Restic Mailer vs Tarsnap GUI
A side-by-side comparison of two self-hosted backup & recovery options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Restic Mailer | Tarsnap GUI |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Health score | 76 · Good | 7 · At risk |
| Category | Backup & Recovery | Backup & Recovery |
| License | MIT | BSD-2-Clause |
| Language | Shell | C++ |
| Setup difficulty | Easy | Easy |
| Min. RAM | 64 MB | 128 MB |
| Deployment | docker, bare-metal | binary, bare-metal |
| GitHub stars | ★ 663 | ★ 251 |
| First released | 2018 | 2016 |
| Replaces | Backblaze | Backblaze |
What are Restic Mailer and Tarsnap GUI?
Restic Mailer
A wrapper around restic that runs backups on schedule and emails detailed success or failure reports. It adds visibility to unattended restic deployments.
- Scheduled restic runs
- Email job reports
- systemd integration
- Unattended backups
Tarsnap GUI
Tarsnap GUI is a cross-platform graphical client for the Tarsnap secure online backup service, making encrypted deduplicated backups accessible without the command line. It manages archives, scheduling, and restores through a desktop interface.
- Tarsnap archive management
- Scheduling support
- Encrypted deduplicated backups
- Cross-platform UI
Restic Mailer vs Tarsnap GUI: key differences
Restic Mailer is written in Shell, while Tarsnap GUI is built with C++. Licensing differs — MIT for Restic Mailer versus BSD-2-Clause for Tarsnap GUI. Restic Mailer is the lighter option, starting around 64 MB of RAM against 128 MB for Tarsnap GUI. Tarsnap GUI is the more established project (first released 2016), while Restic Mailer arrived in 2018. Restic Mailer has the considerably larger community, at 663 GitHub stars versus 251. Restic Mailer lists first-class Docker deployment; Tarsnap GUI does not.
Why pick each one
Choose Restic Mailer if…
- Released under the MIT license
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- Written in Shell
Choose Tarsnap GUI if…
- Released under the BSD-2-Clause license
- Easy to set up — beginner-friendly
- Written in C++
- Tiny footprint — runs in 128 MB RAM
Watch out for
- Tarsnap service is paid
- Requires Tarsnap CLI
Frequently asked questions
Is Restic Mailer or Tarsnap GUI better?
Neither is universally better. Restic Mailer has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are Restic Mailer and Tarsnap GUI free and open-source?
Yes. Restic Mailer is licensed under MIT and Tarsnap GUI under BSD-2-Clause. Both can be self-hosted at no software cost.
Can I run Restic Mailer and Tarsnap GUI with Docker?
Restic Mailer: yes. Tarsnap GUI: check the project docs for container support.
Which is lighter on resources, Restic Mailer or Tarsnap GUI?
Restic Mailer has the smaller minimum footprint at 64 MB of RAM, compared to about 128 MB for Tarsnap GUI. Real-world usage depends on library size, user count, and enabled features.