Foundation (days 1–14)
Authenticate DNS, start automated warmup, keep real cold volume near zero. Goal: look human to ESPs with positive engagement patterns.
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Email Warmup Calculator
Brand-new domains can't blast. We compute a day-by-day ramp using the industry-standard 30% growth rule, show you the total warmup window, and tell you when to switch from automated warmup tools to real cold sending.
Step 01
Warmup parameters
Per-inbox values. Multiply by your inbox count for total daily sends.
Why 30% / day?
The consensus rate that lets ESPs build a healthy reputation without tripping rate limits or filters. Faster ramps consistently get blocked.
Step 02
Day-by-day plan
From Mon, Apr 27 → Tue, May 5
Total days
9
Until you hit 50 / day
Total sends
194
Across the warmup window
Switch off warmup
—
Below the threshold
Schedule
Day 1 → target| Day | Date | Sends | % of target |
|---|---|---|---|
| 01 | Mon, Apr 27 | 5 | 10% |
| 02 | Tue, Apr 28 | 7 | 14% |
| 03 | Wed, Apr 29 | 10 | 20% |
| 04 | Thu, Apr 30 | 13 | 26% |
| 05 | Fri, May 1 | 17 | 34% |
| 06 | Sat, May 2 | 23 | 46% |
| 07 | Sun, May 3 | 30 | 60% |
| 08 | Mon, May 4 | 39 | 78% |
| 09 | Tue, May 5 | 50 | 100%At target |
Numbers are per inbox — multiply by inbox count for total volume.
Why warmup exists
New domains do not get the benefit of the doubt
Receivers treat brand-new sending domains as risky until they see consistent, human-looking behavior. Warmup is how you earn that reputation without nuking deliverability on week one. Verify authentication with the Domain Health Checker before you start the calendar.
The ramp
30% day-over-day — the consensus growth rule
Aggressive enough to reach useful volume in weeks, not quarters — conservative enough to avoid looking like a botnet. Numbers are per-inbox; multiply by parallel inboxes for total domain volume.
Ramp (growth rule)
Increase daily sends ~30% day-over-day from a low base (we start around 5/day). Jumping too fast is how new domains get throttled.
Graduate to cold
At the milestone, shift from warmup-tool traffic to real ICP sends — still restrained. Keep warmup light as a reputation buffer if needed.
Common mistakes
How teams burn domains in the first month
Mistake
Blasting 200/day on day three
Do this instead
Follow the ramp; protect the domain for months of pipeline
Mistake
Warming from the primary brand domain
Do this instead
Dedicated cold domains — check them in the Domain Health Checker
Mistake
Skipping SPF/DKIM/DMARC until “later”
Do this instead
Authenticate first — warmup without identity is theater
Warmup is a calendar. Reputation is the asset.
Follow the day-by-day plan, keep complaint rates near zero, and do not confuse “tool says warmed” with “ready for aggressive cold.” When you graduate, keep copy clean and lists tight — see the cold email playbook.
How it works
Three steps. No signup. No waiting.
- Step 01
Set your target volume
Tell us how many cold sends per day per inbox you eventually want to hit.
- Step 02
Pick your start date
We compute the calendar — including weekends, since deliverability tools warm 7 days a week.
- Step 03
Follow the ramp
Day-by-day numbers, with a milestone for when you can switch off the warmup tool and run real campaigns.
Frequently asked
Quick answers, no fluff.
- What growth curve do you use?
- About 30% day-over-day from a low base (we start near 5 sends/day). It is the common ramp that builds reputation without looking like a sudden blast.
- Should I warm multiple inboxes in parallel?
- Yes — many teams warm 3–5 inboxes per domain. Calculator numbers are per-inbox; multiply for total daily volume across the domain.
- Do I still need a warmup tool?
- Especially in the first two weeks. Warmup tools create engagement patterns ESPs recognize. At the milestone, shift toward real ICP sends and keep warmup light if you need a buffer.
- Can I skip warmup if SPF/DKIM/DMARC pass?
- Authentication is required, not sufficient. A perfect DNS score on a brand-new domain still needs a ramp. Check DNS first, then follow the calendar.
- Should I warm on weekends?
- Most automated warmup tools run daily. This calendar includes weekends for that reason. Real cold sends to business buyers can favor weekdays once you graduate.
- What kills a warmup faster than anything?
- Sudden volume spikes, spammy copy, bad lists, and high complaint rates. Protect the domain like an asset — you are buying future inbox placement.
- When do I turn warmup off completely?
- After you hit target daily volume with stable placement and clean metrics. Some teams keep a low warmup trickle forever; others stop once cold volume is healthy. Watch bounces and spam complaints either way.
Want domains purchased, authenticated, and warmed for you?
Free outreach audit — we review your current domains and map a safe ramp into live campaigns.
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