How do I stop receiving Greenify forum/social emails?

[AC Question]

My email inbox is full of numerous emails from some type of forum or social communication network for Greenify (app installed on my Android 5.1.1 phone). I don't recall, but I must have accidentally signed up to receive these, but I no longer want them cluttering my Gmail inbox. I couldn't find a setting on my phone app, so I'm wondering if there's an on-line option where I can disable/cancel this.

 

[nahoku]

Open up one of the offending emails and see if there's an unsubscribe option near the bottom of the email. Might be easier to see if you do this on your PC/Mac.