Definition

Email that is explicitly requested by the recipient.

Information

The definition of opt-in email has been a matter of intense debate.

“single opt-in” vs. “double opt-in”

The term single opt-in simply means that actions were taken to sign up for the email in question. The term double opt-in means that the subscriber has actively confirmed their subscription, typically by responding to an automatically-generated message sent to the email address. Proponents of double opt-in may not actually use that term, as they feel any email labled “opt-in” must be verified.

Tools

marketingterms Email Marketing Services & Tools
marketingterms 2016 Email Marketing Price Comparison

Related Terms

email marketing, permission marketing

view all terms in the Email Marketing glossary or all terms in the Digital Marketing glossary

Courses

Udemy: Email Marketing – learn email marketing with online courses.

view all options in Email Marketing courses or all types of Digital Marketing courses

Sites

ClickZ : Email Marketing

Articles

Opt-This, Opt-That: Putting Permission to Rest
Small Business Computing (October 18, 2002)

Six Ways to Build an Opt-In List (From Zero)
Small Business Computing (September 16, 2002)

Opt-In: More Than Permission to Send
Small Business Computing (September 13, 2002)

Whatever Happened to Opt-In?
ClickZ (January 25, 2001)

How Much Opt-In Is Enough?
ClickZ (September 4, 2000)

Speaking The Opt-In Language
ClickZ (November 22, 1999)