Megan from MailerLite

Megan10 min readTips and resourcesMay 19, 2021

Sizzlin’ hot summer newsletter ideas for 2021

Sizzlin’ hot summer newsletter ideas for 2021

If summer is your favorite time of the year, then you and I have something in common. It’s the time of slowing down and enjoying those long summer nights.

While summer can be a slow time for business with lower newsletter engagement, it's definitely not the time to stress. Quite the opposite—summer is a time to bring new life into your email marketing campaigns!

Use this season to complete long-overdue email maintenance tasks, shake up your content and play around with your summer newsletter design.

Go get a refreshment and find a shady spot. We’re about to summer’ize your newsletters.


With the hustle and bustle of everyday life, you easily forget about email maintenance.

When was the last time you sat down and took a fresh look at the different aspects of your email marketing? How’s your subscriber segmentation, the health of your email list and your subscriber forms?

Use the season to get your email marketing back into its healthy shape.

1. Segment: Group your readers

How can you get more personal with your readers? Analyze your list and group subscribers based on things like location, previous purchases, gender, age group, interests, and so on.

Marketers who use segmented campaigns note as much as a 760% increase in revenue, so this task is definitely worth getting sweaty for.

For example, when you know your reader’s location, you can send them flight offers for nearby airports or suggest weekend trips to neighboring cities.

Missing this information? Ask! KLM does this in an engaging, interactive way in their welcome email.

KLM summer newsletter example

You can also gain customer insights by asking for feedback. This is easily done by embedding a survey into your summer newsletter template. 

Now that things are a little quieter, you'll have the time to really go through the survey answers, listen to your readers and brainstorm ways to strengthen your brand.

CurleeMe shows how to gather feedback in her newsletter below.

CurleeMe survey summer newsletter let us know how we're doing feedback email

2. Verify subscribers: Dust off your email list

Cleaning your email regularly ensures that you’re protecting your sender reputation and improving your deliverability.

With a tool like MailerCheck, you simply need to upload your email list to verify subscribers. Once your emails are analyzed, you can import your cleaned email list and enjoy subscribers that are in top shape. This will save you money when sending your next summer campaign.

3. Optimize: Refresh your landing pages and forms

Summer is a good time to check your stats and see what numbers you can improve. Maybe the wording can be more convincing or your images could use a touch-up. Small tweaks can make all the difference.

If you don’t believe me, ask copywriter Cole Schafer.

“A good high converting landing page is like a sexy well-dressed super-powered salesman or saleswoman that can sell like a Florida snow cone vendor on the hottest day of the year.”


Your business might suffer from summer slow motion, but don’t give up on your email marketing efforts. Instead, take inspiration from these engaging summer newsletter ideas.

Summer newsletters are for something special

You see this in magazines all the time: summer specials. Why don’t you shake up your content?

Talk about family-friendly activities, mouth-watering recipes or airy summer styles. With a bit of brainstorming, you’ll soon come up with 101 summer ideas for your newsletters.

Our customer Pauline Alice shows readers in their summer newsletter how to make their own dress from the sewing patterns that they're selling (which looks awesome, btw).

Pauline Alice summer newsletter vera dresses created using mailerlite

Topshop showcases their favorite dresses with an interactive email GIF that makes their readers want to dress up for a summer night out.

Topshop summer newsletter example

Man Repeller helps their readers to put together the perfect outfit for traveling, making sure you're all cozy up in the air.

Starling Irving summer newsletter example

Summer, summer, summertime. Time to sit back and unwind! Our customer, clothing shop The Fresh Prince, announces their bright new collection in a colorful email. 

By making it a limited capsule collection with an end date for sales, customers are more prone to take action and click the CTA button within the summer newsletter. Smart!

The Fresh Prince summertime newsletter colorful clothes collection

Downloadable lists: Ready, prep, go!

Create a summer list. What to pack for a solo trip to Asia, how to get in shape in 31 days, 33 must-read books to finish this summer—you can create a list about practically anything.

As downloadable PDF files, lists are a great way to collect new subscribers. Create a signup form that is linked to a welcome email. Then insert the URL to download the list in this email. Now you can promote this signup form on a landing page, in blog articles or as a website pop-up.

