Why did you guys choose for a &#x27;Pro&#x27; plan instead of pay what you use?<p>I have a small webdev agency with 25 clients, who together send more than 100 mails a day. Currently I use a managed VPS for that, but I want to move to something that is fully managed, scalable and has a great API.<p>Not to bash on the &#x27;Pro&#x27; plan. Just curious on why, and I hope you guys offer &#x27;pay what you use&#x27; in the future. The service looks promising.