Send email over SMTP API

If you already use SMTP-compatible software, such as marketing platforms, CRMs, or internal apps, you can integrate with Infobip’s SMTP API. This method provides a straightforward way to connect without modifying your existing email logic.

Connection details

SMTP host: smtp.infobip.com
Port: 587 (TLS) or 465 (SSL)
Authentication: Your Infobip username and password (or API key if configured)

Example SMTP session

telnet smtp.infobip.com 587 EHLO example.com AUTH LOGIN <username base64> <password base64> MAIL FROM:<[email protected]> RCPT TO:<[email protected]> DATA Subject: Welcome to Infobip From: [email protected] To: [email protected] Content-Type: text/html <html> <body> <p>Hello, welcome to our service!</p> </body> </html> . QUIT

Read more about sending emails over SMTP.

Send email over HTTP API Send email using MIME format