resend

Use when working with the Resend email API — sending transactional emails (single or batch), receiving inbound emails via webhooks, managing email templates, tracking delivery events, managing domains, contacts, broadcasts, webhooks, API keys, automations, events, viewing API request logs, or setting up the Resend SDK. Always use this skill when the user mentions Resend, even for simple tasks like "send an email with Resend" — the skill contains critical gotchas (idempotency keys, webhook verifi

105stars15forksUpdated 4/25/2026

Data Science & ML #resend #email-api #nodejs #webhooks #transactional-emails #python

Security Assessment

High Risk(30/100)

Detected risks:

Secret Exposure([references/sending/single-email-examples.md] api_key =, [references/webhooks.md] api_key =, [SKILL.md] api_key =)

Sensitive File Access([references/sending/single-email-examples.md] .env, [references/webhooks.md] .env, [SKILL.md] .env)

Privilege Escalation([references/webhooks.md] sudo)

Security Score30/100

About resend

The Resend skill is designed to facilitate seamless interaction with the Resend email API, enabling users to send transactional emails, manage email templates, and handle inbound emails through webhooks. This skill addresses common challenges faced by developers when integrating email functionalities into their applications, such as ensuring email delivery, managing domains, and tracking delivery events. By providing a comprehensive set of features, it simplifies the process of sending and receiving emails, making it easier for developers to implement email solutions without getting bogged down by technical complexities.

FAQ

What is the purpose of the Resend skill?

The Resend skill is used for sending transactional emails, managing email templates, and handling inbound emails via webhooks.

What programming languages are supported?

The skill provides examples for both Node.js and Python.

Are there any limitations on batch email sending?

Yes, batch sending does not support attachments or scheduling, and if one email in the batch fails validation, the entire batch fails.

What is an idempotency key and why is it important?

An idempotency key prevents duplicate emails when retrying failed requests by ensuring that the same key with the same payload returns the original response without resending.

Do I need an API key to use this skill?

Yes, you need a Resend API key to send and receive emails.

All Files

21 files

references/segments.md1.9 KB