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28 Best Cold Email Subject Lines [Free Generator]

Looking for the best cold email subject lines to get your emails opened? You have come to the right place! 

We have collected the best subject lines for cold emails.

Use our subject line generator:

  • Create subject lines that are all proven to work to get your emails opened
  • Fits any type of industry
  • 100% free to use and ungated (No email required)
  • Unlimited uses: Generate as many subject lines as you wish!

Cold emails can be a great way to engage in new business conversations. Let us help you create the best cold email subject lines, so you can unlock new business opportunities. 

Just fill in the blanks on the right sidebar and choose the one you like the most!



Check out our other 13 Email Subject Line Generators:

B2B Email Subject Lines // Cart Abandonment Email Subject Lines // Follow Up Email Subject Lines // Newsletter Email Subject Lines // Onboarding Email Subject Lines // Product Launch Email Subject Lines // Promotion Email Subject Lines // Re-Engagement Email Subject Lines // Sales Email Subject Lines // Urgent Email Subject Lines // Webinar Email Subject Lines // Welcome Email Subject Lines

Crack the code of cold emails

There is no relationship between your prospect and you when you send them cold emails. This means they are harder to get right, but it’s still possible.

When you are creating your cold email, you should keep these 5 things in mind…

  1. Make it personal - Understand who exactly you are sending this email to. Show them you have put in work to understand them. Make it clear why you are emailing them specifically and not someone else.
  2. Show who you are - You are the stranger reaching out, so you should let them know any form of credibility, status or authority that applies to your prospect. Tell them how important you are. If you don’t have the status, try to find something you have in common with the receiver.
  3. Give them something they want - People tend to focus on relieving pain rather than pleasure. Try to find the prospect’s biggest pain point and give them a solution. 
  4. Keep it short and easy - The longer an email is, the more likely it is the prospect loses interest. Make sure that your request is clear and doesn’t have any unnecessary information. Write the email like how you would talk to them if you met them in real life.
  5. Be thankful - You are essentially asking for a favor from someone you don’t know. Tell the prospect how grateful you are. It will improve the response rate if you are humble.

Keep these tips in mind when you are writing your cold email and you will have a great cold email for sure. 

But the most important part of your cold email is the subject line. If your email doesn’t get opened, it’s like you never sent it. 

There is an easy way to get your cold emails opened though...

How to write the best cold email subject lines 

But you still need to get your cold email opened... and the email subject line is the most influential part of your open rate. 

Your prospect is more than likely to receive many emails from different companies every day, so you need to stand out. And the only way to do that is in your subject line. 

If you want to write the best subject line for cold emails, you should remember these...

11 tips on writing cold email subject lines that get opened

  1. Make it personal by using a name from the salesperson, so it doesn’t look like it’s from a company. You can also use the name of the receiver to make it more personal. The prospect should feel you wrote this email just for them.
  2. Ask questions that make the receiver think. This will also spark curiosity within them. 
  3. Have the subject line be as specific as possible. 
  4. Try not to make it sound too much like a “marketing email”. 
  5. Deliver in your email what you said you were going to deliver in the subject line. 
  6. Create some urgency. You can trigger the prospect’s fear of missing out.
  7. Make sure the subject line is relevant to the prospect and their industry.
  8. Keep it short with less than 60 characters. You want your whole subject line shown on all devices.  
  9. Consider if the words you choose will be caught in a spam filter. Words such as “free”, “winner”, “Guarantee” and so on will negatively affect your open rate. 
  10. Don’t be bold using all caps (HELLO), too many exclamation points (!!!), or ellipsis (...)
  11. And last but not least. Never use clickbait!

Take all these tips into account when you are writing cold email subject lines. But, you might be left with the question...

How exactly? It’s hard. We know.

There is a way to make it easy, though...

Generate great subject lines in less than 34 seconds

Do you want to write the best cold email subject lines, but find it hard to come up with interesting ones? With our generators, you'll be able to create amazing subject lines instantly.

On Emaildrips, you can get free access to email subject line generators for any purpose. Whether it is sales emails, cart abandonment emails, newsletter emails, and many more. We divided the generator into different categories. Then you can find what subject line is the most relevant for the email you are writing. 

Do you want other ways to improve your email marketing? Our Convertscripts tool will help!

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