Integrate Resend with 2,000+ apps and services

Create a new automation to automate email sequences

Remove an existing automation

Create a copy of an existing automation

Retrieve a single automation with its steps and connections

Retrieve a single automation run

Retrieve a list of automations

Retrieve a list of automation runs

Stop a running automation and disable it

Update an existing automation (enable or disable)

Cancel a broadcast campaign that is queued or scheduled before it is delivered to its audience

Create a new email broadcast campaign with subject, content, and target audience for bulk email sending

Permanently delete a broadcast campaign by its broadcast ID

Create a new draft broadcast that copies the segment, topic, sender, subject, reply-to, preview text, and content of an existing broadcast

Retrieve details of a specific broadcast including status, subject, audience, and send statistics

Get a list of all broadcast campaigns with their status, subject lines, and creation dates

Get the links clicked in a broadcast along with total and unique click counts for each URL

Get the recipients of a broadcast filtered by event type, such as delivered, opened, clicked, or bounced

Trigger the sending of a broadcast campaign to its target audience immediately or at a scheduled time

Update a draft broadcast's sender, subject, content, preview text, or target segment before it is sent

Add an existing contact to a segment by providing the contact ID and segment ID

Create a new contact with email address, optional name, custom properties, and segment/topic assignments

Import contacts in bulk from a CSV file, optionally mapping columns and assigning segments and topics

Permanently delete a contact by their contact ID

Retrieve a contact's details including email, name, properties, and subscription status by contact ID

Retrieve a single contact import with its status and the counts of created, updated, skipped, and failed rows

Get all topic subscriptions (opt-in/opt-out status) for a specific contact

Get a list of all contacts in the account with their email addresses and basic information

Retrieve a list of contact imports, optionally filtered by status

Get all segments that a specific contact belongs to

Remove a contact from a segment by providing the contact ID and segment ID

Update a contact's information including name, email, properties, or unsubscribe status

Update a contact's topic subscription preferences (opt-in or opt-out of specific topics)

Create a new custom contact property (metadata field) for storing additional information about contacts

Permanently delete a contact property. This removes the property from all contacts.

Retrieve details of a specific contact property including its name, type, and configuration

Get all custom contact properties defined for storing contact metadata

Update a contact property's name or configuration

Claim a domain already verified by another team. Returns a TXT record to add to your DNS for ownership verification.

Add a new sending domain for email authentication. Returns DNS records that must be configured for verification.

Remove a sending domain from your account. Emails can no longer be sent from this domain after deletion.

Retrieve details of a domain including DNS records, verification status, and configuration

Retrieve the latest claim status for a domain. Poll this endpoint to follow a claim status after starting a claim.

Get all sending domains with their verification status and DNS record requirements

Update domain settings such as the tracking subdomain, click and open tracking, TLS mode, or capabilities

Trigger verification of DNS records for a domain. Use after configuring DNS to check if domain is ready for sending.

Trigger DNS verification for a domain claim. Add the TXT record from the Claim operation before calling this.

Cancel a previously scheduled email by its email ID before it gets sent

Download a specific attachment from a sent email using the email ID and attachment ID

Get aggregated email metrics such as sends, deliveries, opens, and clicks over a date range, optionally broken down by period, domain, email, or broadcast

Get a list of all previously sent emails with their status, subject, and recipients

Get all attachments from a sent email by providing the email ID

Get details of a specific sent email including subject, recipients, status, and timestamps

Send a new email to one or more recipients with HTML or plain text content, attachments, and optional scheduling

Send an email with response buttons and pause workflow execution until the recipient clicks a response

Send up to 100 emails in a single API call for bulk email delivery with individual customization

Create a temporary public link to view a sent email in the browser

Reschedule a scheduled email by updating its scheduled_at time before it is sent

Create a new event that can be used to trigger workflows

Remove an existing event by ID or name

Retrieve a single event by ID or name

Retrieve a list of events

Send a named event to trigger matching workflows

Update an existing event schema

Create an inbox to send, receive, and organize email at an address on one of your domains

