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Updated:
9 mins read
Updated:
9 mins read
As summer fades, your audience is ready for something fresh, and your newsletter can deliver.
While many marketers lean into Labor Day weekend or fall content, this month offers so much more than just seasonal themes.
From World Letter Writing Day to International Podcast Day, here are over a dozen unique newsletter ideas to inspire your September campaigns.
| Day Name | Date |
|---|---|
| World Letter Writing Day | September 1 |
| Acne Positivity Day | September 1 |
| World Coconut Day | September 2 |
| Labor Day | September 4 |
| International Day of Charity | September 5 |
| International Literacy Day | September 8 |
| National Grandparents Day | September 8 |
| World Suicide Prevention Day | September 10 |
| World Gratitude Day | September 21 |
| World Alzheimer’s Day | September 21 |
| International Daughters Day | September 24 |
| National Cooking Day | September 25 |
| World Tourism Day | September 27 |
| Coffee Day | September 29 |
| International Podcast Day | September 30 |
Every year on September 1st, people around the globe are encouraged to embrace the lost art of handwritten communication. Whether it's a personal letter, a thank-you note, or a creative postcard, this day celebrates the power of putting pen to paper.
Newsletter idea: Handwrite your newsletter intro, scan it, and include it as a warm image block. Share pen-pal resources or encourage your audience to write a letter to someone they appreciate.
Celebrated on September 1st, this day raises awareness around acne acceptance and promotes a shift away from the stigma attached to skin conditions.
Newsletter idea: Share your acne journey or spotlight an acne-positive influencer. Promote skincare products that support healthy skin, without promising perfection.
On September 2nd, World Coconut Day highlights the cultural and economic importance of coconuts in tropical countries, where they're a staple in food, wellness, and industry.
Newsletter idea: Create a coconut-themed product spotlight. Feature coconut-infused beauty items, tropical recipes, or wellness tips. Use imagery of beaches, palm trees, and coconuts for an instant island vibe.
Celebrated on the first Monday of September, Labor Day honors workers and marks the unofficial end of summer. It's a time to relax, enjoy family, and recognize the contributions of everyday heroes.
Newsletter idea: Run a weekend sale celebrating hard-working customers. Feature employee appreciation posts or behind-the-scenes content of your team.
For example, Away ran a sleek Labor Day sale, reminding customers that adventure doesn’t have to end with summer while showcasing their award-winning luggage.
Observed on September 5th, this day encourages giving and kindness, inspired by the life and work of Mother Teresa.
Newsletter idea: Choose a charity to support and tell subscribers why it matters to you. Consider donating a portion of the proceeds and encourage subscribers to get involved with matching donations.
Haus Labs, for example, partnered with the Born This Way Foundation and donated a portion of every sale that week to support youth mental health programs.
Recognized on September 8th, this UNESCO initiative promotes the right to education for all. It highlights the importance of reading in personal and societal growth.
Newsletter idea: Run a book-themed campaign. Share your favorite reads, donate a portion of sales to a literacy charity, or offer a free downloadable chapter of your ebook.
Held on the first Sunday after Labor Day, this day honors the love, wisdom, and life stories of grandparents around the world.
Newsletter idea: Share a touching story about your grandparents (with their permission) or invite your audience to send in their own. Offer gift ideas or discounts on personalized items perfect for grandparents.
Blurb, for example, created an emotional connection by inviting grandchildren to contribute handwritten notes to a memory book.
Marked on September 10th, this day brings global attention to mental health awareness and suicide prevention, encouraging open conversations and support.
Newsletter idea: Share trusted mental health resources and hotline information. If appropriate, use your platform to amplify nonprofit partners or promote products with proceeds benefiting mental health initiatives.
Celebrated on September 21st, this global observance encourages individuals and organizations to reflect on what they're thankful for.
Newsletter idea: Write a gratitude letter to your subscribers and offer a small reward like a discount or freebie as thanks. Invite your audience to reply with what they’re grateful for.
Headspace, for example, reminded users to focus on small joyful moments, even during tough times. They encouraged gratitude practices to improve mental well-being.
Observed on September 21st, this day spreads awareness of Alzheimer's disease and supports efforts to care for those affected and fund future research.
Newsletter idea: Share caregiving resources, support Alzheimer’s charities, or spotlight customer stories. If your brand relates to health or wellness, promote brain health tips or products.
Observed on September 24th, this day celebrates daughters and their role in family, and society, often marked by appreciation and love from parents.
Newsletter idea: Share a personal story about your daughter or encourage followers to do the same. Offer special bundles or a gift guide tailored for parents and daughters.
