- / Email domain warmup calculator
Email domain warmup calculator
Set a target daily volume and warmup pace to generate a day-by-day ramp for a new domain or IP. Export the schedule as CSV and compare each day to your goal with interactive progress bars.
Maximum emails to send per day after you finish ramping up. The table and progress bars compare each day to this number.
Each day's volume grows by this percentage until you reach your target daily volume, then holds steady.
How this schedule works
New domains and IPs start with low trust at mailbox providers. A warmup plan sends gradually increasing volume so you can earn reputation before scaling to full production traffic.
Send first to engaged recipients (for example recent openers or clickers), watch bounces and complaints daily, and slow down if metrics worsen. Verify SPF, DKIM, and DMARC before you send production mail from a new domain.
Days to reach target
22
Total emails sent
431,304
Warmup schedule
| Day | Daily emails | Progress | Cumulative emails |
|---|---|---|---|
Day 1 | 50 | 50 | |
Day 2 | 65 | 115 | |
Day 3 | 85 | 200 | |
Day 4 | 111 | 311 | |
Day 5 | 144 | 455 | |
Day 6 | 187 | 642 | |
Day 7 | 243 | 885 | |
Day 8 | 316 | 1,201 | |
Day 9 | 411 | 1,612 | |
Day 10 | 534 | 2,146 | |
Day 11 | 694 | 2,840 | |
Day 12 | 902 | 3,742 | |
Day 13 | 1,173 | 4,915 | |
Day 14 | 1,525 | 6,440 | |
Day 15 | 1,983 | 8,423 | |
Day 16 | 2,578 | 11,001 | |
Day 17 | 3,351 | 14,352 | |
Day 18 | 4,356 | 18,708 | |
Day 19 | 5,663 | 24,371 | |
Day 20 | 7,362 | 31,733 | |
Day 21 | 9,571 | 41,304 | |
Day 22 Target reached | 10,000 | 51,304 |
Warmup practices
- Send to engaged subscribers first (recent openers or clickers).
- Monitor bounce rate daily and pause or cut volume if it stays above 2%.
- Check spam placement with seed inboxes while you ramp.
- Keep send times and volume changes steady from day to day.
Why warmup matters
Mailbox providers treat a sudden spike from a new domain or IP as risky. A measured ramp gives you room to prove good engagement and list hygiene before you run at full daily volume.
Browse more tools
Campaign metrics calculator
Enter send, delivery, and engagement counts to calculate deliverability, open rate, click-through rate, and other campaign metrics.
SPF record checker
Check SPF records for any domain to verify authorized email senders and troubleshoot deliverability.
DKIM record checker
Look up DKIM records to verify email signing configuration for any domain and selector.
