Resend

Use Resend to send emails, retrieve their status, manage contacts, and inspect domains. Configure a Resend API key and the sender, recipients, and content required by the operation.

Use returned email IDs to check delivery status. The block's actions define the available operations; template editing and analytics management are not exposed here.

Use the block

Send emails, retrieve email status, manage contacts, and view domains. Requires API Key.

Actions

Send Email

Send an email using your own Resend API key and from address

Inputs and outputs

Input

Parameter	Type	Required	Description
fromAddress	string	Yes	Email address to send from (e.g., "sender@example.com" or "Sender Name <sender@example.com>")
to	string	Yes	Recipient email address (e.g., "recipient@example.com" or "Recipient Name <recipient@example.com>")
subject	string	Yes	Email subject line
body	string	Yes	Email body content (plain text or HTML based on contentType)
contentType	string	No	Content type for the email body: "text" for plain text or "html" for HTML content
cc	string	No	Carbon copy recipient email address
bcc	string	No	Blind carbon copy recipient email address
replyTo	string	No	Reply-to email address
scheduledAt	string	No	Schedule email to be sent later in ISO 8601 format
tags	string	No	Comma-separated key:value pairs for email tags (e.g., "category:welcome,type:onboarding")
resendApiKey	string	Yes	Resend API key for sending emails

Output

Parameter	Type	Description
success	boolean	Whether the email was sent successfully
id	string	Email ID returned by Resend
to	string	Recipient email address
subject	string	Email subject
body	string	Email body content

Get Email

Retrieve details of a previously sent email by its ID

Inputs and outputs

Input

Parameter	Type	Required	Description
emailId	string	Yes	The ID of the email to retrieve
resendApiKey	string	Yes	Resend API key

Output

Parameter	Type	Description
id	string	Email ID
from	string	Sender email address
to	array	Recipient email addresses
subject	string	Email subject
html	string	HTML email content
text	string	Plain text email content
cc	array	CC email addresses
bcc	array	BCC email addresses
replyTo	array	Reply-to email addresses
lastEvent	string	Last event status (e.g., delivered, bounced)
createdAt	string	Email creation timestamp
scheduledAt	string	Scheduled send timestamp
tags	array	Email tags as name-value pairs
↳ name	string	Tag name
↳ value	string	Tag value

Cancel Email

Cancel a scheduled email before it is sent

Inputs and outputs

Input

Parameter	Type	Required	Description
cancelEmailId	string	Yes	The ID of the scheduled email to cancel
resendApiKey	string	Yes	Resend API key

Output

Parameter	Type	Description
id	string	Canceled email ID

Create Contact

Create a new contact in Resend

Inputs and outputs

Input

Parameter	Type	Required	Description
email	string	Yes	Email address of the contact
firstName	string	No	First name of the contact
lastName	string	No	Last name of the contact
unsubscribed	boolean	No	Whether the contact is unsubscribed from all broadcasts
resendApiKey	string	Yes	Resend API key

Output

Parameter	Type	Description
id	string	Created contact ID

List Contacts

List all contacts in Resend

Inputs and outputs

Input

Parameter	Type	Required	Description
resendApiKey	string	Yes	Resend API key

Output

Parameter	Type	Description
contacts	array	Array of contacts
↳ id	string	Contact ID
↳ email	string	Contact email address
↳ first_name	string	Contact first name
↳ last_name	string	Contact last name
↳ created_at	string	Contact creation timestamp
↳ unsubscribed	boolean	Whether the contact is unsubscribed
hasMore	boolean	Whether there are more contacts to retrieve

Get Contact

Retrieve details of a contact by ID or email

Inputs and outputs

Input

Parameter	Type	Required	Description
contactId	string	Yes	The contact ID or email address to retrieve
resendApiKey	string	Yes	Resend API key

Output

Parameter	Type	Description
id	string	Contact ID
email	string	Contact email address
firstName	string	Contact first name
lastName	string	Contact last name
createdAt	string	Contact creation timestamp
unsubscribed	boolean	Whether the contact is unsubscribed

