SendGrid Click Tracking Storage

### How SendGrid Click Tracking Works:
1. **Click Tracking Replacement**:
– When you enable click tracking in SendGrid, the links in your emails are replaced with SendGrid-generated URLs. These URLs point to SendGrid's servers.
– These URLs include unique identifiers that allow SendGrid to track which email, recipient, and link were clicked.

2. **Redirection**:
– When a recipient clicks the link, they are first directed to SendGrid's servers.
– SendGrid records the click event and then redirects the user to the original destination URL.

3. **Storage and Access**:
– **Tracking Data**: The click-tracking details, such as the email, recipient, timestamp, and original URL, are stored in SendGrid's database.
– **Accessible via API or Dashboard**: You can view and retrieve these details through the SendGrid dashboard or programmatically via the [SendGrid Event Webhook](https://docs.sendgrid.com/for-developers/tracking-events/event) or APIs.

### Where Click-Tracking URLs Appear:
– **Emails Sent**: The replaced URLs are visible in the email's source code sent to recipients.
– **Logs**: In your email sending logs or webhook data if you capture events.
– **Recipient Browsers**: The URLs are briefly visible in a recipient's browser before redirection.

### Example of a Click-Tracking URL:
A link in your email like:

https://example.com/page

Would be transformed into something like:

https://click.sendgrid.net/track?data=<unique_data>

If you're troubleshooting or analyzing, you can retrieve click-tracking information from:
1. **SendGrid Dashboard**: Check the Email Activity section for details.
2. **Event Webhooks**: Set up webhooks to capture `click` events with details about the URL and recipient.

Let me know if you need help configuring or analyzing SendGrid click-tracking data!