What is Reddit's opinion of Gmail Unsubscribe?

From 3.5 billion Reddit comments

It's been reported that unroll.me sells your data to uber. So while this will work it's not the best idea.

There is an open source program that is similar to unroll.me however: https://github.com/labnol/unsubscribe-gmail

There are tools like Unroll.me that rolls up all of your subscriptions into a single digest email to declutter your inbox.

Warning: Unroll.me came under scrutiny earlier this year for selling user's data. If that's a deal breaker (which I wouldn't disagree with you if you thought it was), there are some tools that don't have quite the same functionality but are still useful, such as Gmail Unsubscribe or Mailstrom