Articles

 Best Email Marketing Software for a VPS (MailWizz, Mautic, Listmonk & More)

Choosing the right self-hosted email marketing platform affects deliverability, ease of...

 Common Postfix Configuration Errors and How to Fix Them

Postfix is powerful but its configuration syntax and interconnected settings can trip up even...

 Email Marketing Best Practices & Common Pitfalls to Avoid

Even with perfect DNS authentication and a fully warmed-up IP, poor sending practices can still...

 How to Add List-Unsubscribe and One-Click Headers

Modern mailbox providers, especially Gmail and Yahoo, now require an easy, reliable unsubscribe...

 How to Check and Remove Your IP from Email Blacklists (RBL)

If your sending IP ends up on a DNS-based blacklist (DNSBL/RBL), mail from that address is...

 How to Configure SPF, DKIM, and DMARC (Complete Guide)

SPF, DKIM, and DMARC are the three DNS-based email authentication standards that Gmail, Outlook,...

 How to Configure SpamAssassin for Spam Filtering

SpamAssassin analyzes incoming mail content and characteristics to score and filter spam —...

 How to Install and Configure Dovecot for IMAP/POP3

Dovecot is the most widely used open-source IMAP/POP3 server, letting mail clients (phones,...

 How to Install and Configure Postfix as a Mail Transfer Agent

Postfix is the most widely used open-source Mail Transfer Agent (MTA) on Linux, handling the...

 How to Migrate Email Accounts to a New Mail Server

Moving email accounts between mail servers — whether switching self-hosted setups or...

 How to Monitor Email Deliverability and Sender Reputation

Deliverability isn't a one-time setup — it requires ongoing monitoring. This guide covers...

 How to Send Email via SMTP Relay from Your Application

Rather than configuring a full mail server, many applications only need to send transactional or...

 How to Set Up Catch-All Email Addresses

A catch-all address captures mail sent to any address at your domain, even ones you haven't...

 How to Set Up ClamAV for Email Virus Scanning

ClamAV provides open-source antivirus scanning for incoming email — catching malware...

 How to Set Up DMARC Reporting and Analyze Reports

Beyond simply publishing a DMARC record, enabling and analyzing DMARC reports gives you real...

 How to Set Up Email Aliases and Forwarding

Email aliases let one mailbox receive mail for multiple addresses, and forwarding routes incoming...

 How to Set Up Email Quotas and Storage Limits

Without quotas, a single mailbox can grow unboundedly, consuming disk space and potentially...

 How to Set Up Greylisting to Reduce Spam

Greylisting temporarily rejects mail from unfamiliar senders, exploiting the fact that legitimate...

 How to Set Up Multiple Domains on One Mail Server

A single Postfix/Dovecot mail server can host email for multiple domains — a common,...

 How to Set Up Reverse DNS (PTR/rDNS) for Email Deliverability

Reverse DNS (PTR record) maps your server's IP address back to a hostname — the opposite of...

 How to Set Up Webmail (Roundcube) for Your Mail Server

Roundcube provides a polished, browser-based email interface for your self-hosted mail server...

 How to Set Up a Complete Mail Server (Postfix + Dovecot + SPF/DKIM/DMARC)

This guide ties together everything needed for a fully functional, properly authenticated...

 How to Set Up a Transactional Email Server Separate from Marketing

Separating transactional email (password resets, order confirmations) from marketing/bulk email...

 How to Set Up a VPS for Email Marketing (Complete Guide)

Running your own email marketing infrastructure on a VPS gives you full control over...

 How to Test Email Deliverability Before Sending a Campaign

Testing deliverability before a real campaign send catches configuration problems while the...

 How to Troubleshoot Email Not Sending or Going to Spam

A step-by-step diagnostic checklist for the two most common email problems: messages that don't...

 IP Warm-Up: A Safe 30-Day Schedule for New Sending IPs

Mailbox providers like Gmail and Outlook monitor sending behavior closely and treat sudden...

 SMTP vs IMAP vs POP3: Understanding Email Protocols

Setting up a mail server requires understanding the three core protocols involved: SMTP for...

 Understanding Email Authentication: Why Modern Deliverability Requires SPF+DKIM+DMARC

Major mail providers now effectively require proper email authentication for reliable inbox...

 Understanding Email Bounce Types (Hard vs Soft) and Handling Them

Not all email delivery failures are the same — understanding the difference between hard...