User tracking is a cornerstone of effective email marketing. The SameSite attribute can influence how well you can track user interactions. For instance:
Strict: Cookies are not sent with any cross-site requests, meaning tracking cookies will not be sent when users click on links in your emails. This could limit the effectiveness of your tracking. Lax: Cookies are sent with top-level navigation but not with other types of cross-site requests. This is generally sufficient for tracking when users click on email links. None: Cookies are sent with all requests, but this requires that the cookies are set with the Secure attribute, meaning they must be sent over HTTPS.