Skip to main content
Sequenzy tracking settings with callouts showing email tracking, double opt-in, and UTM defaults
Sequenzy automatically tracks engagement metrics for all emails you send. This helps you understand how subscribers interact with your emails and optimize your campaigns.

​
What We Track

Sequenzy tracks three types of email engagement:

​
How Tracking Works

​
Open Tracking

When you send an email, Sequenzy embeds a tiny invisible image (1x1 pixel) at the end of your email. When the subscriber’s email client loads this image, we record an open event.
Some email clients block images by default or use privacy features that prevent accurate open tracking. Apple Mail Privacy Protection, for example, can pre-fetch images, which may inflate open rates. Keep this in mind when analyzing your metrics.

​
Click Tracking

All links in your emails are automatically wrapped with tracking URLs. When a subscriber clicks a link:
  1. The click is recorded with the link URL
  2. The subscriber is immediately redirected to the original destination
The redirect is instant and invisible to the subscriber.

​
Tracking hostname

Tracked links use your company tracking domain, for example links.yourdomain.com. Every sending domain uses it, so you set it up once, in Settings → Tracking or with Set Tracking Domain. It is optional and never blocks sending: until it verifies, or if its DNS record breaks or you remove it, links use Sequenzy’s shared tracking domain. See Domain Verification. The same hostname serves the “view in browser” link, and the unsubscribe and preference links while unsubscribe tracking is on, so emails use it even when open and click tracking are off.

​
Confirm which tracking domain is in use

To check whether your workspace uses a custom tracking domain, open Settings → Tracking, run sequenzy tracking domain, call the MCP tool get_tracking_domain, or call Get Tracking Domain: This shows what emails sent from now on use. Emails already sent keep the hostname they were sent with, so to check a specific email, look at the host of its “view in browser” or tracked links.

​
Unsubscribe Tracking

The unsubscribe link in your emails is tracked separately from regular clicks. This gives you visibility into:
  • How many people are unsubscribing
  • Which emails drive the most unsubscribes
  • Unsubscribe trends over time
When you turn Unsubscribe tracking off, Sequenzy unsubscribe links in subsequent sends, go directly to https://sequenzy.com. This applies even when you use a custom tracking domain. Footer links and one-click unsubscribe headers follow the same setting. Actual unsubscribes and their email attribution are still recorded. Links in emails already delivered keep working as before.

​
Disabling Tracking

Sequenzy email tracking settings with callouts showing opens, clicks, and advanced controls
You can disable tracking for your entire account in your settings. This is useful if:
  • You want to respect subscriber privacy
  • Your audience is privacy-conscious (e.g., security professionals)
  • You’re in a regulated industry with strict tracking requirements
  • You simply don’t need engagement metrics
To disable tracking:
  1. Go to Settings in your dashboard
  2. Navigate to the Tracking section
  3. Toggle off the tracking options you want to disable
You can disable each tracking type independently: The account-wide switches above are the master policy for campaigns, sequences, and Transactional API sends. To keep tracking on for marketing emails while changing only the Transactional API defaults, expand Open tracking or Click tracking and use its nested Transactional emails switch. These transactional defaults are enabled for new workspaces.
Disabling open or click tracking means you won’t have that engagement data for metrics, automation conditions, or segmentation based on email activity.
The same settings are available outside the dashboard, so an agent or script can audit and change them:
The API endpoints are Get Tracking Settings and Update Tracking Settings, and the MCP tools are get_tracking_settings and update_tracking_settings. Changes apply to emails sent afterwards - emails already sent keep the links and pixels they were rendered with.

​
Per-send opt-out (transactional API)

Transactional API sends use the dashboard’s Transactional API Tracking defaults when trackingSettings is omitted. A send can turn off tracking for a single message without changing those defaults. Pass a trackingSettings object with clickTracking: false to skip link rewriting or openTracking: false to skip the open pixel on that send. This is useful when a click-tracking redirect domain would break iOS/Android universal links or deep links, so you can keep tracking on account-wide for marketing while sending those specific emails untracked. These fields only opt out: they cannot enable tracking that is disabled by either the account-wide or Transactional API default.

​
Engagement Data and Retention

This section describes what Sequenzy stores about delivery and engagement, how long it keeps it, and what deleting a contact removes. Use it when you write a privacy notice.

​
What is stored for each open and click

The IP address, user agent and country are part of the open or click event, so they are kept as long as the event (below). Requests Sequenzy classifies as bots, such as link scanners and image prefetchers, are stored the same way and excluded from your engagement metrics. To detect scanners, Sequenzy also keeps recent click IP addresses in a short-lived cache for about three minutes. Deliveries, bounces, complaints and unsubscribes store no recipient IP address, user agent or location. With open and click tracking off, emails contain no tracking pixel or tracked links, so no open or click events are recorded and no recipient IP address, user agent or country is stored. While the account-wide switch is off, Sequenzy also ignores pixels and tracked links in emails sent before you turned it off. To keep counting opens and clicks without storing these details, turn off email content storage instead.

