BFCM week is the loudest week of the year in every inbox, and the brands that win it made most of their decisions in September and October. This post is about the week itself: how much to send, who hears first, how the offer moves across five days, and how to keep deliverability intact when every sender on earth is peaking at once. What happens to those customers afterward is its own playbook, in turning holiday shoppers into year-round loyalists.
How much is too much in BFCM week?
More than you send in a normal week, less than you think you can get away with, and tiered by engagement. Volume during BFCM is not the problem by itself. Sending peak volume to subscribers who have not engaged in months is.
A workable structure for a brand that sends two to four campaigns a week normally:
- Most engaged subscribers (clicked or bought in 30 to 60 days): one send a day across the core days, with a second send on Black Friday and Cyber Monday for those who have not purchased yet.
- Engaged 60 to 120 days: the main announcements: early access, Black Friday launch, Cyber Monday, final hours.
- Older engagement: one or two sends at most, if your recent deliverability is healthy. If it is not, leave them out.
The tiers matter because inbox providers watch engagement relative to volume. A spike of mail to people who ignore you is the fastest way to damage placement in the week you can least afford it.
Warm up the volume in October
The single most important deliverability decision for BFCM happens before November. If your normal send volume is 50,000 emails a week and you jump to 300,000 in BFCM week, inbox providers see a sudden spike from a sender whose recent history looked very different.
Ramp gradually through October: slightly larger segments, slightly more sends, all to engaged subscribers. By BFCM, your peak volume should look like a reasonable step up from recent weeks, not a cliff. The same principle that governs new sending domains applies here; see domain warming.
Also check, in October, that authentication is aligned, that your complaint rate is comfortably under 0.1%, and that your sunset process has removed the deadweight. Fixing deliverability in BFCM week is too late.
Early access for VIPs
Give your best customers the sale first. Early access works on several levels: it rewards loyalty, it spreads revenue across more days (which spreads volume), and it gives you real data on which offers and products are moving before the general launch.
Structure:
- Two to three weeks before: waitlist or early-access signup for the general list. This is also a capture tool; see the September list-building sprint.
- The weekend before or Wednesday of BFCM week: early access opens for VIPs and the waitlist.
- Black Friday: general launch.
Define VIPs by data, not vibes: top spenders, repeat buyers, or high predicted lifetime value. The tier logic is in VIP tiers in email.
Offer architecture across the five days
Running one identical offer all week tends to front-load revenue and leave you with a dead weekend. Common structures that keep the week moving:
- Tiered by spend: bigger discounts or gifts at higher order values, consistent all week.
- Escalating access, steady offer: the offer stays the same, but each day unlocks a new product, bundle, or gift.
- Day-specific hooks: a gift-with-purchase on Saturday, a bundle on Sunday, free shipping upgrades on Cyber Monday.
Avoid deepening the discount every day. It teaches buyers to wait for the last day, and the habit carries into the rest of the year. The margin-protection thinking behind this is in how to run a sale without training discount shoppers.
The send plan, day by day
Monday to Wednesday: VIP and waitlist early access. Teasers for everyone else.
Thursday (Thanksgiving in the US): lighter touch. A preview or early unlock for engaged tiers.
Black Friday: launch in the morning for engaged tiers. A second send later in the day to engaged non-purchasers, with a new angle (bestsellers, a specific product, a gift idea).
Saturday and Sunday: fewer sends, different angles. Gift guides, bundles, social proof. Not the same email again.
Cyber Monday: a fresh launch-style send, then a final-hours reminder to engaged non-purchasers.
Tuesday: an extension only if you planned it. Unplanned extensions every year teach customers that deadlines are fake.
Live operations during the week
- Suppress purchasers from promotional sends within the same campaign push. A customer who bought on Friday morning should not get “last chance” on Friday night.
- Keep flows running. Welcome, abandoned cart, and browse abandonment flows earn heavily during BFCM. Adjust their offers if the sitewide offer beats the flow offer, so people are not confused.
- Watch inventory. Sold-out products need to come out of emails fast. Low-stock alerts can create honest urgency.
- Monitor complaints and bounces daily. If a segment spikes complaints, pull it from the next send.
Then hand off to retention
The week ends; the program does not. BFCM buyers are the biggest new-customer cohort of the year and the most likely to buy once and disappear. The post-purchase arc that converts them is in the retention post, and the reason January dies when it is skipped is in the Q1 cliff.
BFCM rewards the brand that showed up every week in October. The week itself just collects the interest.
Would you rather hand the whole program over? Our end-to-end Klaviyo account management runs strategy, campaigns, flows, and reporting for you.
Quick answers
How many emails should I send during Black Friday week? Tier it. Engaged subscribers can receive daily sends with extra sends on Black Friday and Cyber Monday; less engaged tiers get only the main announcements.
When should I start preparing Black Friday emails? In late summer. Plan offers by August, build your list in September, and ramp send volume to engaged segments through October.
Should I give VIP customers early access to Black Friday? Yes. Early access rewards loyalty, spreads volume across more days, and shows which offers work before the general launch.
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