239+ Best B2B Sales Email Subject Lines [2021]

239+ Best B2B Sales Email Subject Lines [2021]

If you're looking to boost your email open rates and increase sales, your email subject line is the first (and most important) step in achieving those goals.

Did you know that 33% of email recipients open emails because of an engaging subject line?

That's why it's critical to craft a catchy email subject line that will get you the traffic and conversions you deserve.

We've put together a list of 239+ best b2b sales email subject lines [2021].

Some are proven examples from other successful campaigns, and some are creative ideas to inspire you.

Creative Email Subject Line Ideas

  • Introducing Dynamic Email Signature Marketing
  • “Let us discuss about [project, topic or idea]”
  • Make major lead gen gains with [company]
  • Where is the love?
  • A special life-time deal for {{leads_name}}
  • 3 secret {{toolsrelevanttoleadsstrategy}} to boost sales
  • Did this pass you by?
  • Are you a {{leads_position}}? Don’t miss this tool.
  • Should I stay or should I go?
  • Feeling [insert emotion]? Let me help
  • Quick question about analytics
  • Need to grow sales at {{leadscompanyname}}?
  • You are not alone.
  • {First Name}, I just missed you!
  • Congrats {First name}! Have you thought of {business value}?
  • Complete employee survey by COP
  • Are you ok?
  • One more sleep
  • I'd love your feedback on that meeting
  • X options to get started
  • Share our latest post
  • It's been great doing business with you!
  • {{yourcompanyname}} + {{leads_name}} = a safe road to success
  • I love everything in this email!
  • {First Name}, I love {favorite facebook group} too
  • Feeling blue? Like baby pandas?
  • 3 weekend ideas for you
  • Could [company] use a helping hand?
  • X ways we can help you with [issue they might have]
  • “[Name of the audience], I need your advice”
  • The Ultimate Email Marketing Tool
  • Want to improve {{company_name}}’s MRR by 50% in a month?
  • 1,000% reply rate growth: check out {{case_study}} to learn how you can improve your KPIs
  • Help grow [company] network tomorrow
  • Are you making these mistakes?
  • 7 tips to {{lead’s_goal}} in 2021
  • Feedback on draft two of [task]
  • Did you know this about {{leads_interest}}?
  • I had this idea since we last spoke
  • Getting started with [product/service]
  • Your business can prosper without your sales team
  • 5 rules good content marketers follow
  • Transform [company's] sales process overnight
  • Your savings can grow by 75% in just 6 months.
  • Your next steps are as follows
  • Forget everything you know about {{leadspainpoint}}
  • 10 reasons why our customers dig us
  • How are you dealing with {Pain Point}?
  • 10x [prospect's company]'s traction in 10 minutes
  • [First name], I think you'll find this useful
  • Just tried calling you.
  • Hello from the other side…
  • Interested in [related topic]?
  • One last quarter to go, on track to hit {specific target}?
  • {{leadscompanyname}} can sell even more with {{yourcompanyname}}
  • One last try
  • Time for a quick touch base?
  • Hoping you can help.
  • I got the good stuff. Hit me up anytime.
  • [Mutual connection] recommended I get in touch
  • 15 minutes this week?
  • {{leads_name}}, will we meet this week?
  • Here's that information you requested
  • Hi [name], [question]?
  • I found you through [referral name]
  • Have you thought about [topic/product/service]?
  • Gain 5K leads with Mailtastic like [company]
  • We'd love your feedback
  • Do not open this email
  • Adieu.
  • An improved tool for {{leadscompanyname}}
  • We can help!
  • Oh! I forgot to mention.
  • Hello. My name’s Forrest, Forrest Gump. You want a chocolate?
  • Need help implementing {change due to a regulation}?
  • Things didn’t work out here. How about {playing favorite sport} next weekend?
  • {{leadspainpoint}}? 4 tools for a successful campaign
  • Buyer persona development is the top pain point for 47% of businesses
  • Know this about [topic of interest]?
  • Here’s what I’ll do
  • Thank you for subscribing
  • 8 proven tips to become the best in {{leadsniche}} as a {{companytype}} company
  • Your Netflix password?
  • Did you get what you were looking for?
  • Disappointed with {{leadspainpoint}}?
  • [First name], fix your data headache
  • Our next steps
  • What are your views on Crocs?
  • Idea for [topic the prospect cares about]
  • Would love to work with you again.
  • This is a sales email
  • Here's that info I promised you
  • Me (again)
  • {Prospect Name}, Thanks from {Your Company}.
  • “Hey [name of the audience], check this out”
  • With this tool, you will sell twice as much at half the cost
  • First steps to improving your [issue you're helping with]
  • [First name]: Your roadmap to a predictable marketing engine
  • {Prospect’s Name}, here is a personal note
  • HBO Go password?
  • X steps to achieve [goal they might have]
  • [Company], streamline your marketing spend
  • Stay ahead of your competitors with an automation tool
  • A minute of your time
  • Time to Part Ways
  • What’s new in V2?
  • {Prospect Name}, want to learn more about {solution}?
  • A [benefit] for [prospect's company]
  • Save 8 hours a week with an all-in-one automation tool
  • Your comment on {post} was insightful
