ceven

Resend

Triggers transactional emails based on product events, manages contact lists for targeted outreach, and monitors domain health for delivery reliability.

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Why use Ceven?

  1. AI native Resend integration

    • Describe the outcome and Ceven picks the right Resend calls, fills the parameters, and checks the result.
    • Structured, agent friendly tool schemas so each call runs reliably instead of by guesswork.
    • Rich coverage for reading, writing, and querying your Resend data, across all 62 of its actions.

  2. Managed auth

    • Built in OAuth with automatic token refresh and rotation.
    • One place to manage, scope, and revoke Resend access.
    • Per user and per environment credentials instead of shared keys.

  3. Agent optimized design

    • Actions are tuned from real success and error rates so reliability climbs over time.
    • Full execution logs so you always know what ran in Resend, when, and on whose behalf.
    • The agent pauses and asks when Resend is unclear instead of plowing ahead.

  4. Enterprise grade security

    • Fine grained access so you control which agents and people can reach Resend.
    • Least privilege by default, read scopes first and only the writes a workflow needs.
    • A full audit trail of every Resend action to support review and sign off.

Supported tools

Every action Ceven's agents can run on Resend, and when to use it.

Send Email
Use this to send a single email to a recipient. Ideal for alerts, welcome notes, or transactional receipts.
Create Contact
Add a new person to your Resend database. Use this when a user signs up or opts into a list.
Create Audience
Establish a new contact list. Use this to group users by cohort, plan, or interest.
List Contacts
Pull a list of all contacts. Useful for auditing your current reach or preparing a bulk export.
Retrieve Contact
Pull the full details of a single contact by their ID to check subscription status or metadata.
Create Domain
Register a new sending domain via the API to manage brand identity for different product lines.
Verify Domain
Confirm that DNS records are correct for a specific domain to ensure emails land in the inbox.
List Domains
Retrieve all domains connected to the account to monitor which ones are active.
Cancel Email
Stop a scheduled email from being sent. Use this when a user cancels an order before the confirmation fires.
Update Email
Change the content or timing of a scheduled email before it reaches the recipient.
Retrieve Email
Pull the status and content of a specific email to verify it was sent successfully.
Delete Contact
Remove a contact from the system. Use this to comply with data deletion requests.
Delete Audience
Remove an existing audience.
Delete Domain
Delete a domain through the resend email api.
List Audiences
List all audiences.
Retrieve Audience
Retrieve a single audience.
Retrieve Domain
Retrieve a single domain.
Update Domain
Update an existing domain.

18 actions · scroll to see them all

Frequently asked questions

Ceven implements an intelligent queuing system that respects the specific rate limits of your Resend plan. If a workflow triggers thousands of emails at once, the agent does not simply fire them and hope for the best. Instead, it buffers the requests and drips them out at the maximum allowed rate for your tier. If Resend returns a rate limit error, Ceven uses an exponential backoff strategy to retry the request. This prevents your API key from being throttled or temporarily blocked during high traffic events like a product launch or a large scale marketing blast.
Ceven cannot log into your DNS provider like Cloudflare or Route 53 to change records, but it can manage the verification process within Resend. The agent can trigger the verify domain action and then poll the Resend API to check if the domain has moved from pending to verified. If the domain remains unverified, Ceven can send a notification to your team with the exact DNS records that Resend is looking for, so your DevOps person knows exactly what to copy and paste into your domain registrar to fix the issue.
Ceven does not store a permanent archive of your email bodies. The agent generates the content in real time based on your workflow templates and passes it directly to the Resend API. Once the API confirms the request is accepted, the temporary payload is purged from the workflow memory. If you need a permanent record of what was sent, you should use Resend webhooks to push delivery events back into your own database or CRM. This approach ensures that sensitive customer data is not sitting in a middle layer longer than necessary.
Yes. You can configure the agent to dynamically select the from address based on logic within your workflow. For example, if the customer is based in Europe, the agent can use your eu domain, and if they are in the US, it uses your us domain. This is handled by passing the domain variable into the send email action. This allows you to maintain high sender reputation by keeping your traffic segmented and ensuring that the email originates from a domain that matches the user context or geographic region.
The Resend API handles contact creation as an upsert operation in many cases, but Ceven adds a layer of validation to avoid duplicates. Before calling the create contact action, the agent can run a search or retrieve contact call to see if the email address is already present. If it is, the agent updates the existing record with new metadata instead of creating a redundant entry. This keeps your audience lists clean and ensures that your unsubscribe preferences are tracked against a single unique identity across all your different email campaigns.
The limit is determined by your Resend plan tier, not by Ceven. Resend has different caps on the number of contacts and audiences depending on whether you are on the free or pro plan. If you attempt to create an audience that exceeds your current plan limit, Resend will return an error. Ceven catches this specific API error and provides a clear message in the workflow logs explaining that the plan limit has been reached, rather than letting the workflow fail with a generic error code.
Yes, Ceven can interact with the Resend scheduling engine. You can tell the agent to schedule an email for a specific future timestamp. If a trigger occurs that makes that email irrelevant, such as a user completing a task that the email was reminding them about, the agent can immediately call the cancel email action using the email ID. This ensures your users do not receive confusing or outdated communications, which is a common problem with traditional email tools that do not allow for real time cancellation of queued messages.
Ceven stores your Resend API keys in an encrypted vault that is isolated from the general workflow logic. The keys are only injected into the request header at the moment of the API call and are never exposed to the end user or logged in plain text. You can rotate your keys in the Resend dashboard at any time and update them in the Ceven integration settings. Because we use a secure proxy for all requests, the model itself never sees the raw API key, reducing the risk of secret leakage through prompt injection.

Alternatives to Resend

Other tools that solve a similar problem. Ceven supports these too, so you can switch or run more than one at once.

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