New inboxes earn trust slowly. Enter your target volume and get the week-by-week ramp that gets there without tripping alarms.
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Inbox providers score consistency and trajectory, not just volume. Doubling-ish each week mimics how a real team's mail grows, keeps engagement rates high while volumes are small, and gives you clean checkpoints: if placement dips at 15 a day, you want to learn that before you are at 30. Rushing warmup to save two weeks is how teams burn domains that took two months to build, which lands them back at the old playbook.
Tools check the plumbing. The message is what your market answers. Get your TAM mapped, your ICP broken down and 5 angles written for your buyers, free.