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Mantle Resend Agent

Your AI email infrastructure assistant

Connect Resend and let the agent send transactional emails, manage audiences, create templates, and configure domains — your entire email pipeline from one conversation.

Connect your ResendSee all integrations

Free plan available · No credit card · API key connect

Available tools
24
Ready workflows
4
Tool categories
4
Shared connection
1

Capabilities

What the Resend Agent does

Six things that simplify your email infrastructure. All work with your real Resend account.

01

Sends transactional emails

Send single or batch emails with HTML, plain text, or React Email templates. Track delivery status in real time.

02

Manages audiences and contacts

Create audiences, add contacts, manage segments, and keep your lists clean — all through natural language.

03

Creates email templates

Build, update, duplicate, and publish email templates. Preview them before going live.

04

Configures sending domains

Add, verify, and manage custom sending domains. The agent handles DNS verification for you.

05

Manages API keys and webhooks

Create API keys for different environments and set up webhooks to track delivery events.

06

Handles broadcasts

Send bulk email campaigns to your audiences. Schedule, update, and track broadcast performance.

Setup

Three steps, two minutes

Get your API key. Connect it. Start sending emails with AI.

  1. 01Get your Resend API keyCopy your API key from the Resend dashboard at resend.com/api-keys.
  2. 02Connect to MantlePaste your API key in Settings and the agent connects to your Resend account instantly.
  3. 03Start sendingThe agent can now send emails, manage contacts, create templates, and configure domains.

Workflows

Powerful workflows, out of the box

Triggered by user actions, schedules, or email events.

01 · Trigger

Welcome email on signup

When a new user signs up, the agent sends a personalized welcome email using your template.

  1. 1User signs up
  2. 2Fetch user details
  3. 3Select template
  4. 4Send email

02 · Schedule

Weekly newsletter

Every Friday, compile your latest content and send it to your subscriber audience.

  1. 1Cron: Friday 10am
  2. 2Fetch latest content
  3. 3Build newsletter
  4. 4Send broadcast

03 · Trigger

Payment confirmation

When a Stripe payment succeeds, send a receipt email to the customer automatically.

  1. 1Stripe: payment received
  2. 2Fetch order details
  3. 3Render template
  4. 4Send email

04 · Button

Send a test email

One click to send a test version of any template to yourself for review.

  1. 1Select template
  2. 2Set test recipient
  3. 3Render preview
  4. 4Send test

Toolbox

Every Resend action, available as a tool

The agent can send, manage, template, and configure — through the official Resend API.

Tools
24
Categories
4
API
1

Email

6 tools

Send, retrieve, update, and cancel transactional emails.

  • Send email
  • Send batch emails
  • Retrieve email
  • Update email
  • Cancel email
  • List emails

Audiences & contacts

6 tools

Manage audiences, contacts, segments, and topics.

  • Create audience
  • List audiences
  • Create contact
  • Update contact
  • List contacts
  • Manage segments

Templates

6 tools

Create, update, duplicate, and publish email templates.

  • Create template
  • Get template
  • Update template
  • Duplicate template
  • Publish template
  • List templates

Domains & config

6 tools

Manage sending domains, API keys, and webhooks.

  • Create domain
  • Verify domain
  • List domains
  • Create API key
  • Create webhook
  • List webhooks

Control

Your email, your rules

Domain verification and API key management. Send with confidence.

01

Domain verification

Only send from domains you have verified. No spoofing, no surprises.

02

Scoped API keys

Create separate API keys for production and development with different permissions.

03

Pause in one click

Toggle the agent off from the dashboard. All email sending stops immediately.

04

Revoke anytime

Delete the API key from Resend to instantly cut all sending access.

FAQ

Questions, answered.

The practical details about access, setup, and using Resend with Mantle.

Resend is a modern email API for developers. It handles email delivery, templates, audience management, and analytics — with a great developer experience.

Yes. Resend supports both transactional emails (receipts, notifications) and broadcasts (newsletters, campaigns) to your audiences.

Yes. Resend works seamlessly with React Email for building beautiful, responsive email templates in JSX.

Add your domain, then add the DNS records Resend provides. The agent can check verification status for you.

You can start for free — no credit card needed. The Free plan includes a usage allowance that refills every 5 hours. Paid plans unlock more usage, every AI model, and team features.

Keep connecting

Resend is just the start.

Connect the other tools your team already uses—same workspace, shared context, and one place to discuss the result.

Explore all integrations

Resend + Mantle

Your emails, delivered.

Connect Resend and let AI send emails, manage contacts, and build templates. Start on the Free plan.

Connect your ResendBook a demo

No credit card required · API key connect · Revoke anytime