Prove that Twilio SendGrid accepted the message and can deliver it. The processed event of this message states it. The 202 response does not: it carries no identifier and no promise.

Contract identity.
FactValue
Contract idsendgrid.email.processed
Version1.0.0
Hashe062c2cc31e5e1bd
Completion levelprocessed
PublisherBuilt and signed by Provely.
CertificationProvisional
SkillTwilio SendGrid Mail API 0.1.0
Valid for provider API versionsv3

What is the intent?

Hand the message to Twilio SendGrid.

What is the subject and the action?

MemberValue
Subject typesendgrid.message
Canonical effectmessaging.email_send
Provider operationPOST /v3/mail/send
Idempotencynone, retry is not safe

Which false successes give CONTRADICTED?

  • duplicate side effect
  • pre existing state
  • wrong subject

The signed contract states the exact conditions, the evidence and the timing. The runtime reads them. The page states the promise.

Where do these rules come from?

  • sendgrid.openapi#/paths/~1v3~1mail~1send/post: sendgrid.openapi, retrieved 2026-09-08
  • sendgrid.openapi#/paths/~1v3~1mail~1send/post/responses/202: sendgrid.openapi, retrieved 2026-09-08
  • sendgrid.docs.events#event-webhook/the-processed-event/p1: sendgrid.docs.events, retrieved 2026-09-08
  • sendgrid.docs.mail#the-v3-mail-send-resource/the-response-carries-no-identifier/p1: sendgrid.docs.mail, retrieved 2026-09-08
  • sendgrid.events#/events/processed: sendgrid.events, retrieved 2026-09-08
  • sendgrid.docs.events#event-webhook/custom-arguments/p1: sendgrid.docs.events, retrieved 2026-09-08
  • sendgrid.docs.events#event-webhook/the-event-time/p1: sendgrid.docs.events, retrieved 2026-09-08
  • sendgrid.docs.events#event-webhook/the-properties-of-a-delivery-event/p1: sendgrid.docs.events, retrieved 2026-09-08

Can sendgrid.email.processed return VERIFIED from the action response alone?

No. The action response is E1, and an acknowledgement is never terminal success. The contract needs evidence of level E3 or higher from Twilio SendGrid Mail API.

What happens after the timeout?

The verdict is UNVERIFIABLE. The operation goes to a person for review.