Free tool · No account · Consultant-grade plan
Warmup Plan Builder — a real ramp calendar, not a guess.
Enter your domain and a few details about your sending setup. We check your domain's age, DNS authentication, and blacklist status, then combine it with your IP setup, audience, and list health to build a day-by-day warmup calendar — with the exact metrics to watch before moving to the next day's volume.
- Domain age & DNS auth
- Blacklist status
- Shared vs dedicated IPs
- B2B / B2C audience
- List size & activity
- Content template count
A plan is a snapshot. Warmup is a process.
Brain tracks every day against this plan.
This calendar tells you what to send today. InboxStack Brain watches your actual complaint rate, bounce rate, and inbox placement every day and tells you whether to advance, hold, or pull back — automatically.