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Resend is an email API for sending transactional and marketing email. Connect it to Adapt with a Resend API key.

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Set up credentials

1

Open the API Keys page

Sign in to the Resend Dashboard and select API Keys in the left sidebar.
2

Create an API key

Click Create API Key and give the key a name (up to 50 characters).
3

Choose a permission level

Select Full access to allow read and write on any resource, or Sending access to allow sending only. If you choose Sending access, you can optionally restrict the key to a specific domain.
4

Copy the key

Click Add to create the key, then copy the value (it starts with re_).
The key is shown only once. Store it somewhere safe before leaving the page.

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Connect to Adapt

1

Open Integrations

In Adapt, go to Settings > Integrations.
2

Find Resend

Search for Resend and select it from the catalog.
3

Start the connection

Click Connect to open the connection form.
4

Add your credentials

Enter the values you gathered above, then click Add connection:
Secret NameValue
RESEND_API_KEYYour Resend API key
You can rename the connection and choose whether it is shared with your organization or kept personal to you.
5

Test the connection

Ask Adapt to list your verified domains.

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Security

  • Credentials are encrypted at rest with AES-256
  • Scope the key to Sending access, and to a single domain, when you only need to send email
  • Resend keys do not expire automatically; rotate them periodically and delete unused keys
  • Never share your API key or commit it to source control

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Capabilities

Send transactional and marketing emails through Resend, and review domains and email activity from Adapt.

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Examples

Send a transactional email: 
Send a welcome email from Resend to new@example.com with the subject "Welcome aboard".
Check domain status: 
List my Resend domains and tell me which ones are verified.
Review recent activity: 
Show the delivery status of emails Resend sent in the last 24 hours.
Investigate bounces: 
Find emails that bounced today in Resend and summarize the reasons.