Tag Archives: Exchange Online

Change Maximum Message Size limits in Exchange Online

Until recently the largest allowed e-mail message size in Office 365 was 25 MB as the public “softlimit”, and a 35 MB technical “hardlimit”. Although most e-mail messages are much smaller than the 25 MB limit, attaching files to an e-mail will quickly get you over the message size limit, resulting in a Non-Delivery Report… Read More »