Implementing a proper strategy to warm up a new subdomain is essential when sending emails from a new domain. Start with a small volume of emails and gradually increase the number over time to build a strong sender reputation. Continuously monitor key metrics such as open rates, click-through rates, and bounce rates to assess performance and adjust your warm-up strategy as needed.
To successfully warm up a new subdomain and maintain a positive sender reputation with email providers, follow this approach:
- Start with a low volume: Begin by sending 1,000 to 5,000 emails per day for the first 3 days.
- Gradually increase: Double the volume every few days while closely monitoring your metrics.
- Days 4 to 7: Increase to 10,000 – 15,000 emails/day.
- Week 2: Scale up to 25,000 – 50,000 emails/day.
- Focus on engagement: In the early stages, prioritize sending to your most active users.
Additionally, after moving to a new domain, it’s important to properly configure your SPF, DKIM, and DMARC records for improved email deliverability. Be sure to verify your sender domain in your SMTP provider. For guidance, you can follow this blog guides:
- Email Sender Feature for MailBluster: What’s New?
- How to Connect MailBluster with Postmark, Mailgun & SMTP2GO
For more detailed guidance, check out these resources: