For most online stores, a handful of seasonal shopping periods generate a disproportionate chunk of annual revenue. Black Friday alone accounts for billions in online sales. The holiday season, Valentine's Day, Mother's Day, back-to-school. These predictable moments of high buying intent happen every year like clockwork.
The stores that crush these periods aren't doing anything magical. They're just planning their email campaigns in advance instead of throwing something together the night before.
The Seasonal Email Calendar
Start by mapping out the year. Not every season matters for every store, but here's the general calendar most online stores should consider:
January: New Year sales, "new year, new you" campaigns. Works well for fitness, wellness, organization, and self-improvement products.
February: Valentine's Day. Not just for jewelry and flowers. Any product that works as a gift is fair game.
March-April: Spring cleaning, Easter, spring collections. Home and garden stores should be active here.
May: Mother's Day. Gift guides perform extremely well.
June: Father's Day, summer kickoff, wedding season.
July-August: Back-to-school. Summer clearance sales.
September-October: Fall arrivals. Pre-Black Friday list building starts.
November: Black Friday, Cyber Monday. This is the big one for most stores.
December: Holiday gifting, last-minute shipping deadlines, end-of-year sales.
You don't need to hit every single date. Pick the 4-6 that matter most for your products and focus on executing those well.
The Pre-Season Playbook (4-6 Weeks Before)
The work starts well before the sale goes live.
Build Your List
Run a list-building campaign with a seasonal hook. "Join our VIP list for early access to our Black Friday deals" is way more compelling than "subscribe to our newsletter."
Use:
- Website pop-ups with the seasonal angle
- Social media posts driving to a signup page
- Exit-intent overlays: "Wait! Get early access to our holiday sale."
The people who sign up specifically for a seasonal sale are your hottest audience. They've told you they want to buy.
Warm Up Your Sending Volume
If you normally email twice a week, you can't suddenly send twice a day during Black Friday without triggering spam filters. Email service providers track your sending patterns, and sudden spikes look suspicious.
Start increasing your email frequency 2-3 weeks before the sale. Go from 2 per week to 3, then 4. By sale time, daily sends won't look like an anomaly.
Clean Your List
Remove subscribers who haven't opened an email in 6+ months. Sending to disengaged contacts during high-volume periods hurts your deliverability right when it matters most. A smaller, engaged list will always outperform a large, unresponsive one.
Tease the Sale
Start building anticipation 1-2 weeks before launch.
Email 1 (2 weeks before): "Something big is coming. Mark your calendar for [date]."
Email 2 (1 week before): "Our biggest sale of the year drops in 7 days. Want early access?"
Email 3 (day before): "Tomorrow. Our [sale name] starts at [time]. Here's a sneak peek."
These teaser emails prime your audience to buy on day one. The people who opened and clicked these teasers should be your first segment to email when the sale goes live.
During the Sale: Email Cadence
Day 1: The Launch
Send the sale announcement to your full engaged list. This email should be:
- Clear on the offer (what's the discount, what's included)
- Visually strong (product images, not walls of text)
- Urgency-driven (when does it end)
- One big CTA button ("Shop the Sale")
If you offered early access to your VIP list, send them the sale 12-24 hours before the general launch. This rewards their loyalty and generates early revenue you can reference in later emails ("Over 500 orders already in the first 12 hours!").
Days 2-3: Category Highlights
Instead of repeating the same "sale is live!" message, feature different product categories or collections each day.
"Day 2: Our top 10 gifts under $50" "Day 3: Bestsellers at 30% off (these always sell out first)"
This gives people who didn't buy on day one a new reason to click, and it surfaces products they might have missed.
Mid-Sale: Social Proof
Share what's happening:
- "Over 2,000 orders so far"
- Customer photos or reviews of popular sale items
- "Most popular item: [Product] - selling fast"
Social proof during a sale creates momentum. People want to be part of something others are participating in.
Last Day: Urgency
The last-chance email typically generates 25-40% of total sale revenue. People procrastinate, and a deadline forces a decision.
"Sale ends tonight at midnight. Last chance to save."
If certain products are selling out, mention it. But only if it's true. "Only 12 left in stock" works if you actually have 12 left. Fake scarcity always backfires.
Post-Sale: Thank You
After the sale ends, send a thank-you email to everyone who purchased. Confirm shipping timelines (especially important during busy periods when shipping is slower), share what's coming next, and express genuine gratitude.
This is also a good time to tease the next seasonal moment. "Thanks for shopping our Black Friday sale. Keep an eye out for our holiday gift guide coming next week."
Subject Lines for Seasonal Campaigns
During peak shopping periods, inboxes are crowded. Your subject line needs to stand out.
What works:
- Specificity over vagueness: "30% off all outerwear" beats "Big Sale Inside"
- Numbers: "Under $25," "Save $50," "Top 10 picks"
- Personalization: "[Name], your wishlist items are on sale"
- Urgency with specifics: "Ends tonight at midnight" beats "Don't miss out!"
- Curiosity: "We almost didn't run this sale" (use sparingly)
What doesn't work:
- ALL CAPS AND EXCLAMATION MARKS!!!
- Generic phrases like "Huge Sale" or "Best Deals Ever"
- Misleading subject lines that don't match the email content
- Emoji overload (one emoji is fine, five is spam)
Segmentation During Sales
Not every subscriber needs the same message during a seasonal campaign.
VIP customers: Get early access and possibly a bigger discount. They've earned it with their purchase history.
Recent purchasers: Be careful with heavy discounts right after they bought at full price. Consider offering a "price match" or a credit toward their next purchase instead.
Browse-but-didn't-buy: If someone browsed sale items but didn't purchase, a targeted follow-up with those specific products can recover the sale.
Dormant subscribers: A seasonal sale can be a great reactivation trigger. "We haven't heard from you in a while. Here's 25% off to welcome you back."
New subscribers: They signed up for the sale specifically. Hit them with your best offer and make the first purchase experience great.
Post-Season Analysis
After every seasonal campaign, review these numbers:
- Revenue vs. last year: Did you grow?
- Revenue per email: Which emails in the sequence drove the most sales?
- List growth: How many new subscribers did you gain?
- Unsubscribe rate: Did you email too aggressively?
- Best-selling products: What should you feature more prominently next time?
- Cart abandonment during sale: Did your recovery sequence catch sale-period abandoners?
Document what worked and what didn't. Next year's campaign planning starts with this analysis.
Getting Started
If your next seasonal event is approaching and you haven't started planning:
- Right now: Decide on your offer (percentage off, BOGO, free shipping, gift with purchase).
- This week: Write 3-5 emails for the campaign. A teaser, a launch, a mid-sale highlight, a last-chance, and a thank-you.
- Next week: Set up the send schedule and test everything. Preview on mobile. Check all links.
- During the sale: Monitor opens, clicks, and revenue in real time. Send an extra email if something is working well.
Sequenzy's campaign tools let you schedule your full seasonal sequence in advance, so everything fires automatically. Set up the emails, pick the send times, and focus on fulfilling orders while the emails handle the selling.
The biggest seasonal email mistake is perfectionism. A good-enough campaign that ships on time will always beat a perfect campaign that ships late. Get the emails out, measure the results, and improve next time.