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Deliverability and domain

How to warm up your email domain and follow sending best practices

A new domain starts warming up on its own once verified; for a domain you already used, turn it on in Settings › Email Services › Dedicated Domain & IP › Start Warmup. Send every day, only to contacts who opted in, with no volume spikes.

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Before you start

  • Warm-up only applies to dedicated sending domains that are already added and verified in the Elooo System email service.
  • Have a list of contacts who agreed to receive your emails (never purchased lists).
  • Make sure your emails include an unsubscribe link.
Where to find it

Settings › Email Services › Dedicated Domain & IP › Start Warmup

Step by step

Turn on warm-up

  1. New domain: you don't need to do anything. Warm-up starts automatically once the domain is created and verified.
  2. Domain you already used: open Settings › Email Services and the Dedicated Domain & IP tab.
  3. Choose the domain and click Start Warmup.
  4. The system reviews the domain's past sending activity and recommends the best starting stage.

How progression works

  1. Each stage has a daily sending limit. For example, stage 1 is 1,000 emails per day, stage 2 is 2,500 and stage 3 is 5,000; the last one (stage 15) reaches 250,000 per day.
  2. The domain only moves up a stage when it hits the full daily limit of its current stage.
  3. If you don't reach the limit on a given day, it stays at the same stage (no progress is lost).
  4. Reaching the limit doesn't block sending: it's simply what moves you to the next stage.
  5. Once it reaches stage 15, the domain shows a Warmup Complete label.

Best practices during and after warm-up

  1. Send every day, at steady volumes. Avoid going quiet for weeks and then sending everything at once.
  2. Only send to contacts who gave consent. If possible, use double opt-in (the contact fills in a form and confirms by email).
  3. Turn on email verification in Settings › Business Profile with the option Verify email address when the first email is sent to a new contact.
  4. Use a sender on the same domain as your sending domain (for example, you send through mail.yourbusiness.com and the sender is name@yourbusiness.com).
  5. Always include an unsubscribe link.
  6. Stop emailing people who haven't opened or clicked in weeks: send less often and, if they still don't engage, remove them from your list.
  7. Don't switch sending domains in the middle of a campaign.

Tips

  • Recommended cadence: new contacts can get daily emails for a short period; with no engagement after 1–2 weeks, switch to weekly; with no engagement after 2 months, stop.
  • If a domain already has a bad reputation, it's usually better to set up a new subdomain than to try to repair it.
  • Connecting your domain to Google Postmaster Tools lets you track reputation and complaint rates.

Common problems

  • The domain isn't moving up a stage → It only moves up when you send the full daily limit for the current stage. With lower volumes, it stays at the same stage.
  • I don't see the Start Warmup button → Check that the domain is Verified and that it's a dedicated domain. Shared domains don't go through warm-up.
  • Emails still go to spam during warm-up → Review your list (consent, inactive contacts), your sender and your content. See the article on emails going to spam.
  • I want to skip stages → That's not possible. Stages move up automatically based on daily sending volume.

Frequently asked questions

Will my contacts notice anything during warm-up?

No. Warm-up doesn't change how your emails look or how they're delivered.

If I skip a day of sending, do I go back to the start?

No. You simply stay at your current stage until you hit the daily limit again.

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