I use Gmail because I know I'm not going to be able to keep an email server secure over time. But I still have to deal with shitty newsletters and other junk. After putting up with it for too long I decided to just domain-filter people that send me newsletters. The only thing that caused me trouble was LinkedIn, where people would occasionally message me expecting a fast response. So I solved that problem by deleting my LinkedIn account. If I reset my, say, Twitter password I know where to find it.

All other email from them and countless others is useless.