Email providers like Google and Yahoo are getting smarter. If your emails go ignored three times, they’re dispatched straight to the spam folder. Remember, the more your emails land in the right inboxes, the higher your open rates. 

So, to keep your email list engaged and productive, you need to weed out the duds. One way to do this is by using a double opt-in system. This ensures that subscribers genuinely want your content. Encourage them to add you to their trusted address book to boost your chances of landing in the inbox. 

However, also know when to take a step back. If a subscriber goes radio silent and doesn’t open your emails three times in a row, it might be time to part ways. But before you do, send them an ultra-customized email to grab their attention. You can use subjects like: “Did you forget about us?”, “Too many emails?”, or “Should we stop with __?

If they start engaging again, then great! If not, it’s time to remove them from your list.