Forward Email Aliases to a Mailbox

An alias in Help Scout is any email address other than your custom address that automatically forwards messages to your Help Scout mailbox. If you've got multiple addresses that auto-forward, you want to add them to the Aliases field so that Help Scout can handle them correctly.

This article will help you make sense out of mailbox aliases.

A custom email address, such as, must be connected to your mailbox to use aliases in Help Scout. 

In this article

What an Alias is in Help Scout

Suppose that your custom address is, but you have other email addresses such as, and out there that your customers also use to contact you. You might want to auto-forward those other addresses in to Help Scout as well, to make sure you're not missing any support requests. 

Not sure if you need to use an alias or set up a separate mailbox? Check out When to Set up a New Mailbox for a handy guide and comparison! 

Declaring the other addresses as mailbox aliases tells Help Scout that you're expecting to receive email automatically forwarded in from that address. You'll find the Aliases field at Mailbox Settings > Edit Mailbox after you've connected your custom address. 

Why We Need to Know

Let's say auto-forwarding is set up for but you haven't added that address to your Aliases list. If a customer emails that address, the message is forwarded automatically to Help Scout. When you reply, will be included in the CC field because Help Scout doesn't know that is associated with your mailbox.

You'll see a duplicate thread of your reply in the conversation in Help Scout (the copy that was sent to in addition to the reply that was sent to the customer.

When you declare as a mailbox alias, Help Scout knows that is associated with your mailbox, so there's no need to CC that address, so no duplicate threads!

Replying From an Alias

If you'd like to reply to conversations using an alias address, head over to Mailbox Settings > Edit Mailbox and toggle Reply as Alias on, as shown above.

If using Reply as Alias, the alias must be verified before it can be used in a reply. Aliases that match the domain of your main mailbox address will be verified automatically. For aliases with a different domain, you'll be asked to verify ownership by entering the six-digit code that we'll send to the alias address.

When using Reply as Alias, an email address can only be added as an alias to a single mailbox. 

Verify your ownership of that email address, and you're ready to reply from it! Whenever an email is sent to your alias address, you will see it in the To: field in the conversation. For example, if you have set up as an alias for the mailbox, whenever you receive an email to, you will see in the To: field.  

When you hit reply to that conversation, a From: dropdown will appear, from which you can select the alias email address. The main mailbox (e.g. will be selected by default. When you choose to send as the alias, this selection will be saved from reply to reply. The email address you choose will be displayed in the From field in the email your recipient receives. Your mailbox signature is not appended to emails sent from the alias address.

Note: Replies sent from any automated or manual workflows will be sent from the main mailbox address (e.g.

Reply as Alias and Google OAuth

If you're using Google OAuth to send your outbound messages, you'll need to make sure the alias is set up as a Send from email address in your Gmail account for your mailbox address. As long as the alias is on the same domain as the mailbox address, Help Scout will still connect to Google OAuth to send your email. 

  1. Open the Gmail inbox for your main mailbox address
  2. Navigate to Settings > Accounts
  3. Under the Send mail as: section, double check that your alias address is listed. If it's not, you can add it by clicking Add another email address.

You'll find more details on sending emails from an alias in Gmail's help article.

Reply as Alias and SMTP

If your alias email is on the same domain as your mailbox address, we’ll send via SMTP. Depending on your email provider, you may be able to set up Send As permissions to avoid errors — check in with your email admin or support from your provider to ask if that's something your provider can do! 

More details can be found here: Use SMTP to Send From Help Scout

If your alias is on a different domain than the mailbox address, whether you're using Google OAuth or SMTP, emails are sent from the Help Scout servers. You can set up DKIM at that domain to help ensure those messages arrive safely. Use DKIM to Help With Email Delivery will walk you through those steps. 

Filtering by Alias

For tracking purposes, you might want to route all emails to a certain alias address into a folder, or assign them to a team member to work on. Using the To: Workflow condition to look for the alias email address is a great way to do so. For example, if you wanted to automatically tag and assign all conversations that were sent to alias, as well as show those in a folder, the Workflow would look like this:

Did this answer your question? Thanks for the feedback There was a problem submitting your feedback. Please try again later.