Skip to main content

Top B2B Cold Email Subject Lines

By October 2, 2018June 24th, 2019Outreach

Subject Line Best Practices

How can you ensure your email stands out? You need to pique their interest and convey the value of opening and reading the email. Here are some guidelines for crafting subject lines your prospects will be compelled to open.

  • Stay simple – Be specific and clear about what you are offering or asking. The best subject lines describe the email without sounding too much like and advertisement.
  • Keep it short – Shorter subject lines are easier to read and have a lower risk of them getting cut in the midway. In a regular inbox you can see about 60 characters in a subject line and for mobiles, it’s even less, say about 25-30 characters. Emails with less than 30 characters have higher open rate.
  • Be focused – A cold sales email should have a specific focus and so should the subject line. Place audience-specific keywords in the beginning of the subject line.

Use special characters – subject lines tend to be the same number of characters and text-heavy, making it difficult for your email to be found when the prospect is skimming their inbox. Numbers, punctuation and symbols in the subject line can stand out. However, too many special characters may cause the email to be mistaken for spam.

Want to discuss sales outreach? Request Info

  • Get personal– People like to feel special and personalizing the subject line will help the email stand out.  Add your prospect’s name into your subject line but don’t make it the first word. Mention things specific and personal to your prospect in the subject line —  company they work for, location, industry or specific role.
  • Make a connection – Referrals or recommendations are extremely powerful.  Naming a specific person or mutual acquaintance in the subject line establishes the connection and gives you instant credibility.  
  • Ask a question – Questions provoke answers, opens and replies (as long as the questions are open-ended). People like to offer their opinion and will open the email to see if they can answer the question.
  • Offer benefits – Provide a clear and compelling benefit to the recipient. Answer the question, “What’s in it for me

Top 15 Cold Email Subject Lines to Boost Open Rates

      1. [Mutual connection] recommended I get in touch
      2. Quick question
      3. Your yearly [X] target
      4. Busy? Let us take something off your plate
      5. Can I make your life X % easier?
      6. Increased profits for [company name]
      7. X tips/ideas for [pain point]
      8. Feeling [insert emotion]? Let me help
      9. The ultimate guide to [your service or product]
      10. Have you heard?
      11. [First name], what would you do with an extra $1,000?
      12. How to leverage [your service or product] in your business
      13. Discover why 100,000+ customers are using [your service or product]
      14. Question about [goal]
      15. End your month (or quarter) strong


Without a subject line that stands out in a cluttered inbox, you’ll miss out on significant opportunities for engagement with your leads. A cold email subject line should present immediate value to your prospect.  Using the 15 top B2B subject lines in this article will increase the chances your cold email will be opened and read.

Kendall Davis

Author Kendall Davis

More posts by Kendall Davis

Leave a Reply

We use cookies to give you the best online experience. By agreeing you accept the use of cookies in accordance with our cookie policy.

Privacy Settings saved!
Privacy Settings

When you visit any web site, it may store or retrieve information on your browser, mostly in the form of cookies. Control your personal Cookie Services here.

These are the cookies and pixels we use on our site.

Decline all Services
Accept all Services