


In an on-premises Exchange Server, maximum email size limits are configured in several places (at the server, mailbox, and connector levels).

The following table contains the maximum attachment size limits for most popular email services: Mail serviceĪttachment Size Limit in Exchange and Microsoft 365 But most public email providers don’t accept emails larger than 25 MB. If you send large emails only within your organization (local network), you can set any attachment size in Outlook. Test result shows that CCProxy 7.3 (2013.06.19 or after) supports working with Microsoft Outlook 2013. If you have chosen, 'User/Password' outlook will fail to connect to email servers.
