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Integration

Automate Resend with AI agents

Describe your email workflow in plain English. Twin builds an agent that sends messages, tracks delivery, monitors replies, and syncs data — all via Resend.

What you can do with Resend

Real Resend workflows the Twin community runs every day, ready for you to clone.

  • Send personalized transactional emails at scale

    Agents pull recipient lists, personalize subject lines and body content, then send via Resend's messages API.

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  • Monitor inboxes and detect replies automatically

    Poll Resend for delivery status and incoming replies across campaigns, then route responses to the right workflow step.

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  • Send scheduled daily digest emails

    Consolidate activity from multiple agents or data sources and deliver a single summary email each day via the Resend API.

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  • Segment contacts and personalize outreach

    Classify recipients by domain or profile, then send different message templates to each segment through Resend.

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  • Combine Resend with Google Sheets for list-driven campaigns

    Read contact rows from Sheets, send via Resend, then write delivery status back — keeping records current without manual steps.

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  • Trigger follow-up emails from CRM or pipeline events

    Watch for new leads or status changes in connected tools and fire Resend messages when conditions are met.

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How it works

Three steps from idea to a running Resend agent.

  1. 1

    Connect via OAuth

    Sign in to Resend once. Twin securely manages the connection and handles token refreshes for you.

  2. 2

    Describe the workflow

    Tell Twin in plain English what you want done in Resend. The agent figures out the API calls itself.

  3. 3

    Twin builds and runs

    Twin assembles the agent, runs it on demand or on a schedule, and adapts when Resend responds in unexpected ways.

Why Twin for Resend

What makes Twin a better fit than a generic automation tool.

No manual copy-paste between tools

The documented pain point is that copying data between tools creates stale records and missed follow-ups. Twin reads from your source — a spreadsheet, a CRM, a database — and sends through Resend in one unbroken flow.

Repeatable workflows, not one-off scripts

Agents built on Twin run the same Resend workflow every time on a schedule or trigger. There's no script to maintain or re-run manually each day.

Browser fallback when API coverage is limited

Resend workflows sometimes need steps that go beyond the API — checking a web page, reading a confirmation. Twin can handle those browser steps and hand off to the Resend API within the same agent.

Frequently asked questions

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