Canned Emails - A minimal site with prewritten emails
DeepMail - Diligently sourced emails. Accurate emails for Startups and established companies
Rename Email - Easily change the subject of any email, by cloudHQ
Hunter - Find all the email addresses related to a domain
ShowSubjectGmail - Edit the "subject" field when replying in Gmail!
analyze.email - Test the spam-y-ness of your emails