Has anyone found a method of sending emails to group mailboxes using SP.Utilities.Utility.SendEmail?

The technique is described here

Send E-mail from javascript using REST API

and the basic code works well.

The requirements are that all email addresses must be on the same domain, which my group email box is, but I still get the error stating "The e-mail message cannot be sent. Make sure the e-mail has a valid recipient."


  1. In the above post, it mentions that the domain can also be added to the send command, but an example of this is not mentioned - has anyone tried this method?

  2. In several alerts I've set up, the user id was defined as i:0#.w|internal\myid - is it possible to use this format to get around this error?

  3. Going into a List, and selecting "Manage My Alerts" > "Create New Alert" then select the list brings you to a screen that allows you to enter a User to be notified. The group mailbox can be entered here, and is verified, but then when selecting OK, I get the message

    "The user does not exist or is not unique. Technical Details Troubleshoot issues with Microsoft SharePoint Foundation. Correlation ID: 5386599d-6269-00d3-be65-6e6dbe3ef328"

    So how come it verified the ID on the screen, but then it errored out?
    How can I get my group mailbox registered as a valid user?

I don't have access to SP Workflows, so this option is not available to me.


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