Office 365 Pre-migration information
- Identify and download any large attachments you want to keep.
Email messages with attachments greater than 25 MB won't migrate.
- Download your briefcase data if you want to keep it.
Briefcase content won't migrate.
- Print the next few days of your Zimbra calendar.
- Note any filters you want to recreate.
Filters will not migrate.
- Note any shares you may have (email folders and calendars).
- Note any contact lists you may have.
Contact lists will not migrate.
- Read the What data will and will not migrate from Zimbra to Office 365? knowledge base article.
- Ask questions, share thoughts in the Office 365 Migration Yammer group.
(To learn more about Yammer, see the Yammer LiveBinder.)
- Export the calendars you want to keep.
Calendars won't migrate.
- Export the contacts you want to import into Office 365.
Contacts won't migrate.