SMTP

Simple Mail Transfer Protocol

SMTP, or Simple Mail Transfer Protocol, is the standard internet protocol used for sending emails across networks.

How SMTP Works

The protocol functions as a delivery mechanism, enabling email clients to transmit outgoing messages to servers, which subsequently route these messages to recipient email servers. SMTP specifically handles outgoing email transmission between servers to ensure messages reach their destinations correctly.

Reception Protocols

SMTP is exclusively for sending emails. For receiving and retrieving messages, users rely on alternative protocols:

  • IMAP (Internet Message Access Protocol) - allows access across multiple devices with server-side synchronization
  • POP3 (Post Office Protocol v3) - downloads emails to a single device

ImprovMX SMTP

ImprovMX offers SMTP functionality through its Premium and Business tiers, providing users with a robust and reliable solution for sending emails from your domain(s).

  • Server: smtp.improvmx.com
  • Ports: 587 (STARTTLS) or 465 (SSL)

See our SMTP Introduction guide for setup details.

Still have questions? Feel free to reach out to our support team!