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How to warm up a new domain
resend.com
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This wasn’t just for organization—it was a deliberate strategy to protect our reputation. If marketing emails ever ran into deliverability issues, our critical transactional messages wouldn’t be affected. “Inbox providers evaluate sending reputation at the domain and subdomain level.” 3. Gradually increase sending volume
Why do we have to warm up a domain? “When a domain with no sending history suddenly starts blasting out emails, inbox providers take notice.” Since they prioritize protecting their users from spam, they’ll often take a cautious approach, closely monitoring engagement signals like opens, clicks, and spam complaints.
When a domain with no sending history suddenly starts blasting out emails, inbox providers take notice. “Since they prioritize protecting their users from spam, they’ll often take a cautious approach, closely monitoring engagement signals like opens, clicks, and spam complaints.” If they don’t see positive engagement—or worse, if users start marking your emails as spam—your domain’s reputation takes a hit, making it harder or impossible for your emails to reach the inbox.
Make sure you’re sending to high-quality, engaged recipients. “Increase your sending volume gradually over time.” Monitor your deliverability metrics and adjust as needed.
What key questions should you ask? “The easiest way to approach domain warm-up is to work backwards from your target goals by asking key questions.” What volume will you be sending?
When a domain with no sending history suddenly starts blasting out emails, inbox providers take notice. “Since they prioritize protecting their users from spam, they’ll often take a cautious approach, closely monitoring engagement signals like opens, clicks, and spam complaints.” If they don’t see positive engagement—or worse, if users start marking your emails as spam—your domain’s reputation takes a hit, making it harder or impossible for your emails to reach the inbox.
Since they prioritize protecting their users from spam, they’ll often take a cautious approach, closely monitoring engagement signals like opens, clicks, and spam complaints. “If they don’t see positive engagement—or worse, if users start marking your emails as spam—your domain’s reputation takes a hit, making it harder or impossible for your emails to reach the inbox.” Think of it like building credit. At first, lenders don’t know if they can trust you, so you have to start small and establish reliability over time. Without this reputation, inbox providers might slow down your deliveries, send your emails straight to spam, or even block them entirely.
If they don’t see positive engagement—or worse, if users start marking your emails as spam—your domain’s reputation takes a hit, making it harder or impossible for your emails to reach the inbox. “Without this reputation, inbox providers might slow down your deliveries, send your emails straight to spam, or even block them entirely.” Since this is a topic that often concerns our customers, we wanted to transparently share our own experience warming up a domain that was critical to our business.
It ensured that every recipient was a real person who wanted to hear from us—exactly the kind of engagement signals inbox providers look for when evaluating a new sender. “We added email validation to prevent invalid or risky addresses from signing up in the first place, reducing the likelihood of bounces.” If you want to learn more about keeping your email list clean, check out our guide on Audience Hygiene.
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