1
Step 1Open the server Apps tab
Select your VPS, open the Apps tab, and start a new app deployment. Keep sensitive server details hidden before capturing or sharing screenshots.
Back to all templates
Poste.io
Infrastructure1024MB+ RAM
All-in-one mail server (SMTP, IMAP, POP3, webmail, admin UI) in a single container
infrastructureemailposteioopen-sourceself-hosteddocker
Deploy Poste.io in 3 Steps
1
Connect Your VPS
Add your server credentials to Server Compass
2
Select Poste.io
Choose from our template library
3
Deploy & Configure
Fill in settings and click Deploy
No Docker knowledge required
Step-by-step deployment guide
Deploy Poste.io on a VPS with Server Compass
Use the Poste.io template in Server Compass to deploy the all-in-one mail server admin and webmail interface on your VPS, then verify the HTTPS setup page in a browser.
About 6 minutesBrowser verified
2
Step 2Choose an app template
Click New App and choose the template deployment path so Server Compass can load the built-in catalog.
3
Step 3Search for Poste.io
Use the template picker search to find Poste.io in the Server Compass template catalog.
4
Step 4Select the Poste.io template
Choose the Poste.io template. Server Compass fills the single-container mail server, persistent data volume, hostname, timezone, and browser-accessible HTTPS admin port.
5
Step 5Review the Poste.io settings
Confirm the app name and compose service. In this run, the app was named poste-io-demo and used host port 4200.
6
Step 6Deploy Poste.io
Review the generated hostname and timezone values, confirm the HTTPS port is available, and click Deploy Now.
7
Step 7Watch the deployment progress
Keep the deployment modal open while Server Compass uploads the compose file, pulls the Poste.io image, starts the container, and verifies the stack.
8
Step 8Confirm Poste.io is running
After deployment finishes, return to the Apps tab and confirm the Poste.io app is marked Running with its application URL available.
9
Step 9Open Poste.io in the browser
Open the HTTPS setup URL in a browser. For direct IP testing, accept the self-signed certificate warning. The initial server configuration page confirms the Poste.io admin interface is reachable.
After Poste.io Opens
- Complete the initial server configuration and create the first admin account.
- Publish DNS records before using the server for real mail: A, MX, SPF, DKIM, and DMARC.
- Expose and firewall the required mail protocol ports before sending or receiving real mail.
- Replace the self-signed certificate with a trusted certificate before production use.
- Back up the posteio_data volume regularly because it stores mail, accounts, and TLS keys.
Verified Result
The Poste.io initial server configuration page loaded successfully in a browser.
Poste.io deployment questions
What does the Poste.io template deploy?
It deploys the Poste.io all-in-one mail server container with a persistent data volume and the admin/webmail HTTPS interface mapped to a host port.
Which port did the tutorial use?
The tutorial used host port 4200, which maps to the Poste.io HTTPS admin/webmail interface on container port 443.
Why does the guide stop at the initial setup page?
The tutorial verifies that the hosted admin interface is reachable. Real mail delivery depends on production DNS, certificate, firewall, and provider port-25 policy that should be configured for the final domain.
Should this become a blog post?
No. The deployment guide should live on the Poste.io template detail page and be linked from the reusable template deployment docs page.
After Deployment
After deploying Poste.io with Server Compass, complete these steps to finish setup
1
Visit http://YOUR_SERVER_IP:{{PORT}} and complete the setup wizard - create the admin account and the first domain
2
Generate DKIM keys in the admin UI under Server settings → DKIM and publish the resulting TXT record in DNS
3
Configure SPF and DMARC TXT records for the domain
4
Add the mail protocol ports (25/465/587/993/995) to the compose file and redeploy, then open them in your firewall
5
Send a test email and run it through https://www.mail-tester.com to verify deliverability
Need help? Check out our documentation for detailed guides.
Poste.io FAQ
Common questions about self-hosting Poste.io
How do I deploy Poste.io with Server Compass?
Simply download Server Compass, connect to your VPS, and select Poste.io from the templates list. Fill in the required configuration and click Deploy. The entire process takes under 3 minutes.
What are the system requirements for Poste.io?
Poste.io requires a minimum of 1024MB RAM. We recommend a VPS with at least 2048MB RAM for optimal performance. Any modern Linux server with Docker support will work.
Can I migrate my existing Poste.io data?
Yes! Server Compass provides volume mapping that allows you to import existing data. You can also use standard Poste.io backup and restore procedures.
How do I update Poste.io to the latest version?
Server Compass makes updates easy. Simply click the Update button in your deployment dashboard, and the latest Poste.io image will be pulled and deployed with zero downtime.
Is Poste.io free to self-host?
Poste.io is open-source software. You only pay for your VPS hosting (typically $5-20/month) and optionally Server Compass ($29 one-time). No subscription fees or per-seat pricing.
Ready to Self-Host Poste.io?
Download Server Compass and deploy Poste.io to your VPS in under 3 minutes. No Docker expertise required.
Download Server Compass