Self-Hosted SMTP
Build and manage your own email sending infrastructure with Mailcow, Postal, Stalwart, and more.
2026-04-01
DigitalOcean vs. Hetzner vs. Vultr vs. OVH for Email Servers
Compare VPS providers for self-hosted email — port 25 policies, IP reputation, pricing, and reverse DNS. Which provider is best for running a mail server?
2026-04-01
How Much Does It Cost to Run Your Own Email Server?
Complete cost breakdown for self-hosted email: VPS hosting, domain, software, time, and hidden expenses. Real numbers at every volume level from 10K to 1M+ emails/month.
2026-05-16
How to Install Your Own Email Server (Honest Edition)
Installing your own email server is technically straightforward and operationally hard. Here's what's involved with Postfix, Mailcow, and Mail-in-a-Box.
2026-04-01
iRedMail Setup Guide: Full-Featured Email Server
Deploy iRedMail — a free, open-source email server solution with Postfix, Dovecot, Roundcube, and anti-spam. Runs on most Linux distros with a scripted installer.
2026-04-01
KumoMTA Setup: High-Volume Self-Hosted Sending
Deploy KumoMTA for high-volume email sending (500K-10M+ emails/month). Installation, configuration, and tuning for maximum throughput on self-hosted infrastructure.
2026-04-01
Mail-in-a-Box Setup Guide: Email Server in 30 Minutes
Deploy Mail-in-a-Box — the simplest self-hosted email server. One script installs Postfix, Dovecot, roundcube, DNS, and Let's Encrypt on a fresh Ubuntu VPS.
2026-04-01
Mailcow DNS Configuration: MX, SPF, DKIM, DMARC, PTR
Complete DNS setup guide for Mailcow. Every record you need — MX, A, SPF, DKIM, DMARC, PTR, autodiscover — with exact values and common mistakes to avoid.
2026-04-01
Mailcow + GoHighLevel Integration: SMTP Setup Guide
Connect Mailcow to GoHighLevel for self-hosted email sending. Step-by-step SMTP configuration, authentication setup, and troubleshooting common connection issues.
2026-04-01
Mailcow Monitoring and Maintenance Checklist
Keep your Mailcow server healthy with this maintenance schedule. Daily, weekly, and monthly tasks for monitoring deliverability, updating containers, and preventing problems.
2026-04-01
Mailcow + n8n Integration: Automated Email Workflows
Connect Mailcow to n8n for automated email workflows. SMTP configuration, webhook triggers, and practical automation recipes for transactional and marketing email.
2026-03-30
Mailcow Complete Setup Guide: Self-Hosted Email Server (2026)
Deploy a full-featured self-hosted email server with Mailcow on a VPS. Complete guide covering Docker deployment, DNS configuration, SPF, DKIM, DMARC, and connecting to GoHighLevel or n8n.
2026-04-01
Mailcow vs. iRedMail vs. Modoboa: Which Self-Hosted Email Server?
Compare Mailcow, iRedMail, and Modoboa on installation, features, resource usage, web UI, and maintenance. Honest recommendations by use case.
2026-03-30
Mailcow vs Postal vs Stalwart: Which Self-Hosted Email Server?
Comparing the three best self-hosted email server options. Mailcow for full email server, Postal for outbound sending platform, Stalwart for modern Rust-based JMAP server.
2026-04-01
Modoboa Setup Guide: Modern Email Server with Web Admin
Deploy Modoboa — a Python-based email server platform with a modern web interface, domain management, and built-in anti-spam. Lighter alternative to Mailcow for small deployments.
2026-04-01
Postal + GoHighLevel Integration: SMTP Setup
Connect Postal mail server to GoHighLevel for self-hosted email sending. SMTP credentials, DNS configuration, and multi-client setup for agencies.
2026-03-30
Postal Setup Guide: Open-Source Postmark Alternative
Deploy Postal, the open-source transactional email server, on a VPS. Complete guide covering installation, DNS, authentication, webhook tracking, and connecting to GoHighLevel or applications.
2026-04-01
Postfix + Dovecot Setup Guide: The Manual Approach
Set up a bare Postfix + Dovecot email server from scratch. For experienced admins who want maximum control over their email infrastructure without Docker wrappers.
2026-04-01
Reduce Mailgun Costs: When Self-Hosting Makes Sense
Mailgun costs $75-525/month at scale. Learn when self-hosted SMTP, AWS SES, or hybrid architecture saves money without sacrificing deliverability.
2026-04-01
Self-Hosted DKIM Not Passing: Troubleshooting Guide
Fix DKIM authentication failures on self-hosted email servers. Diagnose key mismatches, selector issues, DNS propagation, and signing configuration for Mailcow, Postal, and Postfix.
2026-04-01
Self-Hosted Email Goes to Spam: Complete Troubleshooting Guide
Fix self-hosted email landing in spam. Step-by-step diagnosis of authentication, reputation, DNS, content, and configuration issues that cause spam placement.
2026-03-31
Self-Hosted Email Server Maintenance Checklist
The monthly, weekly, and daily maintenance tasks for self-hosted email servers. Updates, monitoring, backups, log review, and reputation management for Mailcow, Postal, and Postfix.
2026-03-31
Self-Hosted Email Security Best Practices
How to secure your self-hosted email server. TLS configuration, fail2ban, firewall rules, automatic updates, backup strategy, and preventing your server from becoming a spam relay.
2026-04-01
Self-Hosted Email Server: Is It Worth It in 2026?
Honest assessment of self-hosted email in 2026. When it saves money, when it wastes time, and who should actually do it. Real costs, real tradeoffs, no hype.
2026-04-01
Self-Hosted IP Blacklisted: How to Delist and Prevent Relisting
Your self-hosted email server IP is blacklisted. Step-by-step delisting from Spamhaus, Barracuda, SORBS, and other major blacklists, plus prevention strategies.
2026-04-01
How to Send Email Cheaply: Alternatives to Expensive ESPs
Cut your email sending costs by 50-90%. Compare self-hosted SMTP, budget ESPs, and hybrid architectures for businesses tired of overpaying for email infrastructure.
2026-04-01
SendGrid Too Expensive: Alternatives and Self-Hosted Options
SendGrid costs $20-450/month at scale. Compare cheaper alternatives including AWS SES, self-hosted SMTP, and budget ESPs that deliver the same results for less.
2026-04-01
Stalwart Mail Server Setup Guide: The Rust Alternative
Deploy Stalwart Mail Server — the modern, Rust-based email server. Complete setup guide covering installation, DNS configuration, and comparison to Mailcow and Postal.
2026-04-01
VPS Blocked Port 25: How to Fix or Work Around SMTP Restrictions
Your VPS provider blocks port 25 and your mail server can't send. How to request unblock at DigitalOcean, Vultr, AWS, and GCP — plus alternatives when unblocking isn't possible.
2026-04-01
How to Warm Up a Self-Hosted Email Server IP
Step-by-step IP warmup schedule for self-hosted mail servers. Build Gmail and Outlook reputation gradually without triggering spam filters or rate limits.