What's the size limit of email message, including attachments?
The maximum size of email message, both incoming and outgoing, is 25MB including attachment and email message. Please make sure that your email size including the attachment does not exceed the limit.
Please note that some businesses and institutions across the globe may not be able to receive large size emails.
If the total size of documents / files / attachment is more than 25MB, and you are unable to reduce the size, you may consider to use free cloud services such as Dropbox, OneDrive and Google Doc to share the files with the recipients.
Reviewed / Updated on 1/8/2016