Changing email solution, new domain name or new IP address?
Before you launch large-scale campaigns, you need to go through one crucial step: the email warmup.
This gradual ramp-up phase helps you build a trusted sender reputation and boost your email deliverability. Let’s break down what warmup means, why you can’t skip it, and how to do it right.

- Why doing an email warmup is essential
- Key steps for a successful warmup strategy
- Best practices to avoid blocks and build your reputation
- 4-week ramp-up plan table
- In short: Warmup – why and how to improve your email deliverability
Why doing an email warmup is essential
A domain or IP with no history might look suspicious to mailbox providers. IP or domain warmup means gradually sending emails over time to gain trust. This phase helps you:
- Avoid blocks and spam folder issues
- Warm up your email address in the eyes of ISPs
- Monitor performance and fix potential issues
- Establish a strong, lasting email sender reputation
Key steps for a successful warmup strategy
- Start with an engaged list: send to your most active contacts first
- Segment your list to adjust volume based on response
- Create a warmup email plan over several weeks
- Track open rates, clicks, bounces, and spam complaints
- Adjust your emailing ramp-up based on results
Best practices to avoid blocks and build your reputation
- Use simple and tested content to start
- Avoid attachments, suspicious links, or heavy visuals
- Authenticate your domain with SPF, DKIM, and DMARC
- Keep a consistent sending schedule
- Never force sends to inactive addresses
4-week ramp-up plan table
Week | Recommended Volume | Target Audience | Goal |
---|---|---|---|
Week 1 | 100 – 500 emails/day | Highly engaged users | Start building your reputation |
Week 2 | 1,000 – 3,000/day | Recently active contacts | Stabilize performance indicators |
Week 3 | 5,000 – 10,000/day | Wider active segments | Gradually increase reach |
Week 4 | Up to 20,000/day | Validated larger base | Scale fully |
No time to read it all? Here's the summary.
In short: Warmup – why and how to improve your email deliverability
- Email warmup means gradually sending emails to build a reliable sender reputation.
- It’s essential to boost deliverability and avoid blocks or spam filters.
- A solid warmup email plan starts with your most engaged contacts and increases volume weekly.
- Authenticating your domain (SPF, DKIM, DMARC) and monitoring engagement rates is key.
- With Mindbaz, you can implement an effective, secure warmup strategy tailored to your audience.
Why should you warm up your domain before sending email campaigns?
Because a domain or IP with no history may be flagged as suspicious by providers. Warmup helps build a strong reputation, avoid spam folders, and ensure better deliverability from the start.
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