Update Contact

Update an existing contact in Resend

Inputs and outputs

Input

Parameter	Type	Required	Description
contactId	string	Yes	The contact ID or email address to update
firstName	string	No	Updated first name
lastName	string	No	Updated last name
unsubscribed	boolean	No	Whether the contact should be unsubscribed from all broadcasts
resendApiKey	string	Yes	Resend API key

Output

Parameter	Type	Description
id	string	Updated contact ID

Delete Contact

Delete a contact from Resend by ID or email

Inputs and outputs

Input

Parameter	Type	Required	Description
contactId	string	Yes	The contact ID or email address to delete
resendApiKey	string	Yes	Resend API key

Output

Parameter	Type	Description
id	string	Deleted contact ID
deleted	boolean	Whether the contact was successfully deleted

Create Audience

Create a new audience in Resend

Inputs and outputs

Input

Parameter	Type	Required	Description
audienceName	string	Yes	The name of the audience to create
resendApiKey	string	Yes	Resend API key

Output

Parameter	Type	Description
id	string	Created audience ID
name	string	Audience name

Get Audience

Retrieve details of an audience by ID

Inputs and outputs

Input

Parameter	Type	Required	Description
audienceId	string	Yes	The ID of the audience to retrieve
resendApiKey	string	Yes	Resend API key

Output

Parameter	Type	Description
id	string	Audience ID
name	string	Audience name
createdAt	string	Audience creation timestamp

List Audiences

List all audiences in Resend

Inputs and outputs

Input

Parameter	Type	Required	Description
resendApiKey	string	Yes	Resend API key

Output

Parameter	Type	Description
audiences	array	Array of audiences
↳ id	string	Audience ID
↳ name	string	Audience name
↳ created_at	string	Audience creation timestamp
hasMore	boolean	Whether there are more audiences to retrieve

Delete Audience

Delete an audience from Resend by ID

Inputs and outputs

Input

Parameter	Type	Required	Description
audienceId	string	Yes	The ID of the audience to delete
resendApiKey	string	Yes	Resend API key

Output

Parameter	Type	Description
id	string	Deleted audience ID
deleted	boolean	Whether the audience was successfully deleted

Create Broadcast

Create a broadcast email for an audience in Resend

Inputs and outputs

Input

Parameter	Type	Required	Description
audienceId	string	Yes	The ID of the audience to send the broadcast to
broadcastFrom	string	Yes	Sender email address (e.g., "sender@example.com" or "Sender Name <sender@example.com>")
broadcastSubject	string	Yes	Broadcast email subject line
broadcastHtml	string	No	HTML content of the broadcast
broadcastText	string	No	Plain text content of the broadcast
broadcastReplyTo	string	No	Reply-to email address
broadcastName	string	No	Friendly internal name for the broadcast
broadcastPreviewText	string	No	Preview text shown in the inbox before the email is opened
resendApiKey	string	Yes	Resend API key

Output

Parameter	Type	Description
id	string	Created broadcast ID

Send Broadcast

Send a broadcast immediately or schedule it for later

Inputs and outputs

Input

Parameter	Type	Required	Description
broadcastId	string	Yes	The ID of the broadcast to send
broadcastScheduledAt	string	No	Schedule delivery in natural language (e.g., "in 1 min") or ISO 8601 format. Sends immediately if omitted
resendApiKey	string	Yes	Resend API key

Output

Parameter	Type	Description
id	string	Broadcast ID

Get Broadcast

Retrieve details of a broadcast by ID

Inputs and outputs

Input

Parameter	Type	Required	Description
broadcastId	string	Yes	The ID of the broadcast to retrieve
resendApiKey	string	Yes	Resend API key

Output

Parameter	Type	Description
id	string	Broadcast ID
name	string	Broadcast name
audienceId	string	Audience ID (legacy)
segmentId	string	Segment ID (the current recipient field)
from	string	Sender email address
subject	string	Broadcast subject
replyTo	string	Reply-to email address
previewText	string	Inbox preview text
status	string	Broadcast status (e.g., draft, sent)
createdAt	string	Broadcast creation timestamp
scheduledAt	string	Scheduled send timestamp
sentAt	string	Timestamp the broadcast was sent

List Domains

List all verified domains in your Resend account

Inputs and outputs

Input

Parameter	Type	Required	Description
resendApiKey	string	Yes	Resend API key

Output

Parameter	Type	Description
domains	array	Array of domains
↳ id	string	Domain ID
↳ name	string	Domain name
↳ status	string	Domain verification status
↳ region	string	Region the domain is configured in
↳ createdAt	string	Domain creation timestamp
hasMore	boolean	Whether there are more domains to retrieve

Triggers

A trigger starts a workflow when a supported event occurs in this service.

