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Outlook - Attachment and Recipient Limits

This document details the size limits for UW-Green Bay emails and the maximum number of recipients.

Related KBs
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Outlook - Forward an Email as an Attachment

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.***

Keywordsattachment size limit outlook email recipient   Doc ID48525
OwnerSteve K.GroupUW Green Bay
Created2015-03-09 09:34:19Updated2022-12-06 15:49:02
SitesUW Green Bay
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