How much RAM does Mailpit need?

Plan on 256 MB for typical use; add headroom if you expect many concurrent users.

Can I run other things on the same VPS?

Yes — size the plan so Mailpit plus your other workloads fit in RAM with room to spare.

Development

An email testing tool that catches outbound mail.

A fake SMTP server that traps, stores and displays mail during development, with a web UI.

Mailpit makes testing signup, reset and notification emails safe and inspectable without sending anything real.

1
Provision a VPS
Pick a Debian/Ubuntu template and get root SSH in about a minute.
2
Install the runtime
Install Single Go binary.
3
Deploy the application
Net what you need from the project’s official source and run it.
4
Put it behind TLS
Reverse-proxy with Nginx and issue a Let’s Encrypt certificate.
5
Add it to your backups
Include the data directory and database in your backup routine before you rely on it.

Give Mailpit its own database user with rights only on its own schema.
Reverse-proxy Mailpit and terminate TLS at the proxy so certificates are managed in one place.
Take a VPS snapshot before major upgrades so you can roll back cleanly.
Keep Mailpit patched — most self-hosting incidents are unpatched software.

How much RAM does Mailpit need?: Plan on 256 MB for typical use; add headroom if you expect many concurrent users.
What stack does Mailpit run on?: Single Go binary.
Can I run other things on the same VPS?: Yes — size the plan so Mailpit plus your other workloads fit in RAM with room to spare.

Looking for something else? Popular alternatives include MailHog, Mailcatcher, Mailtrap (hosted) — browse all app guides.