​
How long it is kept

These periods are the same for every workspace. To keep less, turn off email content storage or delete contacts.

​
When you delete a contact

When you delete a contact from the dashboard, API, CLI or MCP, Sequenzy removes the contact profile and its list memberships and cancels its active sequences. Erasing the contact’s recorded data runs in hourly batches, so it usually finishes within about an hour of the deletion. It can take longer when many contacts are deleted at once. Deleted events and attributes stop appearing in reports and segments as soon as the erasure runs, and are removed from storage, usually within a week.
  • Contact activity events, per-contact engagement counts, custom attributes and segment memberships are deleted. Past poll results and recommendation revenue no longer include the contact.
  • Delivery and engagement events are anonymized. The email address, contact ID, IP address, user agent, country and subject are removed, along with email addresses in their delivery details and the query string of each clicked URL. The events stay, so past send, open and click totals do not change. Counts of unique recipients and per-link click reports can shift slightly.
  • Sequence, goal, product recommendation, SMS and reply events keep their counts with the link to the contact removed.
  • Sent emails records are deleted. If the contact marked an email as spam, that record is kept without its subject, content or contact link, because it stops the address from being emailed again. Bounce suppressions also keep the address. A bounce or spam complaint that arrives after the records are deleted is not recorded.
Inbox conversations and replies follow their own retention period. SMS messages and outbound webhook delivery logs are not erased with the contact; the logs are deleted after 30 days. Deleting the workspace permanently deletes all of this data.

​
Don’t store email content

Most workspaces don’t need this. Leave email content storage on unless your privacy policy or a customer requires you not to keep email content or the IP addresses of opens and clicks. Turn off Store email content under Advanced in Settings → Tracking, or set emailContentStorageEnabled to false with Update Tracking Settings, sequenzy tracking update --store-content off or the MCP tool update_tracking_settings. For emails sent afterwards:
  • Sent emails removes the content once an email is sent or fails. An email still waiting to be sent keeps its content and subject until then.
  • Once an email is sent or fails, its name (the campaign, template or sequence name) is stored in place of its subject. Events, contact activity and webhooks use the name too.
  • The template of a trackAs email is replaced with a placeholder on its next send.
  • The queued job for a Send Email API call is removed once the email is sent.
Opens and clicks are still counted and still drive segments and automations, but store no IP address, user agent or country, and click IP addresses are not added to the scanner-detection cache, so strict bot filtering catches fewer scanner clicks. This follows the setting at the time of each open or click, so it also covers emails sent before you changed it. With this setting off, “view in browser” links show a message instead of the email and Sent emails shows no preview. Emails blocked as phishing keep their content as evidence until the 14-day cleanup, and test emails keep their content. The change takes effect within about a minute.

​
Privacy Considerations

Sequenzy is designed with privacy in mind:
  • No third-party tracking: All tracking data stays within Sequenzy
  • Subscriber data protection: Tracking data is associated with subscribers, not sold or shared
  • Easy opt-out: Subscribers can unsubscribe with one click
  • Configurable: You control what gets tracked

​
GDPR Compliance

If you’re subject to GDPR, you should:
  1. Include tracking disclosure in your privacy policy
  2. Consider disabling tracking for EU subscribers if required
  3. Honor unsubscribe requests promptly (Sequenzy does this automatically)

​
Events Generated

Email tracking automatically generates events that you can use in automations and analytics: These events can trigger sequences, apply sync rules, and appear in subscriber timelines.

Events

Learn more about events and how to use them in automations

​
Best Practices

Track open and click rates over time to identify:
  • Which subject lines perform best
  • Optimal send times for your audience
  • Content that resonates with subscribers

​
2. Use Tracking Data for Segmentation

Create segments based on engagement:
  • Active subscribers: Opened or clicked in the last 30 days
  • Inactive subscribers: No engagement in 90+ days
  • Highly engaged: Clicked multiple emails

​
3. Respect Unsubscribes

High unsubscribe rates indicate:
  • Email frequency is too high
  • Content doesn’t match subscriber expectations
  • List quality issues
Use unsubscribe data to improve your email strategy.

​
4. Consider Your Audience

If your audience is privacy-focused:
  • Be transparent about tracking in your emails
  • Consider disabling open tracking (less invasive than click tracking)
  • Highlight your privacy practices

UTM Tracking

Configure automatic campaign attribution for email links

Metrics

View and analyze your tracking data

Campaigns

Send broadcast campaigns

Sequences

Create automated email workflows

Subscribers

Manage your subscriber list