Stalwart: an all-in-one mail server on a VPS
What Stalwart's single Rust binary replaces in a Postfix and Dovecot stack, what it cannot fix, and when a mailcow install is still the better call.
Filtering by topic #email · clear
Send mail from your self-hosted apps
Send mail from self hosted apps without running a mail server. One SMTP relay at host level, SPF, DKIM and DMARC, and a fix for blocked port 25.
Self-host a disposable email inbox on a VPS
Catch every test email on a throwaway domain with Mailpit, read it in a web UI, and stop your staging app from ever mailing a real customer again.
MCP email server: give your agent an inbox
Run an MCP email server on your VPS so Claude can triage your inbox. App password scoping, sender allowlists, draft-only replies, and the injection risk.
Is self-hosting email still worth it in 2026?
Receiving mail on your own VPS is easy. Getting it delivered to Gmail is the hard part. What deliverability really demands, and when to relay instead.
Moving DMARC from p=none to p=reject
Your DMARC record has said p=none for two years. Read the reports, fix alignment for every sender, then step to quarantine and reject without losing mail.
Stop subscription bombing on signup forms
An attacker submits a victim's address to hundreds of signup forms at once. Confirmed opt in and rate limits stop your server sending one of them.
Mailcow on a VPS: self-host email Gmail accepts
Test outbound port 25 before installing mailcow: a block strands mail in the queue until it bounces. Then set DNS that stops Gmail's 550 5.7.25 PTR rejection.
What a VPS abuse complaint means
Abuse mail about your VPS IP follows a fixed pipeline. Who reports, how the notice reaches you, what each category means, and how to answer in time.
Reverse DNS (PTR) on a VPS: Set It and Check It
Reverse DNS maps your VPS IP back to a name. Learn who sets the PTR record and how to check it with dig. Mail servers distrust an IP without a matching one.
Listmonk: self-host your newsletter on a VPS
Install Listmonk on Ubuntu 24.04 with Postgres, config.toml, a systemd unit and TLS, then connect SMTP and understand what deliverability really costs.