Linking gmail accounts
To use this feature you must be a 'Gold' subscriber. You can link 3 additional email accounts under the paid plan. Linked accounts must be yours, you can create multiple free accounts using different gmail emails (accounts) and then link them to your primary paid account. Linked accounts share the same features/restrictions as the primary account. All features such as tracking statistics are per email account.
Click on the kodamail tab, then 'Link Gmail accounts':


Enter the email address of the free account you previously created (must have the kodamail extension installed), you will receive a confirmation asking you to sign out.

Sign out of gmail:


Google will then present you with a list of your accounts:

Select the appropiate account and sign in to google.

A confirmation will pop up confirming account is linked, close the pop-up and click on the 'kodamail' tab, then 'Link Gmail Accounts', the box will show that the account is linked to your primary account.


Now sign out of google.
Sign back in to your primary paid account, click on the kodamail tab, then: 'Link Gmail Accounts':

You will see a list of accounts linked to your primary account, to remove (un-link) an account uncheck the checkbox and the account will be removed.