Will Norris

Comment Saver temporarily stores the content of comments in a browser cookie 
just in case something goes wrong while submitting the comment. For example, 
if the user forgot to include their name and email address and those fields are 
required, the comment may be lost on some browsers. When the user returns to 
the comment form, Comment Saver will automatically populate the comment box if 
the cookie is still set. It will remove the temporary cookie once the comment 
has been successfully submitted, or after one hour.

Comment Saver

Save comment content in a cookie in case something goes wrong while posting.

Mark Jaquith

Joen Asmussen

Subscribe to Comments is a robust plugin that enables commenters to sign up for e-mail notification of subsequent entries. The plugin includes a full-featured subscription manager that your commenters can use to unsubscribe to certain posts, block all notifications, or even change their notification e-mail address!

Subscribe to Comments

Subscribe to Comments allows commenters on an entry to subscribe to e-mail notifications for subsequent comments.

Comment Saver vs Subscribe to Comments