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Outlook - Attachment and Recipient Limits
This document outlines the size limits for UW-Green Bay emails and the maximum number of recipients.
The maximum number of recipients is 249.
These are the email size restrictions:
- 25 MB external email to an internal email.
- 25 MB internal email to an external email.
- 50 MB, in theory, from internal email to another internal email.
- Don't expect 50 MB all the time. If an email between 25 MB and 50 MB isn't sending, use OneDrive to share attachment/email.
Note: Please keep in mind external email hosts may have their own email size limits lower than ours.