No, it does not. Whether you have a free or a paid MailKing account, your overall sending limit per day is the same and is determined by Google, not by us. A free MailKing account limits you to 50 emails at a time, but only Google imposes restrictions on total emails sent per day.
We’ve had users express surprise that they subscribed to MailKing, yet still couldn’t send as many emails as the Gmail published limits, so it’s important to know that MailKing has no ability to control how many total emails you can send per day.