How It Works

  1. Donate
    Donate $5 to a participating charitable organization of your choice and receive 500 CentMail stamps.
  2. Stamp
    Promote your favorite cause by attaching a CentMail stamp to each email you send.
  3. Verify
    Anyone you email can automatically verify your donation and confirm you're not a spammer. Since spammers send millions of emails every day, it is prohibitively expensive for them to donate even just 1¢ per email.
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