  • Thank you for our [date] meeting
  • Would you like to try {{yourcompanyname}} for free?
  • 9 facts about what {{yourcompanyname}} can do for you
  • Urgent
  • {{leads_name}}, are you open to a 15-min call this week?
  • Only two weeks until {regulation law}.
  • Build your {team} like {favorite sports team}
  • Where shall we start?
  • Have you changed your mind about {{yourcompanyname}}?
  • Welcome to [brand] [insert an emoji]
  • [Prospect], I thought you might like these blogs
  • Goodbye, {Prospect’s Name}
  • Once upon a time at [company]...
  • Would love your take on this
  • Welcome! Follow us on social media
  • Get ready for {event}!
  • Moving On.
  • How to get started with our [name]
  • Sales Leader: The Answer to your Prayers
  • Jam-packed schedule? Let us help you out.
  • A fully refundable tool for {{leads_name}}
  • I thought about what you said
  • [Company], reduce your Ad spend by 60%
  • A 3-step plan for your busy week
  • Last chance: Sign up to [event]
  • By 2021, you will save $1,458.
  • 26 seconds (or less).
  • Are you ready for?
  • {First Name}, {Pain Point}
  • Follow us on Medium
  • “Have you solved your [problem/challenge] yet”
  • A coffee on me
  • We’ve met at {{conference_name}}
  • The key ingredient to success.
  • Request to connect.
  • A buyer persona image will make your business thrive
  • I can share the secret of our success to help {{company_name}} grow
  • New [department] strategy for [company name]
  • Can you point me in the right direction?
  • Next Step?
  • One Question. {question about favorite place}?
  • What would it take?
  • Don’t tell my boss
  • A scheduled call for {{leads_name}}
  • [First name], say goodbye to manual prospecting
  • Shall we meet at {{conference_name}}?
  • It’s not you, it’s me.
  • “[Name of the receiver], looking forward to seeing you at [event name]”
  • 10 mins — [date]?
  • [First name], drive webinar traffic with this quick-win
  • We know how you can connect with your leads
  • Double your lead base starting at $29
  • [First name], get yourself a pipeline that makes you smile!
  • We have [insert fact] in common ...
  • [First name], for you to enjoy at your leisure!
  • So nice to meet you, [Prospect]!
  • {First Name}, What went wrong?
  • Want to talk about {Topic}?
  • Are you ready?
  • {{leadscompanyname}} can benefit from a collaboration with {{your_company}}
  • {{yourcompanyname}} knows how you can benefit from automation
  • BTW, {Mutual connection} told me to get in touch with you
  • {Mutual Connection} asked me to get in touch with you.
  • How you doin?
  • Only few seats available for {conference/training classes/etc..}
  • Meeting invite: [Date]
  • Glad you’re back after a nice vacation ⛱️ Now let’s improve your {{KPI}}
  • A special 🎁 for {{leadscompanyname}}
  • [Company's] new customer promise
  • {{yourcompanyname}} knows 3 secrets to {{leadscompanyname}}’s growth
  • Every {{leadsjobposition}} needs this tool
  • Can I help you with {{leads_problem}}?
  • Hi, we're [company name]. Nice to meet you!
  • 3 steps to achieve {{leads_goal}}
  • [First name], check out our top 2020 product updates
  • Could you use one of these?
  • Answers to your questions
  • Ideas for {goal}
  • Increase conversions by 25%
  • Am I assuming correctly?
  • You can reach {{leads_goal}} in 3 steps
  • [Company name] + [Company name]: [Date]
  • X tips/ideas for [pain point]
  • Hey!
  • It's been a pleasure!
  • Key challenges in implementing {solution}.
  • Did you see that ludicrous display last night?
  • {First Name} x {Company Name}
  • Question about {Goal}
  • {{leadscompanyname}} & {{yourcompanyname}} promised call reminder
  • Permission to close your file?
  • {{testimonialscasestory}} were just like you. Then we improved their sales by 35%.
  • Resources to help with {pain point}
  • Disappointed with {{leadsproblem}}? {{testimonialsname}} had the same problem
  • Time to chat?
  • Steal our content strategy
  • You asked, we listened. Say hello to directs dials for Europe…
  • {Product Benefit}
  • If you change your mind about partnering with [your company]
  • [Mutual connection] told me to get in touch
  • Looking forward to meeting you at {Conference Name}, {First name}
  • {Prospect’s Name}, it’s finally nice to connect with {Common Ground}.
  • Loyalty program, what includes
  • Last chance to snag this deal!
  • Free [day of the week] at 1:45?
  • Thinking about {specific goal}?
  • Can you help me out?
  • How to overcome {{leadspainpoint}}
  • Increased ROI by 10x with prospecting - how?
  • Check it out, {First name}
  • Stop paying us!
  • Hello, {{yourleadsname}}, my old friend, I’ve come to talk with you again…
  • An important thing you need to know as a {{leads_position}}
  • Meeting invitation for {{leads_name}}
  • Question about [goal]
  • Hoping to help
  • The next steps
  • Requesting a meeting on [Day]
  • You are not the only one who wants to succeed
  • 9 myths about {{leads_interest}} dispelled
  • [First name], here's a little something to get you started…
  • How could [company] nurture leads better?
  • Your {{leads_niche}} service needs this
  • A terrific tool to help you with {{leadspainpoint}}
  • [mutual acquaintance] suggested we reach out!
  • [the e.e. cummings subject line]
  • A proven solution for {{leadspainpoint}}

