Selective transmission of an email attachment

Selectively marking email as partially reviewed

Self-cleaning and forwarding feature for electronic mailboxes

Self-destructing document and e-mail messaging system

Self-policing, rate limiting online forums

Self-protecting e-mail

Self-removing email verified or designated as such by a...

Self-removing email verified or designated as such by a...

Sender authentication for difficult to classify email

Sender elected messaging services

Sender reputations for spam prevention

Sender- specified delivery customization

Sender-defined time for reporting on the status of a sent...

Sending a file as a link and/or as an attachment

Sending a range

Sequence number resetting for synchronizing transfers in a...

Server and method for routing messages to achieve unified...

Server apparatus and method for electronic mail transmission...

Server apparatus for user data transfer

Server availability reporting using asynchronous e-mail message