Look at Everyday Explorers, a website about travel, paper, and scrapbooking. Founder Christine Herrin created these super fun summer printables and offered them as a free download for her customers.

Everyday Explorers summer newsletter example summertime printables

Thrillist curated a list of the 33 books they can't wait to read in the summer.

Thrillist summer newsletter example animated gif sunglasses book

Tip: Not sure how to design a good-looking downloadable? Online tools like Canva and Venngage make it easy to design like a pro.

Engaging summer contests

Ask readers to answer quiz questions, send their vacation selfies or team up with their friends to win prizes. This will surely boost your readers' engagement!

London’s Lovebox festival motivated visitors to send videos showing how they experienced the festival. This resulted in a super interactive and engaging newsletter.

Lovebox summer newsletter example animated gif video festival promo

Make sure your price is attractive enough for readers to take a break from tanning. Skincare brand Primally Pure nailed this. They gave away beauty products worth over $1700—an offer no mini-Kylie can refuse.

Primally Pure summer newsletter example minimal white tones

There are as many ice cream flavors as there are summer newsletter ideas. Especially when you take into account all of the bank holidays and special occasions. 

So when you’re running out of ideas, why not use an event to create newsletter content around?

The biggest summer happenings to mark on your email calendar are Father’s Day, Independence Day, Labor Day and the last and first day of school.

And if that’s not enough, no worries.

At some point in time, someone, somewhere decided that July would be Hot Dog Month, August 3rd Watermelon Day and August 6th (wait for it) Fresh Breath Day.

Malaysian booze delivery service Boozeat celebrated our favorite, #worldmartiniday on June 19th, with this newsletter.

Boozeat summer newsletter example world martini day

And there’s even more to celebrate this summer! Check out the calendar underneath, and don’t forget about the events and festivals happening in your area.

DateHoliday
Entire JuneNational Candy Month
June 7National Chocolate Ice Cream Day
June 14Flag Day
Entire JulyHot Dog Month, National Ice Cream Month, Family Reunion Month
July 4Independence Day
August 3Watermelon Day
August 6Fresh Breath Day
August 8Happiness Happens Day
August 12International Youth Day
August 13International Left Handers Day
August 25International Kiss and Make up Day
September 7Labor Day

Just like we pack up our heavy jackets and fill our closets with more airy materials, it’s also beneficial to make your email newsletters summer-ready. These email design changes will help brighten up your emails and keep your newsletter readers engaged!

1. Mobile-friendly content

A lot of people already read their newsletters on mobile devices. Once the temperatures rise, this number will only increase. Make sure your newsletter is responsive and uses bright, contrasting colors so the content is easy to read outside.

2. Add a little sunshine in your design

Using bright colors enhances your click rate. Try styling your buttons in yellow—this color not only gives off major summer vibes, it’s also recommended by psychologists to stimulate curiosity. This is why people tend to click yellow buttons more. Discover more color hacks in our blog post on what colors are best for email marketing.

3. Set the mood with images

Use beautiful photos to make your subscribers feel warm and fuzzy. There’s plenty of great photos online that you can use for free (check our blog post about the best free resources for beautiful newsletters). Our tip? Use your own photos to be more personal.

4. Make it playful by using interactive elements

Swimming, jogging, dancing, hula-hooping—summer is all about movement! Put some action into your summer newsletters and play around with GIFs, videos and countdown timers.


We get it, surviving a day in your sticky office or home is already exhausting enough. That’s why we did you a favor and curated our favorite summer email subject lines for 2021. Some invented by our own customers, others taken from our inboxes.

Ecommerce subject lines

Cloud Style - ⚡ Summer Sales ⚡ Wonderful Summer Fabric Clothing

Angora Boutique - It's Almost Summertime! ☀️ 25% Off Coupon Inside!

Eccentrics Boutique - [VIDEO] Summer styles have hit the streets!

Travel Diaries - Summer deal: 20% discount on your diary!

Urban Jewellers - Giving away our summer collection. Free 18K chains for you Megan?

