---
title: "How do I get my sending ready for Black Friday so my emails aren't throttled?"
slug: prepare-sending-for-black-friday
description: "How far ahead to ramp up email volume before Black Friday, who to email first, and how to check your limits so your biggest sends reach the inbox."
created_at: "2026-10-09"
updated_at: "2026-10-09"
humans: ["jp-valery"]
featured: true
---

Black Friday and Cyber Monday (BFCM) aren't a single weekend anymore: sales now start in early November and run through the end of the month. Your customers expect to hear from you, and it's one of the best moments of the year to reach them.

The dates are never a surprise, yet few consider email preparation as a vital step in the sale season. A Chief Marketing Officer I worked with summed it up well: "_We know it's coming. We have the dates for the next hundred years, yet we always start working on it right after Halloween, when we should have thought it through at the beginning of the summer._"

Waiting until November is risky because inbox providers like Gmail judge your mail against your recent sending history. If you suddenly send 5 times your usual volume, or email contacts you haven't sent to in months, they slow your mail down or route it to spam, right when every email counts.

A few weeks of preparation make the difference. Generally speaking, start raising your volume at least 4 weeks before Black Friday. Begin with your most engaged contacts and add less recent ones week by week, so your volume during the sale looks like a natural continuation of your normal sending. Here's how to get ready.

## How far ahead should you start preparing for Black Friday?

The senders with the strongest Black Friday results start planning in the summer, months before they send the first BFCM email.

- **In the summer**, estimate how many emails you'll send on your biggest day, and check whether your email plan and provider limits can handle that volume.
- **6 to 8 weeks out**, clean your list and group your contacts by when they last opened or clicked.
- **4 weeks out**, start increasing your volume, beginning with your most engaged contacts.
- **1 to 2 weeks out**, send your peak volume on a regular day, so the sale isn't the first time inbox providers see it.

If you're sending from a new domain, or from one that has been quiet for months, give yourself more time and follow the guide on [how to warm up a new domain](/guides/email/new-domain-emails-going-to-spam).

## How should you ramp up email volume before Black Friday?

To develop a plan, identify how many emails you plan to send on your biggest day. Your domain needs to handle that volume comfortably before the sale starts.

Grow your volume by audience, not just by count. Inbox providers build your reputation from how recipients react, so the first people to get more email from you should be the ones most likely to open it.

<Table
  data={{
    headers: ["When", "Who to email"],
    rows: [
      ["4 weeks out", "Contacts who opened or clicked in the last 30 days, at your normal cadence"],
      ["3 weeks out", "Add contacts who engaged in the last 60 days"],
      ["2 weeks out", "Add contacts who engaged in the last 90 days"],
      ["Black Friday week", "The same audience, at your planned peak volume"],
    ],
  }}
/>

Grow your daily volume gradually as you add each group. [Google's sender guidelines](https://support.google.com/a/answer/81126) specifically warn against doubling it:

> For example, immediately doubling previously sent volumes suddenly could result in rate limiting or reputation drops.

In practice, keep each day's increase under 50% of the day before.

- **Keep sending in early November.** Your reputation cools when you pause, even for a couple of weeks.
- **Check your numbers before each new group.** Look at bounce and complaint rates before you widen the audience. If they rise, hold your volume until they settle.
- **Leave out contacts who stopped engaging.** Black Friday is the worst day to email someone for the first time in 6 months, or someone who has never opened your emails at all.

Our [warm-up calculator](/docs/knowledge-base/warming-up?type=existing#warm-up-calculator) builds a day-by-day schedule from your target volume and date, and works for any email provider.

## How should you check your sending rate and limits before the sale?

Before the day, work out how fast you need to send. Divide your total recipients by the number of seconds between your start time and your deadline, and you get the rate to aim for.

For example, a campaign to 120,000 contacts that needs to land between 6 a.m. and 10 a.m. has 14,400 seconds to go out: about 8 emails per second, or 500 a minute.

Send at the slowest rate your deadline allows. A steady flow is what inbox providers expect from a legitimate sender, and [Google's guidelines](https://support.google.com/a/answer/81126) say it directly: "Avoid sending email in bursts."

Your email provider also needs to carry the load. Most providers have 4 separate limits, and a Black Friday spike can hit any of them:

<Table
  data={{
    headers: ["Limit", "What to check"],
    rows: [
      ["Requests per second", "50,000 order confirmations in the first hour of a sale is about 14 per second. Sending one email per API call puts you over a 10 requests per second limit. In batches of 100, you need 1 request every 7 seconds."],
      ["Daily quota", "Some plans, often free ones, cap how many emails you can send per day."],
      ["Monthly quota", "November can use several times your usual monthly volume. Check whether your plan bills overages or stops sending."],
      ["Marketing contacts", "Plans priced by contact count can tip over mid-weekend when a Black Friday signup popup brings in thousands of new contacts."],
    ],
  }}
/>

A `429 Too Many Requests` error on the day of the sale means you've hit your provider's API rate limit, not an inbox provider's filter. Queue your sends instead of firing them all at once.

