If I actively keep my Contact list under 500, will that keep me at the $15 Pro Tier?

Hey! 

TLDR: If I actively keep my Contact list under 500, will that keep me at the $15 Pro Tier?

Have been testing and now using ManyChat’s automation in a way that is perhaps a little different from the traditional “Comment “X” and I’ll send you my Ebook” approach. 

I run social media for a video game where we use deeplinks in pretty much all of our posts to drive DAU to our game from our social channels. 

I’ve been using ManyChat’s automation features to drive engagement by asking user to comment “X” and our official account replies directly to their comment with a deep link. I run these for 3 days and then turn off the automation. 

We were doing it on a small scale at first so didn’t need to worry about contact limits at the time. Eventually switched to PRO and had no issues the first month at all. Month 2, we did a few campaigns and I guess this took me over the tier limit and ended up paying $30 as opposed to $15 the month before. Not a big deal tbh but after watching the video here, I’m wondering if I can keep the cost to the $15 by simply deleting contacts on an ongoing basis? 

Maintaining the contact list has no real benefit to me as we are just interested in having the folks click the deep link URL. 

TLDR: If I actively keep my Contact list under 500, will that keep me at the $15 Pro Tier?