Keeping Emails Out of Spam
A new sending domain has no reputation yet, so mail servers may treat its emails with suspicion. Warming up your domain builds that reputation gradually, which helps your emails reach the inbox instead of the spam folder.
Before you start, make sure your domain is Verified, see Custom Domain for SMTP.
Warming Up Your Domain
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Start with one email address. Focus the warm-up on a single address (e.g.
noreply@yourdomain.com) first. Don't add other addresses until the warm-up has run for about one month. -
Increase sending volume gradually. Avoid sending a large number of emails at the start. Begin with a small volume and raise it steadily, for example:
- Day 1: send 50 emails.
- Day 2: send 100 emails.
- Day 3: send 500 emails.
Keep increasing the volume consistently over roughly 30 days.
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Send manual emails to colleagues first. Before sending to a wider audience, email your colleagues or internal team manually. Ask them to mark the email as Not spam if it lands in the spam folder, which helps train your domain's reputation.
Notes
- Check the Activity Log tab regularly to confirm your emails are being delivered, see Monitor Email Activity.
- Sending from a domain that is not verified makes emails much more likely to be rejected or marked as spam.
- Direct link: Email SMTP