Struggling with granting SendAs permissions on user’s cellphones?
Just use our lifehack to set it up!

Not so long ago, Misha Hanin wrote about the most convenient way to tackle multiple email addresses on your desktop. Now, we want to help you solve the challenge of setting up Receive As / Send As options on users’ mobile devices.

When using email software we often do simple things, for instance, we send emails as someone else: Support, Marketing or HR team. Of course, there is no malicious or spam actions here – only our job functions delivery. So, let’s quickly solve a simple quiz from the brave Exchange Online world:

  • We have our own two domains, and  
  • The primary domain is, but the user needs to send their emails from another address, for example,

Let’s suppose we use Office 365 in this particular example. How can we solve this and enable the user to choose between different Send As options?

We can use several solutions here:

  1. Create a shared mailbox and use OWA Private mode for sending emails, grant Send As rights beforehand.
    If we want to send emails from one address this will work fine, but what if we are responsible for more than five email addresses?
  2. The second way is a little bit easier, but it relies on more work steps to accomplish the task:
    Use POP or IMAP connection and simply add our account needed in Outlook. Again, not a great idea, right?
  3. The third way is the most convenient one and it’s well-known to any Exchange admin:
    Simply create shared mailbox, mail contact or distribution group with members and use Send As rights with Outlook client. As simple as that, right? Extremely fast and neat, it’s should always be our choice. But!

What if the user wants to send emails using mobile, now what? Tell them Forget about it bud?
We can’t say that for sure, so we should just use one tiny lifehack.

Ready, Set, Go!

  1. Create a shared mailbox and give Send As rights to the user.
  2. Set up a strong password using MSOL cmdlets  (you can always use Office 365 Admin Center).
    And now the most magical step…
  3. Add this shared mailbox in user’s mobile Outlook as the second one (this step is critical).
  4. Enjoy sending your impersonating emails using mobile device!

There it is, homework solved.
Written by Dima Razbornov

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