KI 0124 How can I send large attachments by e-mail?
If you wish to send multiple files, consider sending several e-mails with fewer attachments per e-mail.
You may share your file(s) from OneDrive and just send the link. Please see KI 0620 How to cooperate or share documents in OneDrive? for more information.
As an alternative the service Filesender may be used. See https://filesender.uninett.no/