Use the ‘Treat as an alias’ setting to manage ‘Send mail as’ account behavior

When you use Gmail's Send mail as to send messages on behalf of another account, Gmail treats your Send mail as address as an alias of your primary address, which causes the following results:

  • Messages you send to a Send mail as address appear as unread in your Inbox. These messages also appear in your Sent Mail.
  • If you receive a message from a Send mail as address and you click Reply, the To: field is incorrectly filled with your primary address.
  • If you receive a message from a group that uses the same address as your Send mail as address, and you click Reply All, the To: field does not include the address of the group that sent the message.
Example: Ben is Mary’s personal assistant. Ben often needs to send email on behalf of Mary, and he uses Send mail as to send emails for Mary from her account using his account. Because Ben and Mary email each other often, it’s confusing for Ben to see his emails to Mary appear as unread in his Inbox. Also, when Ben composes a reply to Mary’s email, the To: field shows his primary email address.

To change this behavior:

  1. Sign in to Gmail.
  2. Click and click Settings.
  3. Go to the Accounts tab.
  4. Under Send mail as, find the email address that you want to configure and click edit info.

  5. Deselect Treat as an alias.

  6. Click Save Changes.

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