Whether you run a product-based or service-based business, promotional email subject lines can be some of the trickiest to write. With high-tech spam filters, separate promotional email inboxes, and mandatory email marketing laws to follow, just getting in front of your audience can seem like breaking through Fort Knox. Effective email marketing for small business owners starts with sales email subject lines that work.

Thirty-five percent of people open emails based on the subject line alone, so your email subject lines for sales should be compelling enough to make prospects click.

What Makes an Email Subject Line Effective?

Effective email subject lines are the ones that people open. If no one opens your emails, they’re not effective. Make your email subject lines enticing by offering a discount, limited-time promotion, or sale on select services.

The three fundamental questions you have to ask yourself before sending off your perfectly packaged promotional email are these:

  • Does it offer an incentive?
  • Does it create urgency?
  • Is it short?

Trying to pack a punch in just a few words may sound tough, but in a fast-paced and mobile-driven society, these criteria are essential to have in your sales email subject lines. It’s important to get your audience’s attention fast, then follow through with content that delivers on what your subject line has promised.

Email Subject Lines for Friends & Family Sales

Run friend and family sales for loyal customers or to increase referrals to new customers. Here are some examples of friends and family email subject lines:

  • Friends & Family Week – 25% off all services
  • Share the love – refer someone and get next service FREE!
  • Our Gift to You – $10 Promotional Gift Card
  • Coupon Code for $25 off $100 purchase
  • Free Gift to the first 100 visitors
  • $5 Deal Day! Get ‘Em While You Can!
  • Loyalty Members: 40% off today!

You can use a subject line grader on your subject lines for sales to make sure they're compelling.

You can use a subject line grader, like this one, to check your subject lines before sending them to sales prospects.

Email Subject Lines for Time-Sensitive Sales

Here are some examples of the best email subject lines for sales that manage to capture attention, offer an incentive, and create urgency:

  • Because We Love You – Flash Sale Today!
  • 1-DAY ONLY Doorbusters!
  • Breaking News! $25 off Today Only!
  • EXTENDED! 48-Hour Sale – 10% Off Coupon
  • One Day Left: Hotel Sale
  • Hot Savings for 3 Days ONLY!

Time-sensitive subject lines for sales that are time-sensitive should create a sense of urgency.

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Email Subject Lines for Holiday Sales

The holidays and other events are great for email marketing. Here are some subject lines for holiday marketing emails or event themed sales:

  • #NationalDrinkWineDay – 15% Off Your Favorites!
  • We’re thankful for our customers: Coupon Inside
  • Cyber Monday Madness — Everything on Sale!
  • 7 Spa Treatments to Put You on the “Nice List”
  • Start your New Year Off Right — 25% off Spa Packages
  • Free Gift! Happy Valentine’s Day, Sweetheart!

Use these tips for your email subject lines for holiday sales.

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Email Subject Lines for Seasonal Sales

Changing seasons is the perfect excuse for a good flash sale. Here are some weather-related sales subject lines to get you started:

  • Snow Day SALE!
  • $2 off for every inch of snow!
  • Winter is coming – we’ve got a sale!
  • Warm up to savings!
  • Cool off with a SALE
  • Can’t take the heat? How about this sale?

Use these weather-related and seasonal email subject lines for sales to get people to take advantage of your inventory.

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Finance & Investment Industry Subject Lines

For small business owners in finance, insurance, and real estate industries, your sample marketing plans may include free consultations, no up-front fees, or discounted add-on policies to incentivize an up-sell. Try using promotion email subject lines like these:

  • We’ll do your taxes for $50
  • Get out of debt! FREE credit counseling session
  • Say Goodbye to your PMI
  • Free Service Upgrade — get more for less!

Use these tips for finance-related email subject lines for sales to get new customers during tax season.

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Fitness Studio Sales Email Subject Lines

Offering low rates or introductory discounts on memberships and services can get you increased foot traffic as part of your fitness marketing strategy.

  • $14 Days of Yoga for $14
  • 2 weeks Unlimited Classes for $50
  • Our 5 Year Anniversary—$5 off every November class
  • $0 Enrollment Fee — Membership Sale
  • First Cycling Class is FREE!

Use these email subjects lines for sales related to your fitness business.

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Salon & Spa Sales Subject Lines

Entice people to visit your salon or spa by sending out relevant timely emails for specials or promotions. This is a great way to fill your quiet weeks during school vacation or other slow times.

  • $50 Massage today at 12:30 pm
  • Grand Opening Sale: 25% off all services
  • $30 Massages! 1 Day Only!
  • Say hello to a new you — $49 women’s hair cuts
  • Share the love. Get 50% off when you refer someone this month!

Use these spa and salon-related email subject lines for sales to get new customers with email marketing.

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Travel Industry Email Subject Lines for Sales

Want to thank your previous customers for using you in the past? or encourage them to make another purchase. Try these travel sales email subject lines:

  • Review your vacation and get 30% off your next booking!
  • Pre-Summer Sale on 4th of July travel
  • 11 Great Deals for the Next 2 Days
  • Tell us more & get $50 off your next trip

Use these email subject lines for sales that boost your travel business.

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Dentist Email Subject Lines for Sales & Promotions

Whether you want to incentivize your patients to come in for their checkup, let patients know about any special promotions you’re running, or get new patients through the door, try these email subject lines for dentists:

  • Here’s a reason to smile: FREE teeth whitening
  • Refer a friend: Get a $50 Amazon gift card
  • It’s time for your cleaning! Come in for a free electric toothbrush
  • BOGO teeth whitening treatments this month!

Use these dentist email marketing subject lines for sales to get new patients or bring in existing ones.

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Home Services Subject Lines for Sales

We couldn’t leave out our friends in the home services industry! Use these email subject line ideas to rake in new customers and get in front of existing ones.

  • Book now, save later: 25% off summer services!
  • Plumbing problem? Let us fix it — deal inside!
  • 5 big discounts you won’t want to miss this month
  • We want your feedback! $50 for your thoughts

Use these email subject lines for sales related to your HVAC or service business.

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Get Started with Promotional Emails that Work

You can modify any of these promotional email subject lines to fit your business and the promotion or sale you’re offering. Successful email marketing campaigns require great content but always start with a solid subject line. These subject lines should give you some examples of the best email subject lines for your sales promotions.

Download this targeted email marketing guide from LOCALiQ to learn how to make email marketing work for you.