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lemlab
Make smart decisions faster

The newest outreach data insights backed by millions of successful lemlist campaigns directly in your pocket.

What is lemlab?

lemlab is the ultimate resource for data insights powered by lemlist data.
We analyzed millions of successful cold outreach campaigns and cold emails sent by lemlist users to give you data-driven and concrete results.
We found out what works so you can actually get customers and win more deals. Starting now.
25181M+
cold emails
251M+
outreach campaigns
2525K+
active users
1111K+
paying teams
How many cold email follow-ups should you send?  The data says 4-9
An analysis of the optimal number of cold email follow-ups that you should be sending to your prospects. Plus examples and templates...
lemlist team  | Jun 7, 2024
How to start an email: 25 high-conversion greetings & intro lines
Check out these 25 high-conversion email opening lines that will help you get more replies and book more meetings. Plus a data...
lemlist team  | Jun 8, 2024
B2B Cold Email Subject Lines that convert (data+examples)
The 6 elements of subject lines that convert, based on analysis of millions of cold outreach campaigns. Plus 10 proven successful B2B
lemlist team  | Jun 9, 2024

Proven sales insights
backed by lemlist data

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What 182 Million Cold Emails Taught Us: Key Insights You Need to Know
We analyzed all the data from almost 182 million cold emails sent by lemlist users, and we determined what actually works in your outreach.
Liucija Adomaite
July 5, 2024

Get more actionable
outreach tips on our blog

Cold Emailing
lemlab

How to start a professional email: 25 high-conversion greetings & intro lines

Check out these 25 high-conversion email opening lines that will help you get more replies and book more meetings. Plus a data analysis of the best ways to start an email.
lemlist team
Sep 6, 2024
Cold Emailing
lemlab

B2B Cold Email Subject Lines that convert (data+examples)

The 6 elements of subject lines that convert, based on analysis of millions of cold outreach campaigns. Plus 10 proven successful B2B cold email subject lines.
lemlist team
Sep 6, 2024
Cold Emailing
lemlab

Call-to-action in emails: data-driven tips & examples that convert

Bad CTAs make users stall on buying a product or signing up for a service. Learn to write a perfect CTA and get examples to tell your user exactly what to do.
lemlist team
Aug 27, 2024
Cold Emailing
lemlab

Use data to optimize your cold email length and get more replies

Discover the ideal cold email length to boost reply rates and book more meetings. Get tips based on in-depth analysis of millions of outreach campaigns.
lemlist team
Jul 25, 2024
Cold Emailing
lemlab

Write an effective cold email signature in 5 steps

Get 5 actionable steps to writing cold email signatures that catch the attention and push your prospects down the sales funnel.
Tony Do
Jul 25, 2024
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