Forum Discussion

Erik Waterhouse's avatar
Erik Waterhouse
Copper Contributor
May 14, 2018

Best choice for echange to O365 mail migration

Currently my company's email is outsourced to a third party host, but the powers that be have decided to finally move everything onto O365.   I need to migrate around 50 users mail boxes (and every...
exchange
migration
office 365
sharepoint
VasilMichev's avatar
VasilMichev
MVP
May 14, 2018

The options will depend on what exactly is possible on the third-party email system, so best check with them directly. Without knowing the specifics there, we can only suggest using PST import/export and third-party tools, which are probably not the ideal solution...

jcgonzalezmartin's avatar
jcgonzalezmartin
MVP
May 14, 2018
You mention your users are already in Office 365, but: Are they using Exchange Online Mailbox? If the answer is No, then you can still do a cutover migration since you can enable/disable the EXO part of each user license as you need
  • BenStegink's avatar
    BenStegink
    Steel Contributor
    May 16, 2018

    Like others have said, the options and what will be migrated will vary based on your host and what route you take for migrating.  Another option I would at least take a look at is BitTitan (https://www.bittitan.com/migrationwiz/mailboxes/).  I've used them for several migrations in the past, going from email connecting over IMAP -> Office 365.  The also support Exchange -> Office 365 migrations and make it nice and simple/straightforward to perform the migration...especially if you do already have all your user accounts created in Office 365 already.