Email Warmup Calculator
Calculate an optimal email warmup schedule for new domains or IPs. Get a day-by-day sending plan to build sender reputation without triggering spam filters.
Plan your email warmup schedule for new domains or IPs
Emails per day after warmup
30% daily increase - balanced approach
Like this tool? Try Sequenzy for free
AI-powered email marketing with Stripe integration, automations, and built-in analytics.
13
Days to target
50
Starting volume
51,717
Total during warmup
Warmup Schedule
| Day | Daily Emails | Progress | Cumulative |
|---|---|---|---|
| Day 1 | 50 | 50 | |
| Day 2 | 65 | 115 | |
| Day 3 | 85 | 200 | |
| Day 4 | 110 | 310 | |
| Day 5 | 143 | 453 | |
| Day 6 | 186 | 639 | |
| Day 7 | 241 | 880 | |
| Day 8 | 314 | 1,194 | |
| Day 9 | 408 | 1,602 | |
| Day 10 | 530 | 2,132 | |
| Day 11 | 689 | 2,821 | |
| Day 12 | 896 | 3,717 | |
| Day 13Target reached | 1,000 | 4,717 | |
| Day 14 | 1,000 | 5,717 | |
| Day 15 | 1,000 | 6,717 | |
| Day 16 | 1,000 | 7,717 | |
| Day 17 | 1,000 | 8,717 | |
| Day 18 | 1,000 | 9,717 | |
| Day 19 | 1,000 | 10,717 | |
| Day 20 | 1,000 | 11,717 | |
| Day 21 | 1,000 | 12,717 | |
| Day 22 | 1,000 | 13,717 | |
| Day 23 | 1,000 | 14,717 | |
| Day 24 | 1,000 | 15,717 | |
| Day 25 | 1,000 | 16,717 | |
| Day 26 | 1,000 | 17,717 | |
| Day 27 | 1,000 | 18,717 | |
| Day 28 | 1,000 | 19,717 | |
| Day 29 | 1,000 | 20,717 | |
| Day 30 | 1,000 | 21,717 |
Showing first 30 days. Download CSV for full schedule.
Warmup Best Practices
- • Send to engaged subscribers first (recent openers)
- • Monitor bounce rates daily - pause if > 2%
- • Check spam folder placement with seed lists
- • Avoid cold outreach during warmup period
- • Maintain consistent sending times each day
Why warmup?
- New IPs/domains have no sending reputation
- ISPs flag sudden high volume as spam behavior
- Gradual increase builds trust with email providers
- Rushing warmup can permanently damage deliverability
About this tool
Email warmup is critical when starting with a new domain or IP address. This calculator creates a day-by-day plan to gradually increase sending volume while monitoring for issues. Before starting warmup, ensure your domain has proper SPF, DKIM, and DMARC authentication configured. As you execute your warmup plan, monitor your sender reputation and check for blacklist listings. Use campaign metrics to track bounce rates during the warmup period.
Frequently Asked Questions
More Free Tools
View all toolsFree Email Validator
Verify email addresses to reduce bounce rates and improve deliverability. Our tool checks syntax, domain validity, and MX records.
Email Blacklist Checker
Check if your domain or IP address is listed on major email blacklists (DNSBLs). Being blacklisted can severely impact your email deliverability and sender reputation.
Email Migration Checklist
Step-by-step interactive checklist for migrating between email marketing platforms. Covers pre-migration audit, data export, authentication setup, testing, and go-live monitoring across 6 phases.
Email Countdown Timer Generator
Create countdown timer HTML for your email campaigns. Choose from 3 styles, customize colors, and get email-compatible HTML. Includes guidance on making the timer live with image-based services.