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Outlook Connector - Send an email from a shared mailbox.

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I setup a shared mailbox in our Office 365. I realized that is connected to my own O365 Email account. For my scenario here, we have maybe 100+ users who use Flow and would all like to use this Flow activity "Outlook- Send an email from a shared mailbox."and want to use the same Shared mailbox email address.

Do we need to add all 100+ members to this sharedbox? Or is there a way that we can configure it that everyone can use it even when we have new people, we dont have to manually add them to this mailbox.

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Brad_Groux 4,556 on at

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Re: Outlook Connector - Send an email from a shared mailbox.

This isn't really a flow question, it is an Office 365/Exchange Online administration question (documentation). What you'd want to do is assign a security/access group to that shared Mailbox, and anytime someone is added to that group, they would have access to the mailbox.
However, there is no fully supported way to add security groups to Shared Mailboxes, but there are workarounds via PowerShell:
Get-DistributionGroupMember GroupA | % {Add-MailboxPermission -Identity "Shared_mailbox" -User $_.Name -AccessRights ‘FullAccess’}
This is a case for using Office 365 Group mailboxes over Shared Mailboxes. If you use the Office 365 Group mailbox, anyone in that group can use the mailbox to send messages by running this PowerShell command:
Add-MailboxPermission -Identity "Shared_mailbox" -User "security-group-name" -AccessRights ‘FullAccess’

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Re: Outlook Connector - Send an email from a shared mailbox.

Well, my use case really is that I need a DoNotReply@XXXXX.com . And from the Flow it will send out an email from it. I dont really care about Shared mailbox. Just an alias or something. Are there other connectors I should use in Flow? Thanks again for your time

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Brad_Groux 4,556 on at

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Re: Outlook Connector - Send an email from a shared mailbox.

Office 365 accounts support aliases. If you create the alias, you should be able to use it from Flow without issue with the Office 365 Outlook connector. Office 365 also supports SMTP, so the SMTP connector is an option too. You should be able to use SMTP with these settings:

Server Address: smtp.office365.com
Username: Your Office 365 Alias (e.g. your@alias.com)
Password: Your Office 365 Password
Port Number: 587 (With TLS)
Authentication: Required
Sending Limits: 10,000 Emails a day

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Re: Outlook Connector - Send an email from a shared mailbox.

Sorry, I don't really want another mailbox that is linked to my personal account. Just a DoNoTReply@XXXXXX.com (doesn't even have to be a real mailbox) and all my Flow users can just use that DoNoTReply@xxxx.com when PowerApps are sending emails to Users. Trying to make it less administration on our O365 admin side.

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Brad_Groux 4,556 on at

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Re: Outlook Connector - Send an email from a shared mailbox.

As far as I know you dont't have a choice but to use an actual email address for security purposes. That's one of the main reasons they still have shared mailboxes in Office 365, when Office 365 Groups are the preferred.
They don't want SPAM/spoofing on their platform. Shared and Group mailboxes on Office 365 are nearly zero administration, and have no additional costs associated with them. Set it, and forget it.

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