Can different domain email addresses access files and chat on Teams?

VC 0 Reputation points


We have 3 companies, each with a different domain name, however we would all like to be able to chat and share files on Teams. Is this possible? And how is it done?

e.g we have the following domain email addresses:, and

Could it be done by creating an email alias of the for both and

Thanks for any advice

Microsoft Teams
Microsoft Teams
A Microsoft customizable chat-based workspace.
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  1. LiweiTian-MSFT 16,845 Reputation points Microsoft Vendor

    Hi @VC

    As members of different tenants, shared channels in teams I think are the best way to collaborate (chat vs. file sharing).
    You can invite external users into a shared channel and chat or share files with them. Please refer to this document for more details on shared channels.User's image

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