Monitor Your Activity

The Observability page gives you visibility into how your Nuntly integration is performing. It is organized into four tabs.

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API

The API tab displays:

• Request volume. A chart showing the number of API requests over time.
• Response times. A chart showing API response latency.
• Request logs. A table of recent API calls with method, endpoint, status code, and duration.

Use this tab to identify slow responses or unexpected error rates.

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Events

The Events tab shows a log of email events across your organization: deliveries, bounces, opens, clicks, complaints, and more. Use this tab to track what is happening to your emails after they are sent. Each entry includes the event type, the email ID, and a timestamp.

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Webhooks

The Webhooks tab shows the delivery status of webhook events: which events were successfully sent to your endpoint and which failed. Use this tab to troubleshoot webhook delivery issues. If events are failing, verify that your endpoint is responding with a 200 status code and that the URL configured on the webhook is correct.

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Delivery

The Delivery tab provides a comprehensive view of your email delivery performance over the last 30 days. It includes four charts:

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Email delivery

A bar chart showing sent and delivered emails over time, with the overall delivery rate.

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Email flow

A Sankey diagram visualizing the flow of emails from sent to their final states (delivered, bounced, complained) and engagement events (opened, clicked).

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Bounce rate

A bar chart showing daily bounce rates with a 4% threshold reference line. Hover over the rate to see the total number of bounces over emails sent.

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Complaint rate

A bar chart showing daily complaint rates with a 0.08% threshold reference line. Hover over the rate to see the total number of complaints over emails delivered.

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Understanding bounce rate

The bounce rate is the percentage of emails that could not be delivered to the recipient’s inbox. Bounces occur when an email address is invalid, the mailbox is full, or the recipient’s server rejects the message. A high bounce rate may indicate issues with email address validation in your application and can damage your sender reputation with email providers. Keep your bounce rate below 4%. Exceeding this threshold may result in reduced deliverability, suspension of your sending domain or organization, and can lead to permanent account closure.

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Understanding complaint rate

The complaint rate is the percentage of delivered emails that recipients marked as spam. When a recipient clicks “Report spam” or “Mark as junk” in their email client, it generates a complaint. A high complaint rate indicates that recipients did not expect or want your emails. Keep your complaint rate below 0.08%. Even a small number of complaints can significantly harm your sender reputation, as email providers use complaint rates as a key signal to filter or block future messages. Exceeding this threshold may result in suspension of your sending domain or organization, and can lead to permanent account closure.

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Learn more