Self-Hosted Email Solutions Compared
Choose Mailcow for all-in-one convenience. Choose Docker-mailserver for lightweight modularity. Choose YunoHost if you want email alongside other services. Raw Postfix+Dovecot is for experts only.
Scoring Matrix
| Criteria | Mailcow | Docker-mailserver | Postfix + Dovecot | YunoHost |
|---|---|---|---|---|
| Ease of Setup | 4 | 3 | 1 | 5 |
| Webmail UI | 5 (SOGo) | 1 (none) | 2 (Roundcube) | 4 |
| Admin UI | 5 | 1 (CLI) | 1 (config files) | 5 |
| Resource Usage | 3 (heavy) | 5 (light) | 5 | 3 |
| Spam Filtering | 5 (Rspamd) | 4 (Rspamd) | 3 (SpamAssassin) | 4 |
| Active Development | 4 | 4 | 5 (mature) | 4 |
| Documentation | 4 | 4 | 2 | 4 |
| Multi-Domain | 5 | 4 | 4 | 3 |
| Overall | 35/40 | 26/40 | 21/40 | 32/40 |
What Is Self-Hosted Email?
Self-hosted email means running your own mail server rather than using Gmail, Outlook, or a commercial email provider. You control the server, the data, and the configuration.
Email is notoriously difficult to self-host correctly. Deliverability (getting emails into inbox rather than spam) requires proper SPF, DKIM, DMARC, reverse DNS, and reputation management. This comparison helps you choose the right stack.
Solution Breakdown
Mailcow — Best All-in-One
Mailcow is a Dockerized mail server suite with a beautiful admin UI, SOGo webmail, and integrated spam filtering. It's the easiest way to get a full-featured mail server running with minimal pain.
Pros
- Gorgeous admin UI — everything in one place
- SOGo webmail with calendar and contacts sync
- Rspamd for excellent spam filtering
- One docker-compose file to deploy
- Auto-configures DKIM, SPF, DMARC
- Active community and good documentation
Cons
- Heavy — needs 2+ GB RAM for comfortable use
- Docker dependency
- Some learning curve for advanced config
- Updates can be tricky
Quick Install
git clone https://github.com/Mailu/Mailu.git
cd Mailu
docker compose up -dDocker-mailserver — Best Modular
Docker-mailserver is a lean, Docker-based mail server without a webmail or admin UI. It handles MTA (Postfix), IMAP/POP (Dovecot), SPF/DKIM/DMARC, and spam filtering (Rspamd). You bring your own webmail (Roundcube, Rainloop) and admin tools.
Pros
- Very lightweight — runs on 512 MB RAM
- Docker-native and well-maintained
- Rspamd spam filtering included
- Modular — you choose your webmail
- Clear configuration via docker-compose env
- Better for learning how email works
Cons
- No webmail — you must set up Roundcube/Rainloop separately
- No admin UI — everything via CLI or config files
- More manual work than Mailcow
- You need to understand email infrastructure
Quick Install
git clone https://github.com/docker-mailserver/docker-mailserver.git
cd docker-mailserver
docker compose up -dPostfix + Dovecot — Raw Power
The classic approach: install Postfix (MTA) and Dovecot (IMAP/POP) directly on your server. Configure everything manually. This is what email servers were before containers, and it's still what runs most of the internet's email.
Pros
- Maximum flexibility
- Minimum overhead
- Well-understood, stable technology
- Deep integration with system
- Extensive documentation online
Cons
- Steep learning curve
- Manual configuration of everything
- No web UI — separate Roundcube needed
- Spam filtering requires separate SpamAssassin setup
- Easy to misconfigure security
- Time-intensive to set up correctly
Quick Install
sudo apt install postfix dovecot-core \
dovecot-imapd dovecot-pop3d \
spamassassin roundcubeYunoHost — Best for Beginners
YunoHost is a Debian-based server OS designed to make self-hosting accessible. Email is just one of many apps it manages. It's the best choice if you want email alongside Nextcloud, a wiki, a blog, or other services — all on one server.
Pros
- Easiest setup of any self-hosted email
- Web admin handles DNS, users, domains
- Auto-configures SPF/DKIM/DMARC
- All-in-one platform — email + files + apps
- SSO portal for all apps
- Excellent for non-technical users
Cons
- Multi-domain support is limited
- Tied to YunoHost ecosystem
- Heavier than standalone Docker-mailserver
- Less flexible for custom configurations
- If you break YunoHost, email breaks
Quick Install
curl https://install.yunohost.org | bashDeliverability: Getting Into Inbox
Self-hosted email has one major challenge: deliverability. Gmail, Outlook, and other major providers aggressively filter email from unknown servers. Here's what you need:
- SPF record — Authorizes which servers can send email for your domain
v=spf1 a mx -all - DKIM record — Cryptographic signature proving the email wasn't modified (Mailcow, Docker-mailserver, and YunoHost auto-generate this)
- DMARC record — Policy for how receivers should handle SPF/DKIM failures
v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com - Reverse DNS (PTR) — Your server's IP must resolve to your domain
- Warm up your IP — Start sending low volume, increase gradually
If you've sent spam from your IP in the past, or if your provider has a bad reputation, your emails will go to spam regardless of your configuration. Check your IP reputation at MXToolbox before setting up.