unsub
1
[ uhn-suhb ]
/ ʌnˈsʌb /
verb (used with or without object) un·subbed, un·sub·bing.
to unsubscribe from an online service, email updates, marketing messages, etc.:The service renews automatically, but you can unsub at any time.
noun
a person or an account that unsubscribes from an online service:The site sent too many spam emails in a single day and was flooded with unsubs.
Origin of unsub
1
First recorded in 1995–2000; by shortening