Tools/Resend
ResendDraft the confirm. You send it — or the agent sends only after you say yes.
Your confirm lives in a different tool than your newsletter. Beehiiv sends the issue. Resend sends the email that has to land after they pay, book, or sign up.
Draft subject, from, to, and body. Leave it unsent until they say yes. Domain DNS is still a human step. The agent can list records. You click the registrar. Free is 3,000 emails a month and 100 a day. No card. Pro starts at $20 for 50k. Marketing plans are separate — do not blur them into transactional. Hosted MCP is real. Nothing leaves without your yes.
- Free: 3,000 emails/mo and 100/day — then Pro from $20/mo for 50k
- Hosted MCP at mcp.resend.com — OAuth or Bearer API key
- Agent drafts; you approve send (or say yes in-chat)
- Domain verify needs human DNS — agent can list records, not click your registrar
- Transactional vs marketing plans stay unblurred
Use cases
This is transactional mail, not a newsletter list
One confirm, receipt, or magic link. Beehiiv/Kit own the broadcast. Resend owns the send that must land after they act.
The agent drafts the payload. Send is gated
Subject, from, to, HTML/text. Leave it unsent until they say yes in that message. Domain DNS verify is still human.
You need an API key the agent can use
Human creates the account and key (or OAuth MCP). Agent never invents a key. Paste the key into the connector they trust.
Friday is delivery truth, not vanity opens
Pull send status for the messages they approved. Do not invent open rates or deliverability scores.
Draft the confirm. Gate the send.
Free tier is real. MCP is real. Nothing leaves without your yes.
- Agent never silent-sends
- Free caps are concrete (3k/mo, 100/day)
- Pay only when volume needs Pro/Scale