Email tutorials
Hosting email on your server: a full mail server, webmail, deliverability, SPF/DKIM/DMARC, catch-all, blacklist checks, SMTP relay and spam filtering.
How to filter spam with Rspamd
Rspamd is a modern, fast spam filter. Here is how to use it to keep your inbox clean.
Updated 7/20/2026EmailHow to secure a mail server
A misconfigured mail server becomes a spam source. Here are the essential security rules.
Updated 7/20/2026EmailHow to use an SMTP relay for reliable delivery
An SMTP relay sends your emails through a service with good reputation, ideal for apps without their own mail server.
Updated 7/20/2026EmailHow to set up catch-all and email forwarding
Catch any address on your domain and forward messages to another mailbox.
Updated 7/20/2026EmailHow to check if your IP is on an email blacklist
If your emails are rejected, your IP might be on a blocklist. Here is how to check and what to do.
Updated 7/20/2026EmailHow to send email from your app over SMTP
Configure your app to send transactional emails (confirmations, password resets) over SMTP.
Updated 7/20/2026EmailHow to test email deliverability (avoid the spam folder)
Check whether your emails reach the inbox and what spam score they have, with free tools.
Updated 7/20/2026EmailHow to install Postfix and Dovecot for email
Build a mail server by hand with Postfix (sending) and Dovecot (receiving), for full control.
Updated 7/20/2026EmailHow to install a full mail server with Mailcow
Mailcow gives you a complete mail server (SMTP, IMAP, webmail, anti-spam) in Docker containers, ready in minutes.
Updated 7/20/2026EmailHow to install webmail with Roundcube
Read your email from the browser with Roundcube, a clean webmail interface for your mail server.
Updated 7/20/2026EmailShould you run your own mail server?
The pros, cons and what you need to know before hosting email on your own server.
Updated 7/20/2026