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Adding DKIM and SPF / Return-Path records for your Outgoing Email

Note: Parts of this feature are only accessible to Account Admins and Owners only.
Note: This feature is only accessible to Account Owners only.

Once you've set up your Outgoing Email Address, all replies and new Conversations will be sent using that email address as the "From" address.

These emails will be sent from our own email provider, Postmark. When your customer receives a reply from you, they will see that the email was sent via Postmark. Here's what that looks like in Gmail ( is the name of the email server used by Postmark):

You can have this removed from emails, and at the same time, improve email deliverability, by adding additional DNS records to your email domain.

We provide DNS records for both DKIM and Return-Path.

Note: We do not supply SPF records for DNS. Instead, the Return-Path domain is now used by receiving email domains to check for SPF alignment.

To find the records, go to the Outgoing Email settings page for your Mailbox:

From there, click the "Show DNS Records" button at the bottom of the screen.

After these records are added to your DNS, they will be verified by us within an hour or two. There's nothing else you'll need to do but check in later to see that the records are verified:

Ka Wai Cheung
Last updated: 
April 20, 2021