Throttling

Throttling caps the pace and volume of outbound — messages per hour, per day, per inbox — instead of firing a list all at once. Sending a thousand emails in a burst looks like a machine to mailbox providers, so spreading them across the day with conservative per-inbox limits keeps a sender looking human and trusted.

Throttling works hand in hand with inbox rotation and warm-up: each warmed inbox sends a modest daily quota, and the platform paces the sends across the pool and the clock. Removing throttling to send faster is a common rookie mistake that spikes spam placement, which is why disciplined programs treat slow, steady sending as a feature rather than a limitation.