For the best experience turn off the battery saving mode.

Help Blog Contact
Sign In
En
Ger
Por
Ru
Rom
Ukr
No account yet?
Sign up for free
Forgot your Password?
Latin letters only
Latin letters, numbers and symbols
Already have an account?
Sign In
Registration
Latin letters only
Latin letters, numbers and symbols
Mobile virtual network operator © BSG
Glossary

Simple Mail Transfer Protocol (SMTP)

Simple Mail Transfer Protocol or SMTP is a simple communication protocol for sending e-mails over TCP/IP networks. SMTP is used by mail servers to send and receive e-mails. SMTP is also used by e-mail clients to send e-mails to a server for their further delivery.