Native opt-ins are initiated when the browser prompts the user to grant permission without providing any additional context. These opt-ins are exclusively available on HTTPS-certified websites.

The content of native opt-ins is non-customizable as it is determined by the browser and varies depending on the browser, operating system, and localization. This type of opt-in typically presents three action buttons: Allow, Block, and Close.

Native opt-ins hold a clear advantage for several reasons:

1. They instill a sense of trustworthiness and familiarity among users, as they are commonly encountered across various websites.

2. Unlike custom opt-ins, native opt-ins offer simplicity and clarity, avoiding potential clutter.

3. Given contemporary user concerns regarding security and privacy, HTTPS-certified websites employing native opt-ins are viewed more favorably, as users tend to avoid non-secure HTTP sites.

Securing opt-ins from web users is pivotal for the long-term success of engagement and retention strategies. While acquisition may be an initial growth priority, sustaining user engagement is paramount.

Experimentation between default triggering and user-driven notification methods is possible. Timing variations for native opt-in prompts, such as immediate or delayed display, can be tested. Additionally, offering on-site customization through a bell icon allows users to trigger the opt-in prompt at their discretion.