How long should an email subject line be?

The optimal subject line length is 40–60 characters. This range displays fully on most desktop email clients and avoids truncation on mobile devices where space is limited.

How many words should a marketing email have?

Marketing emails with 50–125 words consistently show higher click-through rates. Keep your message focused: one key point, one clear call to action.

How long should a cold outreach email be?

Cold emails should be 75–150 words. Get to the point quickly, explain why you're reaching out, and make your ask or offer clear. Longer cold emails have much lower response rates.

What is the ideal email length for newsletters?

Newsletters typically perform well between 200 and 500 words, though some audiences engage with longer formats. Test your audience's preferences with short vs. long versions.

Is my email content stored when I use this tool?

No. All processing happens in your browser. Your email text is never sent to any server or stored anywhere.

Word Counter for Email

Check your email subject line length, body word count, and copy in real time. Write emails that get opened and read.

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Characters

Characters (no spaces)

Sentences

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Reading Time

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Why Email Length Matters

Email open rates are heavily influenced by subject line length. Subject lines between 40 and 60 characters tend to perform best across desktop and mobile clients. On mobile — where over 60% of emails are opened — subject lines get cut off after just 30–40 characters. For the email body, marketing research consistently shows that shorter emails (50–125 words) produce higher click-through rates than longer ones. Cold outreach emails perform best at 75–150 words. This tool helps you write subject lines and body copy that hit the sweet spot.

How to Check Your Email Length

Paste your email subject line or body copy into the box above. The character counter tells you immediately if your subject line is in the optimal 40–60 character range. The word counter helps you gauge body length against industry benchmarks.

Use Cases

Email Subject Lines

The sweet spot is 40–60 characters. Subject lines in this range avoid being truncated on desktop while staying readable on mobile where space is tighter.

Marketing Email Copy

Marketing emails with 50–125 words typically see the highest click-through rates. Short, focused messages outperform walls of text in almost every industry.

Cold Outreach Emails

Cold emails should be 75–150 words — long enough to explain your value, short enough to respect the recipient's time. Count your words before you send.

Newsletter Content

Newsletter lengths vary by audience, but 200–500 words is a solid benchmark. Check your word count here to keep newsletters digestible and on-brand.

Frequently Asked Questions

How long should an email subject line be?: The optimal subject line length is 40–60 characters. This range displays fully on most desktop email clients and avoids truncation on mobile devices where space is limited.
How many words should a marketing email have?: Marketing emails with 50–125 words consistently show higher click-through rates. Keep your message focused: one key point, one clear call to action.
How long should a cold outreach email be?: Cold emails should be 75–150 words. Get to the point quickly, explain why you're reaching out, and make your ask or offer clear. Longer cold emails have much lower response rates.
What is the ideal email length for newsletters?: Newsletters typically perform well between 200 and 500 words, though some audiences engage with longer formats. Test your audience's preferences with short vs. long versions.
Is my email content stored when I use this tool?: No. All processing happens in your browser. Your email text is never sent to any server or stored anywhere.