fronts-api-rate-limit on external message synchornization

Hi, Front team.

Our team is going to build an IM system for our customers and our employees.

we’d like to

• sync Sendbird messages from our customers to Front
• sync message from our employee replies in front to Sendbird thread

I saw you have rate limit policy, I want to know if this policy also applies to this api: https://dev.frontapp.com/reference/post_channels-channel-id-incoming-messages 

If so, as our business grows, we are going to break through the limit quickly. what can we do to resolve this problem.

thanks.