Create a named, colored label on an inbox

Permanently delete an inbox

Permanently delete a label from an inbox

Retrieve an inbox by its ID or email address

Retrieve the AI agent's instructions, tone, and enabled actions for an inbox

List all inboxes, newest first

List every label on an inbox, oldest first

Update an inbox's internal name or from name

Update the AI agent's instructions, tone, or enabled actions for an inbox

Update a label's name or color

Create an unsent draft, either for a new conversation or as a reply in a thread

Delete an unsent draft

Retrieve a draft

List unsent drafts, most recently updated first

Send a draft from the inbox address. The draft must have at least one To recipient, a subject, and an HTML or text body. A reply draft created without a subject has an empty subject, so set one first.

Update the recipients, subject, or body of a draft

Apply one or more labels to a thread. Labels already on the thread stay on it.

Move a thread to the trash folder. It is permanently deleted after 30 days.

Forward an email in a thread to new recipients

Retrieve a thread summary

Retrieve a single email from a thread

List the threads in an inbox, most recently active first

List the emails in a thread, oldest first

Take one label off a thread. The label itself is kept.

Send a reply to an email in a thread

Find threads by the text of their emails, who sent or received them, whether they have attachments, and their dates

Replace every label on a thread with the given labels, in one atomic change

Mark a thread read or unread, or move it to a folder

Get all API request logs for the account including request and response details

Retrieve details of a specific log entry including the request body, response body, and response status

Retrieve a specific received email including sender, subject, body, and headers by email ID

Download a specific attachment from a received email by email ID and attachment ID

Get all emails received through inbound email processing with sender, subject, and timestamps

Get all attachments from a received email including filenames, sizes, and content types

Create a new contact segment for grouping contacts based on criteria or manual assignment

Permanently delete a segment by its segment ID. Contacts in the segment are not deleted.

Retrieve details of a specific segment including its name, contact count, and creation date

Retrieve contact count metrics for the account, optionally broken down by segment

Get all segments in the account with their names, IDs, and contact counts

Get all contacts belonging to a specific segment

Rename an existing segment

Add up to 100 email addresses to the suppression list in a single request

Remove up to 100 suppressions at once by email address or by suppression ID

Add a single email address to the suppression list so Resend skips it at send time

Remove a single suppression by ID or email so Resend can send to the address again

Retrieve a single suppression by ID or email, including its origin and creation time

List suppressed addresses, optionally filtered by origin (bounce, complaint, or manual)

Create a new reusable email template with HTML content and dynamic variables for personalization

Permanently delete an email template by its template ID

Create a copy of an existing template with a new name for easy customization

Retrieve a template's details including HTML content, variables, and publish status by template ID

Get all email templates with their names, IDs, and publish status

Publish a template to make it available for sending emails. Required before a template can be used in email operations.

Update a template's name, subject, HTML content, or variables

Create a new subscription topic for organizing email preferences and managing unsubscribe options

Permanently delete a subscription topic by its topic ID

Retrieve details of a specific topic including its name, description, and subscriber count

Get all subscription topics with their names, IDs, and subscriber counts

Update a topic's name or description

Create a new webhook endpoint to receive real-time notifications for email events like delivered, opened, clicked, bounced

Delete a webhook endpoint. Events will no longer be sent to this URL.

Retrieve details of a webhook including its URL, subscribed events, and status

Retrieve a single event delivered to a webhook, including its payload and delivery status

Get all configured webhooks with their URLs, event subscriptions, and status

Retrieve the delivery attempts of a webhook event, most recent first

Retrieve the events delivered to a webhook, most recent first

Queue one more delivery of a webhook event. The webhook must be enabled.

Generate a new signing secret for a webhook. The previous secret stays valid for 24 hours.

Update a webhook's URL or the events it is subscribed to