https://unsubscriber.eu/
Unsubscriber - Take Control of Your Inbox
Privacy-focused iOS app to unsubscribe from unwanted emails and monitor who is communicating with you. Manage email subscriptions with one tap. Zero data...
take controlinbox
https://chromewebstore.google.com/detail/gmail-unsubscriber-ondevi/nijocmfchokplllpmfonnchdljmddcfo
Gmail Unsubscriber Ondevice - Chrome Web Store
Sidebar actions for unsubscribe, selecting similar emails, and archiving in Gmail.
gmailondevicechromewebstore