Guide · the domain ramp
A new domain has no history, and receivers decide how much of it to trust from what they have seen. CraftNudge raises the domain's daily number once a week, and only when the week before went well.
A schedule is a list of daily numbers, one per week: 5, 10, 12, 15, 20, 25 by default. Week one the domain may send five a day, week two ten, and so on. The last number holds from then on, so a domain on the default schedule settles at 25 a day in its sixth week and stays there until you change the schedule. You set the list once for the workspace and start the ramp per domain.
The only honest signal a warming domain gives you is its bounce rate, and a bounce rate over four sends means nothing. A week at five a day is about twenty five sends, which is enough to tell a clean week from a dirty one. Receivers work on the same kind of window: they judge a domain on what it has done recently, not on what it did in the last hour. Raising the number every day would outrun the evidence.
Once a week the worker looks at the domain's last seven days: how many sent, how many bounced, over every inbox on the domain. If the week was clean the domain moves to the next number. If it was not, the domain stays where it is and the page says why. A domain never moves up two steps at once, and it never moves up on its own between checks.
The default is conservative on purpose. A domain that has sent cleanly for a year can start higher. A domain bought last week should not. Give the schedule as many weeks as you like, up to a thousand a day per step, and the same shape applies: one number per week, the last one holds.