You can cancel your account any time. To cancel your account, click on the icon in the top right of the page when logged into Mailparser and then on "Settings". On the bottom of the list of settings you'll find a section called "Delete your account".
This will then open up a pop up screen to continue. Once you enter your current password and confirm the action, your account and all associated data will be deleted. This will also remove you from our mailing list.