Writing compelling cold emails is hard.

Since you don’t have an existing relationship with your recipients, your email copy needs to stand out in their inbox.

Instead of staring at a blank page when setting up your cold email campaigns, beat writer’s block by letting AI create a cold email campaign for you.

Try lemlist's free cold email generator. It uses AI to make the cold email writing process faster and easier.

*If you don’t know what an ICP is or have yet to create one, we recommend you use our Buyer persona generator to develop one quickly.

Here’s a buyer persona created by the Buyer persona generator:

1 ⏱️ Save time and effort: The cold email generator will create a 3-email campaign for you in mere minutes. Although some edits may be necessary, it will free up a good chunk of your time to focus on other aspects of your business.
2 🔁 Keep your messaging consistent: By sharing your ICP with the tool, it creates three messages with the same brand voice while maintaining a professional tone
3 🎯 Tailor your messaging to your audience: While the cold email generator can’t personalize the messages for each of your leads (you need lemlist for that), it does adjust the messaging based on your audience.
4 💡 Use insights of over 400 million cold emails: The Cold email generator uses data-driven insights to craft emails that are more likely to convert leads into customers.
5 ⚠️ Avoid common cold email mistakes: We’ve programmed the AI to avoid spam triggers and follow cold email’s best practices.

The Cold email generator helps you get more replies by writing emails of the perfect length.

The optimal cold email length is about 120 words.

Among millions of campaigns analyzed, this word count yielded the highest average rate of meetings booked, around 50%.

But your emails don’t have to be exactly 120 words long, of course. The sweet spot is 75-125 words.*

This range gets 5-15% higher reply rates than longer or shorter emails.

How you structure your email also impacts your response rates.

Your recipient is inevitably skimming their inbox. Sending long paragraphs makes it harder for them to read quickly, even if you've optimized the number of words. And if they have to put work into reading your email, they won't reply.

A good way to measure readability is by the number of lines. According to another study, emails with about 20 lines, including line breaks, have the best click-through rates.

*To check the word count of your email, use lemlist’s Email size checker.

When to write longer emails
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‍Writing 120-word emails is a proven way to get more replies, but you don't have to stick with it throughout your campaign.

As you follow up with your prospects, you should write longer emails.

Follow-up emails typically need more context as your prospect may need to remember your first message.

You may need to add some extra information so your prospects understand your request.

It's not just the length of the emails that matters, but also when you send them.

So, we pulled up our sleeves and conducted a study. 💪

Traditionally, open rate has been the go-to metric for determining the best time to send emails.

Unfortunately, open rates are not reliable anymore.

So we turned to reply rate and tried to answer the question: “What’s the best time to send emails to maximize replies?”

‍The answer? Monday morning between 5 and 8 AM.

This early-morning window is also effective on Tuesday, Wednesday, and Thursday, though reply rates tend to dip on Fridays and drop significantly over the weekend.

While timing your emails can boost effectiveness somewhat, it's nothing compared to the impact of simply writing better emails.

Even perfect timing won't make a poorly written email perform well.

First, invest time in improving your campaigns. Our Cold email generator is a great starting point.

Then, when your campaigns are running smoothly, go for that extra edge by sending your emails at the optimal times—like early in the morning.

lemlist's free cold email generator helps you write perfect-length emails that will get your prospect's attention.

The next step is to use these emails in an outreach campaign.

Fortunately, you don't have to manage your campaigns manually.

lemlist can generate highly personalized multichannel campaigns without the need to be an outreach expert or have any prospecting experience.

‍Test it free for 14 days - no card required.