There’s no denying that “it’s beginning to look a lot like Christmas.” 

I don’t know why, but usually this time of year I’m annoyed by seeing Christmas items out before Thanksgiving. I guess I’ve always felt that other important holidays were being overshadowed by Christmas. But this year is different.

This year, I started Christmas early. I’ve already purchased the most important gifts I’ll be giving and started planning out my decorations and making small purchases to make our house glow with Christmas.

I’m not sure why I’m so excited for the holiday this year. 

Maybe it’s the lingering effects of pandemic response or the concern over shipping delays, or just maybe it’s the fact that this year is our first Christmas in our new home.

There’s so much to do and always so little time but I’m determined that there will be no doubt in this house that the holiday season is here!

And while Christmas (Dec. 25th) dominates the month of December, there are a lot of other December holidays that shouldn’t be overlooked. After all, Hanukkah may have started on November 28th but it doesn’t end until December 6th. And, of course, Kwanzaa starts on December 26th and ends on January 1st.

Whether you want to support a cause like Operation Santa Paws (Dec. 1-24th) or have some fun sharing images of your favorite ties because it’s National Tie Month, December is the month for sharing all kinds of holidays and occasions in your newsletter. And, as always, I’ve made my own list of December newsletter ideas and subject lines to help you get started.

December holidays — 2021

Besides being National Tie Month, December is also National Write a Business Plan Month, Universal Human Rights Month, and Spiritual Literacy Month but those are just a few big designations for the month of December. There are a lot more. I found no less than 12 “national month” designations for the 12th month of the year. Hmm, am I detecting a theme here?

  • December 2ndNational Mutt Day. This twice-a-year holiday can go hand-in-hand with Operation Santa Paws to both celebrate favorite mutts and to bring Christmas joy to animals in your local shelter.
  • December 3rdInternational Sweater Vestival. If you wear them, you know.
  • December 5thSacher-Torte Day. It’s chocolate. What’s not to love?
  • December 6thSt. Nicholas Day. The precursor to the modern-day Santa Claus, St. Nicholas was a Greek Bishop who gave to the poor.
  • December 7th – National Pearl Harbor Day of Remembrance. As a day that arguably changed the history of the world, “Pearl Harbor Day,” is an important day to remember and share with your readers.
  • December 14thHalcyon Days. Dating back to a Greek legend, it’s now a time of happiness and content and is often associated with nostalgia of Indian Summers and childhood.
  • December 15thNational Cat Herders Day. Yep. It’s a thing.
  • December 17thWright Brother’s Day. Celebrate the places we can go thanks to these brave and brilliant brothers.
  • December 21st Look On The Bright Side Day. This has nothing to do with Monty Python. I swear.
  • December 26thBoxing Day. A day to give gifts to those that provide a service to us throughout the year (i.e. housekeepers, gardeners, doormen/women, etc.) celebrated in the UK, Australia, New Zealand and Canada.
  • December 28thPledge of Allegiance Day. Say it with me now.
  • December 29thStill Need to Do Day. Are you ready for the New Year?

December newsletter ideas

Whether you want to do some good, have some fun, or do all things Christmas this month, I’ve got some ideas for you.

December newsletter ideas for good causes

While it’s always good to support local charities all year long, it’s especially important to support them in the month of December. For some nonprofit organizations, December can be a desperate time. 

Not only are those they serve usually in more need than ever during the lean winter months but often nonprofit budgets and resources are at their lowest. And while many people may give throughout the year or volunteer during the holiday season, it never hurts to do just a little bit more. Especially if you can make it fun.

Mitten Tree Day (Dec. 6th)

Likely inspired by the children’s book, The Mitten Tree, by Candace Christiansen, this day is for providing mittens (or gloves) to children to help keep them warm during the winter months. You can participate by:

  • Setting up a mitten tree in your business and encourage employees and visitors alike to hang sets of mittens and gloves to be donated to those in need.
  • Creating a virtual mitten tree online where people can donate funds to purchase mittens for those in need.
  • Partnering with a local knitting group and sponsor a knit-a-thon with all proceeds (and knitted mittens) to go to a local charity.

While started to help children, no one says this day can’t be used to help people of all ages. Think about expanding your efforts to provide mittens, gloves, and even scarves and hats, to those in your community that have a need this year.

