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SudeshSharma-4223 avatar image
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SudeshSharma-4223 asked saldana-msft edited

office 365 shared mail

Hey guys,

I have purchased office 365. how do we send SMTP email (originating from a custom application like C# or Node) from a shared mailbox like info@XXXXXXX.in ? It seems like we need a "licensed" mailbox to use SMTP authentication.

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Just checked in to follow up with this post. Should the replies were useful, you can accept it as answer. If you have any further questions or concerns, please feel free to post back.

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YukiSun-MSFT avatar image
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YukiSun-MSFT answered YukiSun-MSFT commented

As far as I know, Office 365 Shared Mailboxes usually don't require a license and have no SMTP access to Exchange online. If you would like to send mail using SMTP AUTH client submission, then you must have a licensed Microsoft 365 or Office 365 mailbox to send email from.

For more information about options available to setup third-party hosted application or devices to send email using Microsoft 365 or Office 365, hopefully you can find the document below helpful:
How to set up a multifunction device or application to send email using Microsoft 365 or Office 365

You may also have a look at the following link which discusses a relevant question:
Can Office365 shared mailbox use SMTP?
Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.


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I am writing to see how things are going with this thread. Any update would be appreciated. Thanks!

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AndyDavid avatar image
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AndyDavid answered

Send it anonymously as that shared mailbox and do not use authentication.

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