SHOPAHOLIC - O.M.G. 😲 80% OFF July 4th Sale Kicks Off

ZerotoTwo - Sunny Summer Styles You'll Love - Starting At Only $59

Travel and transportation subject lines

Selina - 🌞Hey, Megan, heard you were looking for sunshine...

Anna Ukolova - Traveling to Ukraine this summer...Is it possible? Check out?

San Antonio Things to Do - 15+ Restaurants w/ Playgrounds to Enjoy Before It Gets Too Hot

Dipaways - 5 WORST Travelers – Are You One?

Boston on a Budget - Travel Safe This Summer with RVshare!

Trekaroo, Inc. - What was your sweetest summer memory? Here's mine.

Tremendous Times - Ways you can travel with a 9-to-5 ✈

Fitness and health subject lines

CheYoga and Ayurveda Wellness - Summer Solstice 108 Sun Salutations challenge 🧘‍♂️

Ray’s Indoor Bike Park - Summer Sessions are in FULL swing! Have you checked out the changes?

SlimLife Health & Wellness - ☀Summer Is Still In Full Swing & So Is This Restart Special!

Hohman Rehab and Sports Therapy - Megan, summer is HERE! Are you ready?! ??

Wellsome - Join our first Virtual Well Woman Retreat Day! June 27th (save your spot now)

RunToTheFinish - Kick Off Summer Strength {FREE}

Levine Family Fitness - Get Smokin' Literally and Figuratively with this BETTER BODY BBQ Challenge!

Media and publishing subject lines

Clean and Sweet Deals on Romance - 💕 This back to school party is about to be over sooner than expected…

Roxy Reid - 💖 Grab hot & spicy FREEBIE reads for summer

Helena Hunting Books - Ready for a summer fling? Brand new FREE summer stories!

Virtual Book Club for Kids - Summer has started! PLUS a special summer bonus for all our virtual book club friends

Fresh Fiction - Kick-Off YOUR Summer with special giveaways, books, gift cards and FUN!

BM Mills - Goals for Summer: What are yours? ⛅

Various industries subject lines

All My Good Things - Summer "Must Haves" for the kids and the Start of this Strange Summer ☀️

Year Round Homeschooling - *Limited Time Freebie* June Summer Bucket List

Cook’s Hideout - Chocolate Pudding Pops!! Easy to make Summer Treat 🍫

Mom 4 Real - Homemade Sunburn Relief Spray Right in Time for Memorial Day Weekend!

Thrillist - The Best Music You'll Stream All Summer Long

ELLE - Win a Luxury Getaway to Mexico + Flight Credit!

Joy Filled Eats - Want to try ButcherBox? Get a FREE bbq bundle today!

Joi Wade - ☀ Natural hair wash day routine for SUMMER!

Taylor Lynn Crochet - Summer Top Crochet-A-Long

Raffa Musa Designs - Last Day to Download the FREE Patterns of The Summer Stitch Along, Week 3

— With missing sender information

⚡ Sizzling Summer Releases and Hot Deals ⚡

Need A Summer Escape?

Summer Sale & Last Part of the Wish Factor

Happy Fourth of July {$name}! What's your favorite summer barbecue food?

A Summer Gift for You!

How to Dress for a Summer Date

Summer Style Lessons

{$name}, how's your summer so far?

Happy almost summer!

What We're Wearing on Summer Travels


On a last sunny note…

Use the summer to get your email marketing strategy in excellent shape and surprise readers with fresh content and eye-catching newsletter designs.

If you do, you won’t need to stress about your business suffering from summer fatigue. On the contrary, your readers will want to engage with your newsletters and celebrate summer with you.

How will you brighten up your newsletter this summer? Share your strategy in the comments.


Editor's note: This post was originally published in May 2019, but has been updated with new subject lines and summer newsletter examples.

Create your own summer campaign in minutes!

Our free plan gives you access to all important features, like bright landing pages and smooth automation campaigns so you can build automated workflows then chill out by the swimming pool. Sign up today and enjoy 14-day access to all premium features.

SIGN UP FREE

Megan de Graaf

I’m Megan, Senior Content Writer at The Remote Company. Ever since I started working remotely, I pick my homes depending on the seasons: Europe during spring and summer, NYC for autumn, and winter escapes in Mexico.