World Wildlife Conservation Day (Dec.4th)

No one says you have to stay local when giving back this year. If it fits your brand, this is a great day to bring wildlife conservation to the attention of your readers.

  • If there is one near you, partner with a local wildlife conservation organization and encourage your employees and customers to volunteer their time and donate to help out.
  • Share some information about your favorite wild animal and ask your readers to join you in working to save it.
  • Start a “funds match” campaign to donate to a wildlife conservation organization, whether local, national, or international.  Make sure to set a cap (and goal) on how much you’ll match then promote it in your newsletter and challenge your readers to surpass the goal.

Blue Christmas (Dec.21st)

Held on the longest night of the year, Blue Christmas is traditionally a Western Christian tradition to comfort those who are grieving a deceased loved one. 

However, with days getting shorter and nights getting longer, it’s also when things like Seasonal Affective Disorder (SAD) and depression can be at their worst. Therefore, Blue Christmas can also be a time to comfort and support those who may be struggling to find joy and hope during the season, no matter what the reason or cause. 

You can participate in Blue Christmas by:

  • Bringing awareness to the day. Sometimes people need to be reminded that not everyone is happy when the holiday season rolls around and it’s important to make space for sadness in the midst of all the merriment.
  • If it aligns with your brand, share a list of local churches and organizations that are holding Blue Christmas services or support meetings.
  • Share an online article or list of ideas for how to get through a Blue Christmas

December newsletter ideas just for fun

Walt Disney Day (Dec.6th)

I can’t imagine anyone not loving this day. While it’s all about Walt himself, it’s a great day to celebrate all things Disney!

  • In the tradition of Disney, see how many things “Disney” you can fit into your email (à la the Mickey emblems sprinkled throughout Disneyland)
  • Share a staff list of favorite Disney movies (this can be anything from Disney animations to their newly acquired Marvel or Star Wars enterprises)
  • Use your favorite Disney quote or character name as a secret password for savings, discounts, or special gift

Pretend to be a Time Traveler Day (Dec. 8th)

Okay, this might be the best day ever!

Except maybe Christmas. But if you were a time traveler you could go back to every Christmas ever! So, still the best day ever! 

As with most “fun” holidays, make sure this one will fit your brand before diving into these time-traveling suggestions.

  • Create a newsletter using Olde English, antique pictures, or images, then challenge your readers to take to social media to guess what time period the images are all from
  • Curate a list of “best time-travel” novels, shorts, or movies and share it with your readers
  • Invite your employees to dress up as time travelers for the day (whether favorite ones from movies or their own version)

Whatever you do though, don’t tell anyone you’re a time traveler!

National Chocolate Covered Anything Day (Dec. 16th)

Did you really think I would leave food out of this article? During the holidays? Not a chance!

  • Share some chocolate covered recipes
  • Tell a story about the weirdest chocolate-covered thing you ever ate (I know someone who says chocolate covered ants taste like chocolate covered raisins but I’m not buying it)
  • See how many chocolate-covered things you can name, share a couple in your newsletter and on social media, with a more complete list on your website (this one is also great for a social media challenge)

December newsletter ideas for the Christmas spirit

If you want to keep your December newsletter “everything Christmas,” here’s a quick list of holidays for you!

  • National Christmas Lights Day (Dec. 1st)
  • Make a Gift Day (Dec. 3rd)
  • Santa’s List Day (Dec. 4th)
  • Christmas Card Day (Dec. 9th)
  • Gingerbread House Day ( Dec. 12th)
  • National Ugly Sweater Day (Dec. 17th)
  • Humbug Day (Dec. 21st)
  • National Cookie Exchange Day (Dec. 22nd)
  • National Christmas Movie Marathon Day (Dec. 23rd)
  • National Eggnog Day and Christmas Eve (Dec. 24th)
  • National Pumpkin Pie Day and Christmas (Dec. 25th)
  • National Thank You Note Day and National Candy Cane Day (Dec. 26th)

For all of these days, the operative word for your newsletter is share.

  • Share images
  • Share DIY tips and tricks
  • Share a story of your team, your family, you, or even one that you found online

Whatever holiday you highlight in your newsletter this month, whether you champion a cause, issue a challenge, offer advice, or ask your readers to share, include a branded hashtag and a custom hashtag — along with a corresponding post on social media — so you can easily find and like what they post!

