How long should a cold email be, according to Lavender?
25 to 50 words for a first cold email, according to Lavender, which sells an AI email coach for sales teams. In Data says: The Shorter, the Better for Your Cold Email (Will Allred, 8 January 2023), Lavender says: "Our data shows that the optimal cold email length is between 25 and 50 words." The same post notes a peak around 225 words, which it still calls sub-optimal compared with 25 to 50.
Lavender's other pages repeat the range with different numbers attached, and only the 2026 benchmark says how many emails it covers and when the data was pulled. Every figure below is Lavender's own data:
| Lavender page (date shown) | What it says about length | Sample size given |
|---|---|---|
| Data says: The Shorter, the Better (8 Jan 2023) | 25 to 50 words is optimal; a peak near 225 words is still sub-optimal | None; the chart says it draws on Lavender's entire dataset |
| Cold Email 101 (23 Mar 2023) | Under 75 words is best; aim for 25 to 50 | None |
| 9 Common Sales Email Mistakes (21 Apr 2023) | Aim for 25 to 75 words, not counting the subject line | None |
| Exercises to Fix Your Email Complexity and Length Problems (19 Feb 2026) | A 25 to 50-word email should see 67% more replies than a 125-word one | Millions of emails, no exact count |
| Lavender: Best Practices (19 Feb 2026) | Emails of 0 to 50 words get 23% more replies | Its dataset, no count |
| Benchmark guides for marketing, technical and operations buyers (10, 17 and 30 Mar 2026) | For executives: don't write more than 100 words | Guides drawn from the 231,818-email benchmark |
The 2026 department guides show what Lavender treats as good in practice. The example emails it annotates for executives run 91 words (marketing), 86 (operations) and 64 (technical). The examples for individual contributors run 47 to 57 words, the longest being the one to finance. Going by Lavender's own guides: 25 to 50 words for most first emails, and no more than 100 for an executive.
Why does Lavender say shorter emails get more replies?
Because readers skim. Lavender's Cold Email 101 guide and its exercises page put the average time someone spends reading an email at 11 seconds. A March 2025 post, Cold Email Wizardry 101, puts it at nine seconds, which it says is just enough to read 37.5 words, and says most emails are deleted within three seconds.
The 2023 length post also deals with a counterpoint Lavender says it is asked about a lot: Gong data which, as Lavender describes it, showed that follow-up sales emails with four or more sentences got 15 times more meetings than follow-ups with three or fewer. Lavender's reading is that the finding covers follow-ups, which need context because prospects aren't thinking about you; for openers, its own data still favours short. Its formula for that context is an observation plus an insight or problem, which you can reuse in the first email and in every follow-up. Our follow-up email templates are built the same way.
What reading level should a cold email be written at?
Third to fifth grade, by Lavender's data. Cold Email 101 (Chelsea Castle, 23 March 2023) says 70% of cold emails are written at or beyond a 10th-grade reading level, and that writing at a 3rd to 5th-grade level gets 67% more replies. Lavender's The One-Idea Rule (Will Allred, 10 May 2023) gives the same range with more than 67% more replies, and explains that reading level is calculated by counting syllables: more syllables in a sentence scores as more complicated.
The Best Practices help page uses a wider band. It says emails at 3rd to 7th-grade clarity get 1.66 times more replies, and emails with no long sentences get 1.57 times more. Neither figure comes with a sample size.
Four of the six exercises on Lavender's exercises page:
- The tweet test. Fit the email into a tweet's 280 characters, which forces you to rank what is essential.
- No-comma days. A comma combines ideas, and each sentence should carry one idea.
- Word bans. Ban long words you use out of habit, such as flexibility, platform or integrations.
- Quarantine big words. When you need a long word, give it a short sentence of its own.
Does a phone-first layout get more replies?
Lavender's data says yes. Its latest benchmark, written up by Will Allred on 23 February 2026, covers 231,818 cold emails across about 50,000 inboxes. The report page says they are the most recent emails analysed as of 4 February 2026, from inboxes connected to Lavender's Email Coach, and that replies counted include positive and negative ones but exclude out-of-office and bounce notices. On formatting, the takeaways post says: "we love clean, mobile-friendly emails. It produces 83% more replies on average." It puts this largely down to an email's first impression being 8 times more likely to happen on mobile.
Three caveats, based on Lavender's own pages:
- The post does not define mobile-friendly or say what the 83% is measured against.
- The same figure appears in older posts. Cold Email 101 gave 83% more replies for short, mobile-optimised emails in March 2023, and the March 2025 Wizardry post gave it for emails without big paragraphs. The Best Practices help page gives a different number: 24% more replies for mobile-optimised emails.
- It matters more for some buyers. The 2026 post says formatting had more impact on emails to sales, product, marketing, operations, individual contributors and frontline managers, and less measurable impact on engineering, research, facilities, finance, legal, HR and PR.
Lavender's layout rules, gathered from three of its pages:
| Layout point | Lavender's guidance | Page |
|---|---|---|
| White space | Plenty, with a double line break after each paragraph | Best Practices |
| Paragraph length | No paragraph longer than four lines in its mobile editor | Best Practices |
| Sentences | One-line sentences, or paragraphs of one to two sentences | Cold Email 101 |
| Line wrap | One desktop line in Outlook or Gmail becomes two to four lines on a phone | Cold Email 101 |
| Overall length | Short enough to read on a phone without scrolling | Mobile Minded |
A phone-first rewrite in under 50 words
The emails below are made up for this post: a founder selling an invoice-reminder tool to a design agency. They are labelled examples; neither is a real email from a real company. The rewrite uses Lavender's context formula (an observation plus a problem), one idea per line and a one-line ask.
