ChooseFrom for Exchange online/Office 365


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An Office 365 mailbox may have multiple SMTP addresses. For outgoing messages, the 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 can not send the message as because Exchange online rewrites the From address to default one.

The 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.


  • You do not need to create an additional “fake” mailbox or contact specifically for storing an additional From address.
  • The application is server-centric, so you do not need to install any extra software on the client side.

This description is not a review but information provided by the product vendor or obtained from the vendor's website.