Open and Click Tracking in Sendrealm: When to Enable Each

Open and click tracking can improve campaign decisions, but neither signal is a perfect record of human behavior. Tracking also changes the message: opens add a remote image and clicks route links through a redirect service.

Sendrealm lets teams set tracking on a sending domain and choose tracking behavior for email campaigns. The right configuration depends on the purpose of the message, the privacy expectations of the recipient, and the decision the metric will support.

How open tracking works

Open tracking inserts a small remote image with a unique URL. When a mail client requests the image, Sendrealm records an open event.

The event can be missing even when a person reads the message because images may be blocked. It can also appear without a deliberate human open because mailbox providers can prefetch or proxy images. Apple Mail Privacy Protection and similar features make exact recipient-level interpretation especially unreliable.

Use open rate as a directional, aggregate metric under consistent tracking conditions. It can help compare subject lines, audience cohorts, and send times; it should not trigger a sensitive action such as “the customer definitely read this notice.”

How click tracking works

Click tracking replaces eligible links with Sendrealm redirect URLs. A request reaches the tracking endpoint and is then redirected to the original destination.

Clicks usually represent stronger intent than image loads, but automated security systems frequently inspect links. A click event therefore means “the tracked URL was requested,” not always “the recipient deliberately clicked.”

For important outcomes, use your product as the source of truth:

• an activated account, not the email click
• a completed purchase, not the checkout-link request
• a changed password, not the reset-link visit
• a viewed document in an authenticated session, not the redirect alone

Domain defaults and campaign choices

Open the sending domain in Sendrealm to review its Open Tracking and Click Tracking settings. Those settings establish the domain posture for email sent through that domain.

Email campaigns also carry explicit tracking choices. Review them during campaign preparation rather than assuming the default is correct for every stream.

A practical domain strategy might be:

These are starting points, not universal rules. Legal, privacy, and product requirements differ by message and jurisdiction.

When to enable open tracking

Open tracking can be useful when:

• the team needs a directional campaign-engagement metric
• tracking conditions remain consistent across the comparison
• the result informs subject, timing, or audience experiments
• the privacy notice and recipient expectation support it

Keep it off when the number will not change a decision, when the message is especially sensitive, or when the product already records the relevant outcome more reliably.

When to enable click tracking

Click tracking is useful when:

• a campaign contains several calls to action
• lifecycle teams need to compare content relevance
• link-level traffic informs the next iteration
• the redirect does not interfere with security or signed URLs

Test carefully when links contain short-lived tokens, cryptographic signatures, or redirect constraints. Some security scanners visit links automatically, and another redirect hop can complicate strict allowlists.

Interpret rates with the right denominator

Before comparing reports, confirm whether the metric represents unique recipients or total events and which population forms the denominator.

Useful measures include:

• unique opens divided by delivered recipients
• unique clicks divided by delivered recipients
• click-to-open rate for a consistent tracking setup
• product conversions divided by delivered or targeted recipients

Do not compare an open-tracked campaign with one where open tracking was disabled. A zero in the second campaign means “not measured,” not “nobody opened.”

Tracking can affect deliverability and recipient trust

Tracking is only one of many delivery factors, but it changes message structure and URLs. Some filters and corporate gateways examine redirects and remote assets closely. Recipients may also view invisible behavioral tracking as intrusive.

Use a recognizable sending domain, authenticate it, avoid unnecessary redirect chains, and keep content honest. If a stream has delivery trouble, compare controlled samples with tracking changed one setting at a time rather than guessing.

A tracking review checklist

Before launch, answer:

1. What decision will this metric change?
2. Is the message transactional, promotional, or security-sensitive?
3. Is the domain setting appropriate for the stream?
4. Does the campaign override match the review decision?
5. Have signed and short-lived links been tested through the redirect?
6. Will scanners or privacy proxies distort the interpretation?
7. Is product-side conversion tracking available?
8. Does the privacy notice accurately describe the measurement?

After launch, keep the methodology stable long enough to compare results and annotate any setting change.

Measure the outcome, not only the email

Open and click events are intermediate signals. The real objective may be onboarding completion, invoice payment, feature adoption, document review, or renewal.

Sendrealm provides the email-side evidence. Connect it to your own product events and use each system for what it can prove. That produces better decisions than treating an open pixel as a complete customer journey.

See Email Event Tracking in Sendrealm for the full delivery timeline.