The attachment size limit for sending files through the Outlook client can be modified, but the upper limit for sending the file cannot be more than that permitted by the email server. In case you are using an Exchange server, the limits might vary.
If an email server allows its users to send attachments of larger sizes, they could be sent through their web application but not through the Outlook desktop or mobile client. This is irrespective of the email server being used. Speaking of the Outlook desktop client (not the email server), the maximum permitted attachment size is 20 MB. We have listed the maximum attachment size limits and sizes for files for the following services: Most cloud servers allow uploading files up to 5-15 GB in size free of cost, so it must not be an issue.Īttachment Size Limits for common service providers One way to mitigate this problem is to upload attachments on cloud drives and send the link to the recipient through email. On trying to do the same, email servers may give an error stating The attachment size exceeds the allowable limit or The file you’re attaching is bigger that the server allows – Or then the email simply won’t get sent or received. Usually, any email service does not allow sending files larger than a few MB’s in size. A known issue while sending files through email is the limit on the size of the attachments.
