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ChooseFrom 365 for Office 365

  Customer Care Center 
Updated: 13-February-2018
See also:   
ChooseFrom for Microsoft Exchange
SendAsGroup for Microsoft Exchange
AutoReply 365 for Office 365

Office 365 mailbox may have multiple SMTP addresses. For outgoing messages Exchange online service always uses the primary SMTP address. For example, John Doe has a mailbox with primary SMTP address and secondary smtp address. John Doe can easily receive the message addressed both to and, but he cannot send the message as because Exchange online rewrites the From address to default one.
ChooseFrom 365 application allows Office 365 users to send a message with any of their own SMTP addresses as the From address.
The application is a cloud service.

We've just released a new feature: multiple display names associated with a single SMTP address.

If you have only one email address you might be interested in ability to send mails using different sender names.
Examples: John Doe <> BestFruits Co <> John Wayne <> info <> or LuxuryCars Co <> or Джон Уэйн <> helpdesk <> FreshMeat Ltd <> 约翰 <>

ChooseFrom 365 mail flow schema

Current version:


  1. Set up a connector.

    In Office 365, click Admin, then click Exchange to go to the Exchange Admin Center. Next, click mail flow, and click connectors.
    Click the plus sign icon to add a new connector. Create the connector named "ToChooseFrom365" with the following parameters:

    ChooseFrom 365 - connector parameters

  2. Let us know your default and alias addresses.

    Send a message to containing the following information:

    We'll send you back an e-mail confirming that you can test the service during a week.


  1. Open Outlook 365 and create a new mail message. Assuming that your alias address is "" place the follwing to the Subject line:

      Subject: This is a test
     You can add any display name:
     Subject: This is a test sendas: John Doe <>

  2. Send the message to any external Internet address you can operate.

  3. Receive the message you have just sent and make sure the sender address (the From: field) is the same you have set in the Subject line in step #1. Also check that the Subject line contains only "This is a test" phrase.


Q.  How to provide a list of addresses/aliases?
A.  Use the following format: ... ... ... ......................... ........................ ............................

Q.  I have cancelled my subscription. How do I reroute my emails away from ChooseFrom365 server?
A.  In Office 365, click Admin, then click Exchange to go to the Exchange Admin Center. Next, click mail flow, and click connectors. Delete the connector named "ToChooseFrom365".



Licensing policy: the product is licensed on annual subscription basis. In other words, one license allows you to use one alias (or a display name) during one year.

Number of licensesIndividual price Your payments will be securely processed by Share-it Your payments will be securely processed by Avangate  
1-10USD 25 Shopping Cart
Shopping Cart
11-50USD 23
From 51USD 21
All transactions are securely processed by our external registration providers. Customer Care CenterCustomer Support Center
   Shopping CartShopping CartShopping Cart

We charge a USD 5 fee to edit or remove an alias or a display name.

Feel free to send us your comments and criticism.

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