Send emails that land in the inbox, not spam
lemwarm warms up your inbox across 20,000+ real domains, tracks your deliverability score, and flags issues before they hit your campaigns.
Start todayPoor open rates? No replies? Here is what is usually going wrong.
Broken tech setup: SPF, DKIM, DMARC, or MX records missing or misconfigured.
Spammy copy: Risky subject lines, too many links, or trigger words.
Irregular sending: Sudden volume spikes tell Gmail and Outlook you are a spammer.
Unverified list: Invalid addresses cause bounces and damage your reputation.
No monitoring: You find out you are in spam only when replies stop.
Meet 
the complete deliverability tool that helps you land in the inbox
Warm-up
Connect your inbox in one click. Warm up across 20,000+ healthy domains in 100+ countries. Real inboxes, real replies, no bots.
Monitor
Receive alerts on your deliverability score and detect spam risks that could impact your email campaigns, based on your sending behavior and content.
Boost deliverability
Daily tips on your content, sending, and setup. Detailed reports anytime. Hold a high score across every campaign.
Pick your plan and get started now
Monthly
QuarterlySave 10%
YearlySave 20%
Automatic email warm-up
Technical setup check
Deliverability reports
Human warm-up emails
Warm-up network of 20k+ healthy domains
Everything in Essential plan
Personalized warm-up emails
Warm-up your real email templates
Custom deliverability alerts & tips
Warm-up network tailored to your industry
Everything in Smart plan
Volume pricing
Priority support
Get lemwarm free with lemlist
lemlist is the all-in-one outreach platform for email, LinkedIn, calls, SMS and AI-personalized sequences. Every lemlist plan includes lemwarm, so your deliverability is covered from day one.
Learn more about lemlist success stories
Frequently asked questions
Deliverability decides if your emails land in the inbox or in spam. Without a tool, you only notice the problem when replies dry up.
lemwarm builds your reputation with email service providers, spots issues early, and tells you what to fix. More inbox, more replies.
lemwarm builds your reputation with email service providers, spots issues early, and tells you what to fix. More inbox, more replies.
lemwarm helps your emails reach the inbox, not the spam folder. It does three things:
- Warms up your inbox by exchanging safe, real emails with a network of 20,000+ real users.
- Checks your email setup so Gmail and Outlook trust you as a sender.
- Shows you a daily score so you know your emails are safe to send.
About 4 weeks of warm-up, then 2 more weeks before you start real campaigns.
After that, leave lemwarm running. If you stop, your reputation drops and emails go back to spam. Think of it as ongoing maintenance, not a one-time fix.
After that, leave lemwarm running. If you stop, your reputation drops and emails go back to spam. Think of it as ongoing maintenance, not a one-time fix.
Yes to both.
lemwarm connects with Gmail and Outlook in one click. Other providers like Zoho, FastMail, or Proton work too.
It uses a secure login, never reads your real emails, and never touches your contacts.
lemwarm connects with Gmail and Outlook in one click. Other providers like Zoho, FastMail, or Proton work too.
It uses a secure login, never reads your real emails, and never touches your contacts.
No. lemwarm is included free with every lemlist plan. If you send with lemlist, your inboxes are already being warmed.