Scenario: my home office comp, office comp and a laptop all have a free license of eM Client installed. all have different default email accounts. Can I add one additional email account that all 3 can have access to and still maintain a free license?
Free licenses are bind to the e-mail address. Since you have 3 different address, that not a problem. The problem is free license only allow 2 account being setup.
The only workaround is if your mail provider support retrieval of e-mail from another address. Such as Gmail. For example, if you do have Gmail, you can setup Gmail to retrieve mails from the other 2 account. That way you’ll only need one account to be setup and you’ll have access to all of your e-mails.