Brahmastra Mailer
Ports 25, 587, 465, AUTH, STARTTLS — that is the SMTP email service story. Brahmastra does not sell SMTP server for bulk email. Learn the protocol here, then SMTP vs our product and SMTP vs API.
Guide
What is SMTP?
SMTP (Simple Mail Transfer Protocol) is how servers move email. A bulk email SMTP server is just SMTP at marketing volume, with auth and abuse desks.