We found 3 dictionaries that define the word opt in email:

General (1 matching dictionary)

1. Opt-in email, Opt in email: Wikipedia, the Free Encyclopedia

Computing (2 matching dictionaries)

2. Marketing Terms.com - Internet Marketing Dictionary (No longer online)
3. Technopedia (No longer online)

▸ Words similar to opt in email ▸ Usage examples for opt in email ▸ Idioms related to opt in email ▸ Wikipedia articles (New!) ▸ Words that often appear near opt in email ▸ Rhymes of opt in email ▸ Invented words related to opt in email