Mailchimp - Reduces your price if you use two-factor authentication. 
/via Anders

Mailchimp - Reduces your price if you use two-factor authentication. 

/via Anders

Mailbox - The app categorizes emails from your own address as “Note to self”

Mailbox - The app categorizes emails from your own address as “Note to self”

Amazon - 2 years after purchase date, you receive an email offering to trade in your book for a gift card./via Simon Souris

Amazon - 2 years after purchase date, you receive an email offering to trade in your book for a gift card.

/via Simon Souris

Sugru - Lets you look at the most recent issue of their newsletter before actually signing up for it. 
/via stepoffthishurtlingmachine

Sugru - Lets you look at the most recent issue of their newsletter before actually signing up for it. 

/via stepoffthishurtlingmachine

ThinkGeek - You have the option to temporarily unsubscribe for the holidays.
/via Kayle

ThinkGeek - You have the option to temporarily unsubscribe for the holidays.

/via Kayle

Kickstarter - The email sign up field proposes related email provider is it thinks you may have mistyped your email.
/via renaud

Kickstarter - The email sign up field proposes related email provider is it thinks you may have mistyped your email.

/via renaud

Foodivide - When you try to sign up for their newsletter with the same address twice, they appreciate the enthusiasm./via Shein 

Foodivide - When you try to sign up for their newsletter with the same address twice, they appreciate the enthusiasm.

/via Shein 

CSSHat - After purchasing and downloading CSS Hat, it adresses you by your email in the installation process.
/via Jonathan Shariat

CSSHat - After purchasing and downloading CSS Hat, it adresses you by your email in the installation process.

/via Jonathan Shariat

Facebook - If you try to log in with a wrong password, Facebook will send you an email with an Instant Login link.
/via Hannes Struß

Facebook - If you try to log in with a wrong password, Facebook will send you an email with an Instant Login link.

/via Hannes Struß

Basecamp - When you copy-paste an email ID like “John Doe <myemail@gmail.com>”, it automatically strips everything and leaves just the email address.
/via Harpal

Basecamp - When you copy-paste an email ID like “John Doe <myemail@gmail.com>”, it automatically strips everything and leaves just the email address.

/via Harpal