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Hey @SendGrid
1. Why do you allow a customer to place a different customer's domain in the mail's From header?
and/or
2. Why do you share DKIM keys between customers? If you used differing ones, DKIM verification would have failed here
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RT @glenmaddern
@1Password This is what the headers look like in gmail btw:
https://twitter.com/glenmaddern/status/1278333730977918976