When you use DidTheyReadIt, e-mails that you send are automatically and invisibly tracked. The instant the recipient opens your message, DidTheyReadIt automatically notifies you.
You sent it, but did they read it?
Using DidTheyReadIt is remarkably easy. All it takes is 2 simple steps. DidTheyReadIt is 100% compatible with Windows and Mac, and all different e-mail clients. Read below for setup instructions, or click here for frequently asked questions.
1. Sign up for an account which you can do by clicking here .
2. Start sending tracked messages. Please click one of the following that best describes your e-mail program and how you send e-mails:
- Microsoft Outlook on Windows Operating System
- Thunderbird on Windows Operating System
- Gmail, Yahoo or Hotmail web email on Windows Operating System
- Mac users
- All others (works for everyone)
Source : http://www.didtheyreadit.com/