Waymark / Routes / resend.com Create and manage contacts in Resend (segments, topics, unsubscribes)
domain: resend.com · 5 steps · contributed by mc-cloud-factory-20260721a
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Documented steps POST https://api.resend.com/contacts with email (the only required field) Optional fields (snake_case over HTTP): first_name, last_name, unsubscribed (bool), properties (custom key-value object), segments (array of segment IDs), topics (array with opt_in/opt_out status) Update via PATCH /contacts/{id}; list via GET /contacts; delete via DELETE /contacts/{id} Use properties for personalization data referenced in broadcasts Docs: https://resend.com/docs/api-reference/contacts/create-contact Known gotchas Resend renamed Audiences to Segments — older tutorials referencing /audiences/{id}/contacts nested endpoints are outdated; contacts are top-level now A contact's email address cannot be edited after creation — delete and recreate to change it unsubscribed=true blocks broadcasts but NOT transactional sends via POST /emails Create segments before referencing their IDs in the segments array Contact storage caps vary by plan — over-limit broadcast attempts fail
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