Resend Email Bounced

Trigger workflow when an email bounces

Configuration and outputs

Configuration

Parameter	Type	Required	Description
apiKey	string	Yes	Required to create the webhook in Resend.

Output

Parameter	Type	Description
type	string	Event type (e.g., email.sent, email.delivered)
created_at	string	Webhook event creation timestamp (ISO 8601), top-level created_at
data_created_at	string	Email record timestamp from payload data.created_at (ISO 8601), when present — distinct from top-level created_at
email_id	string	Unique email identifier
broadcast_id	string	Broadcast ID associated with the email, when sent as part of a broadcast
template_id	string	Template ID used to send the email, when applicable
tags	json	Tag key/value metadata attached to the email (payload data.tags)
from	string	Sender email address
subject	string	Email subject line
to	json	Array of recipient email addresses
data	json	Raw event data from Resend (shape varies by event type: email, contact, domain, etc.)
bounceType	string	Bounce type (e.g., Permanent)
bounceSubType	string	Bounce sub-type (e.g., Suppressed)
bounceMessage	string	Bounce error message

Resend Email Clicked

Trigger workflow when a link in an email is clicked

Configuration and outputs

Configuration

Parameter	Type	Required	Description
apiKey	string	Yes	Required to create the webhook in Resend.

Output

Parameter	Type	Description
type	string	Event type (e.g., email.sent, email.delivered)
created_at	string	Webhook event creation timestamp (ISO 8601), top-level created_at
data_created_at	string	Email record timestamp from payload data.created_at (ISO 8601), when present — distinct from top-level created_at
email_id	string	Unique email identifier
broadcast_id	string	Broadcast ID associated with the email, when sent as part of a broadcast
template_id	string	Template ID used to send the email, when applicable
tags	json	Tag key/value metadata attached to the email (payload data.tags)
from	string	Sender email address
subject	string	Email subject line
to	json	Array of recipient email addresses
data	json	Raw event data from Resend (shape varies by event type: email, contact, domain, etc.)
clickIpAddress	string	IP address of the click
clickLink	string	URL that was clicked
clickTimestamp	string	Click timestamp (ISO 8601)
clickUserAgent	string	Browser user agent string

Resend Email Complained

Trigger workflow when an email is marked as spam

Configuration and outputs

Configuration

Parameter	Type	Required	Description
apiKey	string	Yes	Required to create the webhook in Resend.

Output

Parameter	Type	Description
type	string	Event type (e.g., email.sent, email.delivered)
created_at	string	Webhook event creation timestamp (ISO 8601), top-level created_at
data_created_at	string	Email record timestamp from payload data.created_at (ISO 8601), when present — distinct from top-level created_at
email_id	string	Unique email identifier
broadcast_id	string	Broadcast ID associated with the email, when sent as part of a broadcast
template_id	string	Template ID used to send the email, when applicable
tags	json	Tag key/value metadata attached to the email (payload data.tags)
from	string	Sender email address
subject	string	Email subject line
to	json	Array of recipient email addresses
data	json	Raw event data from Resend (shape varies by event type: email, contact, domain, etc.)

Resend Email Delivered

Trigger workflow when an email is delivered

Configuration and outputs

Configuration

Parameter	Type	Required	Description
apiKey	string	Yes	Required to create the webhook in Resend.

Output

Parameter	Type	Description
type	string	Event type (e.g., email.sent, email.delivered)
created_at	string	Webhook event creation timestamp (ISO 8601), top-level created_at
data_created_at	string	Email record timestamp from payload data.created_at (ISO 8601), when present — distinct from top-level created_at
email_id	string	Unique email identifier
broadcast_id	string	Broadcast ID associated with the email, when sent as part of a broadcast
template_id	string	Template ID used to send the email, when applicable
tags	json	Tag key/value metadata attached to the email (payload data.tags)
from	string	Sender email address
subject	string	Email subject line
to	json	Array of recipient email addresses
data	json	Raw event data from Resend (shape varies by event type: email, contact, domain, etc.)

