# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


X.400 is the universal protocol for email. X.400 defines the envelope for email messages so all messages conform to a standard format.

< Back to glossary

Need more information? Want to know more about what we do?
Contact Us or Call +44 (0) 1524 844669

Working together with