Ask your provider for any increase at least 1 to 2 weeks ahead, and come with numbers: your peak volume, your time window, and the requests per second you need.

## Should you get a dedicated IP before Black Friday?

No. A new dedicated IP starts with no reputation, so it needs its own warm-up, and a seasonal spike is exactly the kind of sending pattern that hurts one. Dedicated IPs suit senders with high, steady volume all year round.

Inbox providers also weigh your domain's reputation more than your IP's, so a new IP can't make up for a domain that isn't ready. [Read more on dedicated IPs](/blog/do-you-need-a-dedicated-ip).

## Can you send a Black Friday campaign from a new domain next week?

Most likely not. A domain with no sending history can't carry a 50,000-email day within a week. Verifying the domain and setting up SPF, DKIM, and DMARC prove the mail comes from you, but they don't build reputation. Only sending email people want, over time, builds the reputation needed for a larger email campaign.

In a week, a realistic goal is a few thousand emails to your most engaged contacts, increasing gradually each day. Our [warm-up schedule](/docs/knowledge-base/warming-up) for a new domain reaches up to 2,000 emails a day by day 7.

If you need a new domain anyway, use a subdomain of your established one. A new subdomain like `news.example.com` on an established `example.com` [starts with more trust](/guides/email/new-domain-emails-going-to-spam#how-to-warm-up-a-new-subdomain-when-the-root-domain-has-a-reputation) than a brand-new domain.

If you're moving to a new email provider and the move isn't finished 3 to 4 weeks before Black Friday, send your Black Friday campaigns from your current provider and switch after the holidays.

## Should you email unengaged subscribers during Black Friday?

No. It's tempting to email your whole list on the off chance a few old contacts convert, but the risk outweighs the reward.

Contacts who haven't opened or clicked in months are the most likely to bounce or complain. Some old addresses are even spam traps: abandoned inboxes that providers reuse to catch senders who don't clean their lists. A spike in bounces and complaints during your biggest week can damage your domain's reputation for every email you send afterward, receipts included.

Follow [audience hygiene](/docs/knowledge-base/audience-hygiene) practices: limit marketing email to contacts who opened or clicked in the last 6 months, and remove addresses that bounce.

To win back older contacts, send them a re-engagement email well before the season, and keep your Black Friday offer for the people who are still listening.

## Why do Black Friday emails go to spam?

Volume isn't the only reason Black Friday emails land in spam:

- **The content looks like spam.** Sale emails center on offers, and an email that's just a discount code and a large image looks a lot like spam. Write it like your other emails, with real text and a clear sender.
- **Gmail enforces its rules more strictly.** Since November 2025, Gmail has been ramping up enforcement against senders who don't meet its [sender requirements](/blog/gmail-and-yahoo-bulk-sending-requirements-for-2024), including temporary and permanent rejections. Check your SPF, DKIM, DMARC, and one-click unsubscribe before the season starts.
- **The inbox is crowded.** Recipients get more offers during Black Friday week than at any other time of year, so engagement drops for everyone.

Consider sending your offers earlier in November, when people have more budget left and you face less competition in the inbox. Taking a break during Black Friday weekend itself, while everyone else is sending, can also be a smart move.

## What should you do when Gmail delays your Black Friday emails?

When emails to `@gmail.com` addresses show as delivery delayed, check the SMTP response: a rate-limit deferral means Gmail is throttling you.
A throttle can indicate you're sending more than your history supports, in which case Gmail may accept part of your mail and temporarily defer the rest. Your provider retries the deferred emails automatically.

There's no way to lift a throttle on the day. Lower your sending rate, let the retries go through, and don't move the traffic to another domain to get around it. [What to do when Gmail throttles you](/guides/email/new-domain-emails-going-to-spam#what-to-do-when-gmail-throttles-you-mid-warm-up) walks through the error and the steps.

The only real fix is the ramp in the weeks before the sale, which is why starting early matters so much.

## What should you do with the new subscribers you gained during Black Friday?

Black Friday brings in a wave of new subscribers, and not all of them will stick around. Consider why each one signed up. People who subscribed for your content or created an account are usually good-quality contacts. People who signed up for a giveaway or a coupon are more likely to ignore your next emails or unsubscribe.

Keep Black Friday signups in their own segment so you can track them separately. For the lower-quality ones, apply a stricter sunset policy: stop emailing them sooner when they don't open or click than you would for the rest of your list.

## How should you let subscribers opt out from holiday email without unsubscribing?

Give people a choice beyond unsubscribing from everything. Subscription topics, such as "Sales and promotions" and "Newsletter", let recipients turn off holiday offers and keep the emails they still want.

