Overview
Use Resend as a data source for Chartcastr. Connect your Resend account with an API key and Chartcastr will pull email delivery metrics to generate charts delivered automatically to Slack or email. Chartcastr connects with read-only access to your Resend account — it only needs permission to read email analytics data.Setup
Create a Resend API Key
In Resend, go to API Keys (direct link) and create a new key. Copy the key — you’ll need it in the next step.
The API key starts with
re_. You only need read-level access for Chartcastr to pull email metrics.Connect in Chartcastr
In Chartcastr, go to New Source and select Resend. Enter your API key and click Test & Connect Resend to validate the connection.
Select a metric
Choose which email metric to track. Each metric becomes its own source. You can add multiple sources to track different aspects of your email delivery.
Available Metrics
| Metric | Description |
|---|---|
| Emails Sent Per Day | Total emails sent each day over the last 30 days |
| Email Delivery Status | Stacked breakdown of delivered, bounced, and complained emails per day |
Next Steps
Slack destination
Deliver Resend charts to your Slack channels with AI summaries in the thread.
Email destination
Schedule Resend delivery reports to any inbox or distribution list.