December 21, 2016 HomeBlogThe Default Mailbox size for Exchange Online E3 and E5 users is increasing from 50GB to 100GB The Default Mailbox size for Exchange Online E3 and E5 users is increasing from 50GB to 100GB By pdhewjau Blog, Office 365 0 Comments Hey Guys, I was going through the office 365 Roadmap on the this link below, found they are planning to increase the mailbox size of E3 and E5 users from 50GB to 100GB. http://fasttrack.microsoft.com/roadmap#R-68127 Tags:Exchange Online, Mailbox Size Increase, Offfice 365 Roadmap, Office 365 Related Posts Microsoft Release wannacry/cryware Ransomware patch for Windows XP and Windows Server 2003 AD LDS(Active Directory Lightweight Directory Services) on Windows 7. [How To]Unattended Installation file Guide. About Author pdhewjau Prashant is a Microsoft MVP for Office Servers and Services. He works as Technical Lead on Thakral One and a Microsoft Certified Trainer for Windows Server, Exchange Server and office 365. Add a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment:*Name:* Email Address:* Website: Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.