Take a look at this example:
Celebrated on September 25th, this day invites people to get back into the kitchen and discover the joy of making meals from scratch.
Newsletter idea: Share your go-to recipe or a printable meal plan. If you're in food, cookware, or wellness, promote kitchen-friendly products with a time-limited discount.
Observed on September 27th, this UN-recognized day highlights sustainable tourism and the value of travel to cultural and economic development.
Newsletter idea: Feature your favorite travel destinations, promote travel-related products, or create a local travel guide. Offer a discount on travel bundles or gear.
For example, Hotel June offered fall vacation deals with free food credit and fun activities like bike rides by the beach.
Celebrated on September 29th, this day honors one of the world’s favorite beverages and those who produce it, from farmers to baristas.
Newsletter idea: Share a fall coffee recipe or launch a limited-edition coffee-themed product. Include cozy autumn visuals and offer a coffee lover’s discount code.
Cometeer, for example, gave customers a $25 off for every successful friend referral during their Coffee Day campaign.
Observed on September 30th, this day celebrates the power of podcasts to educate, entertain, and inspire listeners around the world.
Newsletter idea: Promote your podcast, share a behind-the-scenes look, or recommend your favorite shows. Use audio snippets in your email to add a personal touch.
For example, Spotify launched a Masterclass event inviting creators to learn directly from product experts about growing their podcast and strengthening fan engagement.
Here are five themes you can use to connect with your audience all month long.
Every year, the autumn season officially begins around September 22nd in the Northern Hemisphere. It's a time of transformation, cozy vibes, and a shift in energy as summer fades and cooler weather approaches.
Newsletter idea: Launch a fall-themed series with cozy recipes, wardrobe refreshes, or home decor inspiration. Use warm, seasonal colors in your email design and encourage subscribers to share their favorite fall traditions.
Here's a free fall email template to try this idea.
Celebrated from September 15 to October 15, this month honors the cultures, histories, and contributions of Hispanic and Latinx communities across the United States.
Newsletter idea: Spotlight Hispanic-owned brands or creators, share stories that honor cultural heritage, or curate a themed product collection. Use this time to amplify Latinx voices relevant to your niche.
For example, De La Calle offered a limited-time collaboration with Nopalera, gifting a shower gel mini with each purchase.
Observed throughout September, this campaign raises awareness about chronic pain and the need for better pain management, support, and research.
Newsletter idea: Share personal stories or educational resources on chronic pain, especially if you're in the wellness or health space. Highlight products, routines, or expert interviews that focus on pain relief and care.
Take a look at this example:
September is the end of the summer season, and this is the best time to remind your customers of the end-of-the-season sale. You can send a special coupon code or offer percentage discounts on your products to make your campaign exciting.
Source: Pure360
Here's a free coupon code email template to create something like this.
With autumn coming up soon and the temperature getting cooler, you should promote your products relevant for cooler temperatures. Check out this example that depicts this idea well:
Source: Brevo
Since International Day of Charity and Literacy Day fall at the start of September, you can keep a social giving week and remind your customers that you will be giving a portion of your sales to a support group or charity of your choice. An example of this could be:
Source: Email on Acid
💡 Related guide: 11 Must-Know Mobile Email Design Tips to Keep Your Subscribers Happy
Type: Newsletter Best for: B2C, D2C
If you have a health-related business, you should celebrate yoga month with your subscribers, which falls in September. To implement this idea, you can send a newsletter including the best yoga poses to practice every day of the month and make a challenge out of it, or you can offer special discounts on products or courses related to yoga.
Here's an example:
Source: Beefree
With so many themes and events to explore in September, it can be overwhelming to design each one. Between crafting layouts, adding visuals, and planning content, setting up every campaign from scratch takes time.
Mailmodo’s AI Template Generator helps you speed up the process by instantly creating ready-to-edit email templates. Just describe your idea like a “Labor Day Sale,” “Back-to-Routine Tips,” or “Hispanic Heritage Month Feature” and the AI suggests complete layouts with content blocks, headlines, and visuals that match your theme.
Your AI Assistant for Everything Email Marketing
This was a list of the best September newsletter ideas you can try to stand out, including welcoming autumn, saying bye to summer offers, and supporting social causes to celebrate fitness with the Yoga Month challenge. Here's a Marketing Calendar 2023 by Mailmodo to try creative marketing ideas throughout the year.
In a fall newsletter, considering adding fall essentials checklists and guides with you own product recommendations, you can also promote products for cooler temperature and end the summer season with a discount offer,
In a monthly newsletter, you can pick up random holidays or festivals that are relevant to the content and products you produce or sell and send monthly consistent newsletters to your subscribers.
You made it till the end! Here's what you can do next to grow your business:
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