December newsletter subject lines

  • “There’s snow place like 🏠” – this one’s great if you have anything to do with homes, such as real estate, home decor, or homeowners insurance.
  • “Light up your life” – National Christmas Lights Day (Dec. 1st) – this is great for highlighting products or services that relate to lights or lighting as well as for sharing Christmas lighting tips and tricks
  • “Just fritterin’ away” – National Fritters Day (Dec. 2nd) – a great all-around subject line when sharing the latest news with your readers
  • “We’re being naughty.” or “We’re being nice.👼” – Santa’s List Day (Dec. 4th) – depending on how you spin it, great for a special offer or discount
  • “Sacher on over here” – Sacher-Torte Day (Dec. 5th) – for inviting readers to come into your business for a special sale or treat
  • “Scientifically speaking… this computes “ – Computer Science Education Week (starting Dec. 6th) – great if your a teacher, or have anything to do with computers
  • “Do you Decimal?” – Dewey Decimal System Day (Dec. 10th) – for any business that has to do with books, libraries, or education
  •  “This email is App-ropos” – National App Day (Dec. 11th) – a great way to introduce a new app for your customers, or share some apps that will help them get through the holiday season
  • “Stop trying to herd 😼😼” – preheader: “We can help” – National Cat Herders Day (Dec. 15th) – this is good for stress management or organizational related businesses
  • “Exterminate!” – International Delek Remembrance Day (Dec. 21st) – it doesn’t matter if you’re a Doctor Who fan or an actual exterminator, it works!
  • “We’re rooting for you” – National Roots Day (Dec. 23rd) – while this is a day to discover your family roots, this can easily be parlayed into a sales pitch for hair dye
  • “Find your roots” – National Roots Day (Dec. 23rd) – great for companies that specialize in finding family members, family history, birth parents, or for advocating for people to go “natural” with their hair!

Christmas newsletter subject lines

  • “🎶The horse knows the way to…“ – use the preheader to describe the destination (great deals, Christmas help, etc.)
  • “We’ve got what you’re dreaming of” – great for showcasing whatever you have to offer
  • “Do you hear what I hear?” – good for any announcement
  • “Longing for a silent night? – good for a mattress store, a sleep app, or a babysitting service
  • “Hark the herald angel sings …” – use the preheader to describe what’s being heralded (a sale, an announcement, good wishes)
  • “This sale sleighs” – any use of sleigh as “slay” for a sale or information
  • “Rein it in deer 🦌” – preheader: “this deal is Santa approved” – for any type of sale, special deal, or discount
  • “Elf🧝 tested and Santa🎅 approved” – a great all-around subject line for everything from gift ideas to events
  • “Don’t be Rud-olph, respond now!” – for events that require invitees to respond in a timely manner
  • “Christmas is here!” – good for letting your customers know you’ve got new holiday stock, or back-ordered or previously out-of-stock items have arrived
  • “We’ll deck your halls” – while great for a holiday decorating service or a business that sells decorations, it’s funnier if used for a decking company offering an off-season pre-booking discount
  • “Bring joy to your world” – great for a newsletter that offers tips for the holidays and fun for a restaurant or bar offering holiday drinks or drink discounts

Once you’ve written your newsletter, use some of the ideas above to trigger a creative brainstorm of potential email subject lines.

As you brainstorm, jot down whatever comes to mind. It doesn’t matter how silly, crazy, or far out there the ideas might seem at first. Write them all down. Then cross out anything that seems spammy, is too long (greater than 40 characters), or just doesn’t make sense.

After that, it’s just a matter of picking a good email subject line that 1st: gives a hint as to what’s in the newsletter, and 2nd: will hopefully make readers curious as to what’s inside.

As you narrow down your possible subject lines, you’ll see that creating the right subject lines for your newsletters is really pretty easy after all. 

For more December holidays and ideas on what you can do to share them with your customers, download the graphic below. Or, plan out your full year with our  Online Marketing Calendar, complete with a free template and a full list of holidays you can use to plan a successful year.

December 2021 holiday and marketing planning infographic

Constant Contact December 2021 Marketing and Holiday Planning infographic