My campaign has low deliverability

If the percentage of delivered campaigns is at the level of 50-60%, nothing terrible is happening. Subscribers often sign up on several browsers, when in practice they use only one. Then such a recipient is pending until he or she turns on the browser he or she signed up for.

Lower deliverability may be due to:

a) blocking notifications within the operating system - this applies to both desktop and mobile devices. In this case, the subscriber does not unsubscribe from notifications, but cannot receive them until they are unblocked

b) the expiration date of the notification - the shorter, the less chance that all subscribers will receive the notification

However, if the percentage of delivered campaigns oscillates between 0-20%, and the situation described in point B does not occur, then it is worth analyzing the integration once again, if it was done correctly.

To do so, check that:

a) the exact same script that was generated for this project was pasted into the page,

b) the exact same sw.js that was generated for this project was pasted into the server root path,

c) the website does not contain additional scripts or service workers (service worker.js, sw.js etc.) belonging to another provider.