Adding Another Email Address in Gmail to Reply to Emails Forwarded from Shopify

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Topic summary

Difficulty adding a Shopify-forwarded address as a “Send mail as” in Gmail. The setup fails in the second step of Gmail’s Add another email address flow, preventing sending from a professional domain.

Context: Email forwarding from Shopify to Gmail is working (test messages arrive). The same Gmail flow worked previously for another site.

Roadblocks to prior troubleshooting steps:

  • 2FA (two-factor authentication) is now enabled on the Gmail account.
  • The “Less secure apps” option to allow basic app access is no longer available.
  • The DisplayUnlockCaptcha page link provided earlier is no longer accessible.

Request: Guidance to get past the second dialog and complete the connection so Gmail can send as the forwarded domain address.

Status: No resolution provided yet; assistance requested and issue remains open.

Summarized with AI on January 22. AI used: gpt-5.
1

Please assist,
I created forwarding email addresses in Shopify and tested them and I successfully received the tester email in the corresponding gmail account. However I am having a challenge “Adding Another Email Address in Gmail”

I was able to do this for a previous site by following the steps in Gmail: Settings>Accounts & Imports>Add Another Email Address

But this time I am getting a failure in the second dialogue box and when I refer to my notes from the last time I am also unable to do the following troubleshooting steps to get around this error:

  1. My gmail now has 2Fa authorization
  2. Lessen Security: There seems to be no feature to lessen security to allow access apps
  3. Visit this website and click continue: https://accounts.google.com/DisplayUnlockCaptcha
    (This website is no longer available)

Please help me get by the second dialogue box so I can connect my forwarding email to my gmail and finally be able to communicate with clients using an email with a professional domain name.