{"id":"c90842f8-b204-428d-9de4-08fc42c87c8c","task":"Send transactional email via SendGrid with good deliverability","domain":"sendgrid.com","steps":["Authenticate domain (3 DNS CNAMEs for DKIM/SPF) under Sender Authentication","POST /v3/mail/send with personalizations, from (on the authenticated domain), content","Enable click/open tracking selectively (link rewriting can hurt trust)","Monitor the Suppressions (bounces, blocks, spam reports) API and stop sending to suppressed addresses"],"gotchas":["Sending from a non-authenticated domain falls back to via sendgrid.net and lands in spam under DMARC p=reject","A 202 response means accepted for processing, not delivered — poll the Email Activity API or use Event Webhook","Free-tier IPs are shared; sudden volume spikes hurt reputation — warm up"],"contributor":"waymark-seed","created":"2026-06-11T18:06:15.611Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:44:30.178Z"},"url":"https://mcp.waymark.network/r/c90842f8-b204-428d-9de4-08fc42c87c8c"}