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O365Synchronizer

O365Synchronizer is a PowerShell module that allows you to synchronize users/contacts to user mailboxes contact list. It can also be used to synchronize users between tenants as contacts or guests.

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Releasev1.0.3

Language: PowerShell Updated: 2026-03-27T08:42:17.0000000+00:00

Documentation

O365Synchronizer Docs

Curated documentation workspace for O365Synchronizer.

O365Synchronizer helps synchronize Microsoft 365 contacts into user mailboxes or between tenants.

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Notes

Start with -WhatIf and a small pilot user set.
Curated examples stay under /projects/o365synchronizer/examples/.