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MS documentation does not list a hard limit to the number of connections. &nbsp;I know I have over 10 on most of the mailboxes in my domain. &nbsp;between outlook, mobile devices and other BYOD devices I have yet to see a hard limitation.
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MS documentation does not list a hard limit to the number of connections.  I know I have over 10 on most of the mailboxes in my domain.  between outlook, mobile devices and other BYOD devices I have yet to see a hard limitation.

SAM2009

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There really isn't a way to limit devices connected via IMAP because the IMAP protocol isn't able to track that. You will, however, run into the maximum active connections per mailbox limit after a while.
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There really isn't a way to limit devices connected via IMAP because the IMAP protocol isn't able to track that. You will, however, run into the maximum active connections per mailbox limit after a while.

Fractional CTO

David Favor

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Vasil is correct. The above shows how to effect the server side limit.<br />
<br />
Also, in each IMAP client, you can also set number of concurrent threads. Default various from 5-10 connections for different clients.<br />
<br />
You can easily raise or lower this limit by changing the per mailbox account settings in your client.
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Vasil is correct. The above shows how to effect the server side limit.

Also, in each IMAP client, you can also set number of concurrent threads. Default various from 5-10 connections for different clients.

You can easily raise or lower this limit by changing the per mailbox account settings in your client.

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<div class="content wysiwyg-content">
Hi,<br />
<br />
In O365 is there a limit number of connection for IMAP connection per mailbox?<br />
<br />
Thanks
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Hi,

In O365 is there a limit number of connection for IMAP connection per mailbox?

Thanks

In O365 is there a limit number of connection for IMAP connection per mailbox?

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Exchange

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Microsoft 365

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