From the Zoho Campaigns dashboard, click the gear icon in the top-right corner. Select Settings.
Under Campaign Policy, click Campaign Tracking.
Under Email Opens: Complete Tracking, click on Change
In the dialog that appears, click the radio button next to Do not track.
Click the Apply button to confirm.
From the Campaigns dashboard, either create a new campaign or open an existing draft.
In the campaign creation page, scroll down past the content section. Click Show advanced options.
In the tracking section, click on Change next to Email Opens.
Choose one of the following options:
For campaigns sent to consented segments, select Complete Tracking and click Apply.
For campaigns sent to non-consented or general segments, select Do not track and click Apply.
No new emails will include a tracking pixel
Campaign reports will no longer show open rates for those campaigns.
Response actions triggered on "email opened" events will stop functioning.
Lists and segments based on opens will no longer work
Contact scoring rules based on opens will stop counting new opens