This warning appears on the plain /admin dashboard whenever the address in System Email - Email Address From has not been verified with Amazon SES yet. It shows for any admin with the Client Config permission (super admins never see it) and displays the exact address Sprwt will send from, with a (change email) link back to Client Config and a Send verification email button.

1. Click Send verification email to have Sprwt ask Amazon SES to resend the confirmation link to that address (functionally the same Amazon SES verification request the Verify button on the Sprwt + Amazon Email System integration card triggers).
2. Open that inbox and click Amazon's confirmation link.
3. The pop-up stops appearing once the address is confirmed verified.

If you dismiss it without verifying, it comes back once a day (it does not expire on its own) until the address is verified or changed. If you send through your own SMTP server instead of Amazon, this pop-up never appears - SMTP senders don't need Sprwt-side verification.