How many Exchange accounts can you add to a single mail profile in Outlook?

Question

How many Exchange accounts can you add to a single mail profile in Outlook?

Answer 1

Hi @FEMY FRANCISCO ,

How many Exchange accounts can you add to a single mail profile in Outlook?

Beginning with Outlook 2013，by default up to 10 Exchange accounts can be added to a single mail profile.

But it you need to add more than 10 Exchange accounts in one profile for some reason, you can extend this limit up to 9999 using registry below:

Important: Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration in case problems occur.

Key: HKEY_CURRENT_USER\Software\Microsoft\Exchange
Value name: maxnumexchange
Value type: REG_DWORD

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