What changed:
- Length. From 133 words to 41, inside Lavender's 25 to 50.
- Opening. The pleasantry and the self-introduction are gone. The first line is about Priya.
- Product. Two short sentences on what the tool does. Lavender's 2023 post on curiosity says a reader needs no more than your six-second answer to what it is.
- Ask. A 30-minute call became a three-word question.
- Layout. Every paragraph is one sentence or two, with a blank line between, so nothing turns into a wall of text on a phone.
How to cut your cold email to 50 words this week
Cut it in five passes, then test it against the email you send now.
Count the words
Paste your current first email into a word counter. If it is over 75, cut; Lavender's 2023 guides put the target at 25 to 50 and the ceiling at 75.
Keep one idea
Write the observation and the problem in one sentence each, then one line on what you do, then the ask. Delete everything else.
Send it to yourself
Read it on your phone. Lavender's Mobile Matters post (1 January 2023) says Lavender saw the best reps writing emails and sending them to themselves first as a gut check. Break any paragraph longer than four lines.
Check the reading level
Run the email through any readability checker and aim for Lavender's 3rd to 5th grade. Swap long words for short ones and split long sentences.
Test it against your current email
Send each version to a matched half of the same list over two weeks and compare replies per person emailed. Our cold email templates are written short if you want a starting point.
If you send with Siela's AI SDR, the first email is your own template with each person's name, company and title filled in, sent only to verified, deliverable work emails, up to 150 a day per Gmail mailbox. A 50-word template is what goes out.
Frequently asked questions
Is a 50-word cold email too short?
Not by Lavender's data, which puts the best length at 25 to 50 words for a first cold email. Lavender's 2026 department guides annotate example emails of 47, 48 and 57 words to individual contributors, and its 2023 chart shows a later peak around 225 words that it still calls sub-optimal. Executives get a little more room: Lavender's guides for marketing, operations and technical executives set a 100-word limit.
How long should a cold email follow-up be?
It can be longer than the opener. Lavender's 2023 length post discusses Gong data which, as Lavender describes it, showed follow-ups with four or more sentences got 15 times more meetings than shorter ones, and argues follow-ups need context because prospects aren't thinking about you. Lavender suggests restating your observation and the problem it points to, so the reader knows why you are writing again.
What reading level should a cold email be written at?
Lavender's data favours a 3rd to 5th-grade reading level, which its March 2023 Cold Email 101 guide says gets 67% more replies, while 70% of cold emails are written at or beyond 10th grade. Its Best Practices page uses a wider band, saying 3rd to 7th-grade emails get 1.66 times more replies. Reading level is scored from syllables, so short words and short sentences bring it down.
How long should a paragraph be in a cold email read on a phone?
Lavender's Best Practices page says no paragraph should run longer than four lines in its mobile editor, with a double line break after each paragraph. Its Cold Email 101 guide suggests one-line sentences or paragraphs of one or two sentences, and notes that a single desktop line in Outlook or Gmail becomes two to four lines on a phone.
Where does the 83% mobile reply figure come from?
From Lavender, the sales email coaching company. Its February 2026 benchmark post, covering 231,818 cold emails, says clean, mobile-friendly emails get 83% more replies on average, without saying what that is measured against. The same figure appears in Lavender posts from 2023 and 2025, and a Lavender help page gives 24% instead. All of it is Lavender's own platform data.
Sources
- Lavender: Data says: The Shorter, the Better for Your Cold Email (Will Allred) (published 8 Jan 2023)
- Lavender: 5 Takeaways from Our Latest Cold Email Benchmark Report (Will Allred) (published 23 Feb 2026)
- Lavender: The Cold Email Benchmark Report (Will Allred) (updated 30 Mar 2026; sample as of 4 Feb 2026)
- Lavender: Cold Email 101 (Chelsea Castle) (published 23 Mar 2023)
- Lavender: 9 Common Sales Email Mistakes (Chelsea Castle) (published 21 Apr 2023)
- Lavender: Exercises to Fix Your Email Complexity & Length Problems (dated 19 Feb 2026)
- Lavender: Best Practices (dated 19 Feb 2026)
- Lavender: Mobile Minded (dated 19 Feb 2026)
- Lavender: Benchmark Learnings, marketing (Will Allred) (published 10 Mar 2026)
- Lavender: Benchmark Learnings, technical buyers (Will Allred) (published 17 Mar 2026)
- Lavender: Benchmark Learnings, finance (Will Allred) (published 24 Mar 2026)
- Lavender: Benchmark Learnings, operations (Will Allred) (published 30 Mar 2026)
- Lavender: Cold Email Wizardry 101 (Will Allred) (published 27 Mar 2025)
- Lavender: The One-Idea Rule (Will Allred) (published 10 May 2023)
- Lavender: Why Mobile Optimization Matters for Your Sales Emails (Will Allred) (published 1 Jan 2023)
- Lavender: Cold Emails Shouldn't Inform. They Should Build Curiosity. (Will Allred) (published 7 Feb 2023)