Deliverability best practices

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You'll never land in spam

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Hey Emre,

It’s been 2 days since you signed up to lemwarm, and deliverability doesn’t stop here.

The way you manage your lead lists and send volume has a direct impact on whether you land in inbox or spam.

It’s often hard to know what “good” looks like, so here’s a short version of the best practices.

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1. Keep your data clean
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Validate every email before sending with our email verifier.

You'll need to keep your bounce rate under 3%, anything above 5% will trigger spam filters.

 Remove old, catch-all or no-reply emails regularly. They hurt your sender score fast.

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2. Control your volume
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Start slow. If your inbox is new, send 10–15 emails per day for the first week. (per email address)

* Add no more than 5 extra sends every 3–4 days. Stay consistent, sudden jumps in volume are a clear spam signal.
* After 3–4 weeks of clean activity, you can move to 20–25 emails per day safely.

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3. Monitor and rotate
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Check your performance daily.
Pause any inbox with open rates below 30% or bounce rates above 2%.

Rest your domains 1–2 days a week once you reach steady volume.

Keep a 20% buffer of warmed inboxes ready so you can rotate without losing sending capacity.

Not sure about your setup? lemcoach ( https://www.lemlist.com/lemcoach?utm_campaign=%5BEMAIL%5D+Onboarding+-+lemwarm&utm_content=Email+2&utm_medium=email&utm_source=transactional ) is our team giving you clear, actionable guidance to get your campaigns working.

lemlist team,

Accession

nse/lemwarm/2026-10-21/4740

From

The lemwarm team · hello@lemwarm.com

Sent

21 October 2026 · 23:00 UTC