Commonly confused
Opt in vs Opt out
“Opt in” and “Opt out” look alike but pull in different directions. Here is what each one means, with examples — and the difference that learners most often miss.
The key difference
Opt in means choose to take part in something. Opt out means choose not to take part in something.
opt in
- 1
Choose to take part in something
“You can opt in to the newsletter.”
opt out
- 1
Choose not to take part in something
“You can opt out of marketing emails.”
Stop mixing them up
Sink In turns confusable pairs like this into quick contrast drills, so the right particle becomes automatic.