Subject: Stop receiving emails 10 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Opt-out of all emails 10 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Unsubscribe from promotional emails 8 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Unsubscribe from all emails 10 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Opt-out of emails 12 general knowledge quiz questions. It should take around 3 minutes to complete all the questions.

Subject: Marketing emails 16 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Customer appreciation emails 12 general knowledge quiz questions. It should take around 3 minutes to complete all the questions.

Subject: Interactive emails 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: HTML vs text-based emails 18 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Video emails 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Anniversary emails 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Account creation emails 10 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Feedback request emails 21 general knowledge quiz questions. It should take around 5 minutes to complete all the questions.

Subject: Referral request emails 8 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Retention Emails 8 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Individualized emails 8 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.