Cutting task usage
how-toAt a two-minute interval, 750 tasks could be gone "within a day or two".
Open the trigger > update frequency > interval, and set the maximum offered (15 instead of 2). In the Gmail search, restrict to emails "worthy enough" to cost money, such as from one sender. Put a Filter early so irrelevant runs stop. And evaluate which daily tasks even need automation. Usage shows at the bottom left of the dashboard.
Keeps automation affordable as volume grows.

