Daily Send Cap Calculator
Enter domain age, days since warmup started, and current daily volume. The tool returns the safe cap for today and the ramped cap for the next 7 days.
Applies the standard 2× weekly ramp formula (sender warmup industry default), capped by mailbox-provider per-day per-domain limits.
Planning a sender warmup. Deciding whether you can absorb a sudden 2× outbound push without burning reputation.
FAQ
Is the 2× weekly ramp safe at every starting volume?+
Below 5,000/day: yes. Between 5,000 and 50,000/day: drop to 1.5× weekly. Above 50,000/day: ramp by no more than 1.3× weekly and watch complaints obsessively.
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Articles, glossary entries, and other tools on the same topic.
You ran the math. Outsolvi makes it real.
Calculators tell you what the number should be. Outsolvi tells you what your number actually is — confidence-scored opens, real reply sentiment, live deal-level signal across Outlook and Gmail. From $7/user/mo yearly, 14-day free trial.
See it on your own inboxNate built Outsolvi after watching every email-tracking tool he had ever used lie to him about opens. Outsolvi runs Tier 1 to 5 confidence scoring on every open, native in Outlook and Gmail, so the number on the dashboard is one a rep can actually act on.
We update these pages when the underlying mechanics change — new mailbox-provider rules, new tracker behavior, new measurement gaps. The dates above are real revisions, not auto-touches.