Link to your preference page from every email, and mention it in your first sale email. A subscriber who opts out of promotions for the season is better than one who unsubscribes or, worse, marks your email as spam.

## Black Friday checklist, from summer to the sale

1. **Summer:** Estimate how many emails you'll send on your biggest day, and over what time window.
2. **Summer:** Compare your plan's rate limit, daily and monthly quotas, and marketing contact limit to your peak-day estimate.
3. **Summer:** Set up subscription topics so people can opt out of promotions without unsubscribing.
4. **6 to 8 weeks out:** Confirm SPF, DKIM, DMARC, and one-click unsubscribe are in place.
5. **6 to 8 weeks out:** Remove bounced addresses and contacts with no engagement in 6 months. Group the rest by last engagement: 30, 60, and 90 days.
6. **4 weeks out:** Start the ramp with your 30-day engaged contacts, at your normal cadence.
7. **2 to 4 weeks out:** Add your 60- and 90-day contacts, keeping each day's increase under about 50%.
8. **At least 2 weeks out:** Ask your provider for any limit increases, with numbers.
9. **Black Friday week:** Spread each send over hours, at the slowest rate your deadline allows.
10. **Throughout the season:** Keep sending in early November, and slow down as soon as inboxes start deferring your emails.

## Other details to keep in mind

The most common mistake is pausing sends in early November to save your audience for the sale. Your reputation cools while you wait, and your biggest sends of the year go out from a colder domain, right as volume spikes across every inbox.

Plan your ramp for the whole season, not just the weekend. Your volume needs to hold up from early November through Cyber Monday on November 30.

Keep order confirmations and receipts on their own subdomain, such as `orders.example.com`. A promotion that draws complaints then can't delay the emails your customers are waiting for.

## How should you prepare for Black Friday with Resend?

<Callout type="info">

- Send campaigns as [Resend Broadcasts](/docs/dashboard/broadcasts/introduction). A broadcast is 1 request, however many contacts it reaches, and we handle the queuing, throttling, and unsubscribes, including the one-click unsubscribe header.
- Check your contact count on the [Usage page](/settings/usage). Past your plan's contact limit, broadcasts won't send until you upgrade.
- For emails sent from your app, use [batch sending](/docs/dashboard/emails/batch-sending): up to 100 emails count as 1 request against the default 10 requests per second [rate limit](/docs/api-reference/rate-limit). [Contact support](/help) ahead of time to raise it.
- Segments are static, so build your engagement tiers yourself. Update a `last_engaged_at` [contact property](/docs/dashboard/contacts/properties) from `email.opened` and `email.clicked` [webhooks](/docs/webhooks/event-types), then [add contacts](/docs/api-reference/contacts/add-contact-to-segment) to 30-, 60-, 90-, and 180-day Segments.
- Plan your ramp with the [warm-up calculator](/docs/knowledge-base/warming-up#warm-up-calculator), and check bounce and complaint rates on the [Metrics page](/metrics) or with the [Metrics API](/docs/api-reference/emails/get-metrics) before you add the next tier.
- Let people opt out of promotions only with [Topics](/docs/knowledge-base/why-use-topics).

</Callout>

## FAQ

**Is it normal to lose subscribers during Black Friday?**

Yes. Sales season is also unsubscribe season. When people open an inbox with hundreds of unread offers, many take the chance to clean up their subscriptions, like spring cleaning in November. Unsubscribes don't hurt your reputation, but spam complaints do, so make unsubscribing easy.

**Should I stop sending in early November to save my list for Black Friday?**

No. Inbox providers base your reputation on your recent sending, and it cools when you stop. Keep your normal cadence and ramp up from there.

**Can a Black Friday send make me a bulk sender for Gmail?**

Yes. Gmail treats anyone who sends close to 5,000 messages to personal Gmail accounts within 24 hours as a bulk sender, and once you reach that threshold, the status is permanent. Bulk senders must meet Gmail's stricter requirements, [including one-click unsubscribe](/blog/gmail-and-yahoo-bulk-sending-requirements-for-2024#one-click-unsubscribe).

**How many emails can I send on Black Friday?**

There's no fixed limit. Inbox providers compare your volume to your recent history, so what you can send on the day depends on the volume you've built up in the weeks before.

## Sources

- Google, [Email sender guidelines](https://support.google.com/a/answer/81126), accessed October 9, 2026
- Google, [Email sender guidelines FAQ](https://support.google.com/a/answer/14229414), accessed October 9, 2026
- Resend, [Usage limits](/docs/api-reference/rate-limit), accessed October 9, 2026
- Resend, [Domain and IP warm-up guide](/docs/knowledge-base/warming-up), accessed October 9, 2026
- Resend, [Audience hygiene](/docs/knowledge-base/audience-hygiene), accessed October 9, 2026