If your email is me@mine.com, me+[anythinghere]@mine.com is a valid email address and messages sent to it and will end up in your inbox.
I tend to use specific aliases for services that send a lot of notifications (like me+amazon@mine.com) and generic ones (like me+archive@mine.com) for everywhere else (specially tools I am signing up for to try out, and I hate drip email campaigns they trigger)
You can then set up rules on your email service provider to automatically route emails to a sub folder, spam or archive based on the to address.
I use G Suite — I mark all emails from Amazon as read automatically (I still want to be able to search for them if needed), move most email to spam automatically, and move newsletters I really want to read to the inbox instead of updates and star them.
Oh, and you can also automatically respond with “unsubscribe” to stop receiving emails from services. Most marketing email services support this.