in Mailgun.
- You don't want to install or maintain a server.
- Each recipient needs their own attachment, such as a certificate, invoice or ticket.