Instituto Superior Técnico

Serviços de Informática

What is the maximum size of a message in IST’s mail service?

A message in IST’s mail service is limited to the maximum size of 25MB (including attachments), which corresponds to the e-mail size after being encoded by the e-mail application used. This limit is valid for e-mail exchanges between users with electronic mailboxes in IST’s central servers.

  • The maximum size of the attached files is approximately 18,75MB.

If you wish to send larger files, it is recommended the use of the FCCN’s file share service FileSender.