GUIDE: How To Write A Great Subject Line

As we mentioned above, crafting a catchy subject line is critical to the performance of your email campaign.

While just a few words may seem like a small piece of your overall message, this is the first impression your audience will have before they decide whether to open your email.

If your subject line isn't engaging or appealing enough, there's a chance it could get buried in your reader's inbox.

Let's go over the proven tips on how to craft a subject line that boosts engagement:

What makes a great subject line?

First, let's discuss the fundamentals of creating a great subject line:

  • Spark interest and curiosity
  • A clear and urgent call to action
  • An offer/intriguing discount
  • Personalization (this can be done by sending out different versions of emails to subscribers based on their preferences)
  • Relevance - make sure your subject line covers the current trends and topics within your industry

5 Tips To Crafting a Great Subject Line

Now, let's dive into the specifics of how to create a great subject line for your next campaign:

1. Use a familiar sender name

Although this may seem obvious, it's a piece many marketers miss the ball on.

Your readers want to feel like your email is coming from a human and not a corporation or automated system.

One of the easiest and most effective ways to do this is by changing the sender's name to YOUR name or someone in the company that is well known.

Here's a great example of this from Marketing Examples


Pro Tip

Avoid the "no-reply" sender name at all costs. This makes your email feel unfamiliar, unapproachable, and less personable.

2. Keep your subject short and to the point

If your subject line is too long, it will get cut off, which could impact your reader's chances of opening your email.

The rule of thumb (for both mobile and desktop) is to keep your subject line under 50 characters.

3. Add personal touches to your subject line

If you have access to information about your subscriber (ie. name, location, etc), you can use this to benefit your subject line and catch your readers attention.

It's important not to go overboard here, but adding even the simplest touch such as their name can build trust and rapport.

Here's a great example of a personalized email + offer I received from BarkBox with my dog's name in the subject line:


4. Avoid making any false promises

Your subject line makes a commitment to your reader, so it's important you don't stretch the truth just to simply get more opens and clicks.

In the grand scheme of things, making false promises will end up hurting your open rate as your readers will lose trust in you.

5. Give them a sneak peek of what's inside

Telling your subscriber what is inside helps with open and clicks.

For example, if you're providing your reader with a free guide or e-book, consider making your subject line something along the lines of:

"Your FREE marketing e-book awaits!"


If you want your email campaign to perform well, it all starts with your subject line.

Think about the emails you receive in your inbox and what makes you click vs what gets buried - odds are, the same habits go for your customer.

We hope you enjoyed our guide + list of 239+ best b2b sales email subject lines [2021].

Pat Walls,  Founder of Starter Story

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