I have the opposite problem. My inbox is overoptimized and clean, and I get no emails. Anyway, the usual suggestions have been mentioned already - like going th

I have the opposite problem. My inbox is overoptimized and clean, and I get no emails. Anyway, the usual suggestions have been mentioned already - like going through older emails and cleaning. This extension also works: https://www.inboxpurge.com/ https://www.inboxpurge.com/ You get a few free attemps to clean emails. You can even just use it to search for subscriptions and delete manually.