Resend Email Failed

Trigger workflow when an email fails to send

Configuration and outputs

Configuration

Parameter	Type	Required	Description
apiKey	string	Yes	Required to create the webhook in Resend.

Output

Parameter	Type	Description
type	string	Event type (e.g., email.sent, email.delivered)
created_at	string	Webhook event creation timestamp (ISO 8601), top-level created_at
data_created_at	string	Email record timestamp from payload data.created_at (ISO 8601), when present — distinct from top-level created_at
email_id	string	Unique email identifier
broadcast_id	string	Broadcast ID associated with the email, when sent as part of a broadcast
template_id	string	Template ID used to send the email, when applicable
tags	json	Tag key/value metadata attached to the email (payload data.tags)
from	string	Sender email address
subject	string	Email subject line
to	json	Array of recipient email addresses
data	json	Raw event data from Resend (shape varies by event type: email, contact, domain, etc.)

Resend Email Opened

Trigger workflow when an email is opened

Configuration and outputs

Configuration

Parameter	Type	Required	Description
apiKey	string	Yes	Required to create the webhook in Resend.

Output

Parameter	Type	Description
type	string	Event type (e.g., email.sent, email.delivered)
created_at	string	Webhook event creation timestamp (ISO 8601), top-level created_at
data_created_at	string	Email record timestamp from payload data.created_at (ISO 8601), when present — distinct from top-level created_at
email_id	string	Unique email identifier
broadcast_id	string	Broadcast ID associated with the email, when sent as part of a broadcast
template_id	string	Template ID used to send the email, when applicable
tags	json	Tag key/value metadata attached to the email (payload data.tags)
from	string	Sender email address
subject	string	Email subject line
to	json	Array of recipient email addresses
data	json	Raw event data from Resend (shape varies by event type: email, contact, domain, etc.)

Resend Email Sent

Trigger workflow when an email is sent

Configuration and outputs

Configuration

Parameter	Type	Required	Description
apiKey	string	Yes	Required to create the webhook in Resend.

Output

Parameter	Type	Description
type	string	Event type (e.g., email.sent, email.delivered)
created_at	string	Webhook event creation timestamp (ISO 8601), top-level created_at
data_created_at	string	Email record timestamp from payload data.created_at (ISO 8601), when present — distinct from top-level created_at
email_id	string	Unique email identifier
broadcast_id	string	Broadcast ID associated with the email, when sent as part of a broadcast
template_id	string	Template ID used to send the email, when applicable
tags	json	Tag key/value metadata attached to the email (payload data.tags)
from	string	Sender email address
subject	string	Email subject line
to	json	Array of recipient email addresses
data	json	Raw event data from Resend (shape varies by event type: email, contact, domain, etc.)

Resend Webhook (All Events)

Start a workflow for subscribed Resend email, contact, and domain events. Flattened email fields may be null for non-email events; use data for the full payload.

Configuration and outputs

Configuration

Parameter	Type	Required	Description
apiKey	string	Yes	Required to create the webhook in Resend.

Output

Parameter	Type	Description
type	string	Event type (e.g., email.sent, email.delivered)
created_at	string	Webhook event creation timestamp (ISO 8601), top-level created_at
data_created_at	string	Email record timestamp from payload data.created_at (ISO 8601), when present — distinct from top-level created_at
email_id	string	Unique email identifier
broadcast_id	string	Broadcast ID associated with the email, when sent as part of a broadcast
template_id	string	Template ID used to send the email, when applicable
tags	json	Tag key/value metadata attached to the email (payload data.tags)
from	string	Sender email address
subject	string	Email subject line
to	json	Array of recipient email addresses
data	json	Raw event data from Resend (shape varies by event type: email, contact, domain, etc.)
bounceType	string	Bounce type (e.g., Permanent)
bounceSubType	string	Bounce sub-type (e.g., Suppressed)
bounceMessage	string	Bounce error message
clickIpAddress	string	IP address of the click
clickLink	string	URL that was clicked
clickTimestamp	string	Click timestamp (ISO 8601)
clickUserAgent	string	Browser user agent string