Allowlist Domains and Email Subjects Lines

Making sure you have access to our platform

Noah Reid avatar
Written by Noah Reid
Updated over a week ago

If your company has firewalls, you might need to request your IT department to allowlist certain domains, while allowing certain subject lines through!

The Guusto domains to allowlist are:

IP addresses: and

Guusto emails (including gift nomination emails) will be sent from [email protected]

Our subject lines for gifts are:
Sender Name sent you a Guusto gift card. ("Sender Name" will change on each gift email depending on who is the sender)

For account access:

One-time verification code

For nominations:
You've been nominated on Guusto!

For manager notifications:
Keeping you in the loop

For password resets:
Account Password Reset

You will also need to allowlist some email and subject lines for Mastercard as well.

The Mastercard token (access) emails are sent out from the email address: [email protected].

  • Subject line for the token email is: ‘Your Mastercard Reward Has Arrived!

If they need to be re-sent, the email resends come from this email address: [email protected].

  • Subject line for re-sent token emails is: ‘Don't Forget: Your Mastercard Reward Has Arrived!

If they are trying to access their Mastercard after completing the redemption process, the verification code will come from this email: [email protected].

  • Subject line for the verification code is: ‘Your Identity Verification Code

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