cloudHQ Free Email Tracker and MailKing require that Gmail sends outgoing messages using Unicode (UTF-8).

Here are short steps how to ensure that your messages are send using Unicode:

  1. Sign-in to your Gmail Account.
  2. Click the gear icon located in the upper-right corner (Options > Mail Settings).
  3. In the “General tab” , scroll to the “Outgoing message encoding” section and select “Use Unicode (UTF-8) encoding for outgoing messages”:
  4. Click on the Save Changes button.