Send Email

Resend Send Email sends an HTML email immediately, with optional text, copy recipients, reply-to addresses, and tracking tags.

Inputs

Input	Type	Required	Description
Third-party account	Resend account	Yes	The API key used to send.
From	String	Yes	A sender such as `Acme <onboarding@example.com>`.
Recipients	List of emails	Yes	One or more destination addresses.
CC / BCC	Lists of emails	No	Copy recipients.
Subject	String	Yes	A non-empty subject.
HTML Content	String	Yes	The HTML message body.
Plain Text	String	No	A text-only alternative.
Reply To	List of strings	No	Addresses that receive replies.
Tags	List of name/value pairs	No	Resend metadata for categorization.

Tag names and values should contain only letters, numbers, underscores, and dashes.

Output	Type	Description
Email ID	String	Resend’s identifier for the send.

Store Email ID when a later action must retrieve delivery details.