SMTP — Simple Mail Transfer Protocol
SMTP is the protocol for sending email (port 25, submission 587). It transfers messages from client to server and between mail servers. Retrieval runs via IMAP or POP3. Modern systems encrypt SMTP with STARTTLS.
SMTP is the protocol for sending email (port 25, submission 587). It transfers messages from client to server and between mail servers. Retrieval runs via IMAP or POP3. Modern systems encrypt SMTP with STARTTLS.