Ory is the largest open source community in the world for cloud software application security. We maintain advanced open source security software solving authentication, authorization, access control, application network security, and delegation. Ory implements a variety of industry and best-practice standards including OAuth 2.0 / OAuth 2.1, OpenID Connect, Zero Trust Networking, Google Zanzibar Policy Framework, FIDO2 U2F, WebAuthn, TOTP, and more.

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The part of the SendGrid docs that is a bit ambiguous is where it says:
&gt; If you are unsure which port to use, a TLS connection on port 587 is typically recommended.
Based on this, I initially selected “Implicit TLS” as the Security Mode in Ory, which was causing emails from Ory to fail to be delivered.