Cold Emails Nobody Answers: Send a Sample Made for Their Product Instead of an Intro

You sent a few hundred cold emails this month. The good ones said who you are, named two brands you’ve worked with, and quoted a result. What came back was a handful of out-of-office replies and one “please remove me”. The domain you warmed for three weeks is already showing up in spam folders.

The copy probably isn’t the problem. The format is. Every brand that runs ads gets several of these a day, and they all make the same kind of claim. This page covers a different first email: one link to a short ad you’ve already made for their product, built in the shape of an ad they’re running right now. It explains who to send it to, what the sample should and shouldn’t be, how to write the email, how to follow up, and how to tell whether it’s working.

Why the intro email doesn’t get read

Agency owners on Reddit describe the same thing from both sides of the inbox.

One owner posted in r/agency that emails positioning them as an agency, with “we did this for brand X” and “we can increase X by X%”, got no replies at all. When they rewrote the copy as a plain description of a two-person senior team and what that team takes responsibility for, replies picked up. They hadn’t closed a deal from it yet (r/agency, one poster’s own account). In the same thread, a commenter summed up their own filter in five words: “email contains word ‘ai’ = delete”.

In another r/agency thread, someone on the receiving end said they get five to seven cold emails a day and “they all sound the same” (r/agency). And an agency owner who paid a lead-gen firm about $10k for a pilot with a 20-qualified-leads-a-month guarantee found that a “lead” meant any positive email reply. People asked for case studies; nobody booked a meeting (r/agency, the poster’s own numbers).

Put those together and the reason is plain. A claim like “we lifted ROAS 40% for a skincare brand” can’t be checked from inside an email, and the reader has seen fifty identical ones. So they don’t weigh it. They skip it.

A sample can be checked in twenty seconds. The founder taps the link and either sees their product in an ad that looks like something they’d run, or doesn’t. You’ve also answered the question every intro email leaves open: what would working with you actually look like?

Who to send it to

A sample takes real time to make, so the list has to be short and specific. The best targets are brands already paying for ads, because they’ve already accepted that creative costs money and needs replacing.

Use the Meta Ad Library. It’s public and free at facebook.com/ads/library. Pick a country, search a category term (“magnesium spray”, “dog harness”, “linen bedding”) and filter to active ads. For each advertiser, look at three things:

• How many active ads they have. A brand running six to twenty is testing. One ad usually means they’re not set up to test yet.
• “Started running on” dates. An ad that’s been live for months is very likely one that pays for itself. That’s the structure you’ll borrow. It’s a strong hint, not proof.
• The gap. All statics and no video. The same three videos for half a year. Every ad opening on the same hook. The gap is your reason for writing.

Skip brands that already run dozens of fresh variations a week (they have a creative team) and brands whose only ad started last Tuesday (they have nothing to learn from yet).

Find one person. At a brand under about 50 people, that’s usually the founder or whoever owns growth. One person, not three at the same company.

Keep the daily number small. A commenter in that r/agency thread on burned domains recommended 10–15 highly personalized emails a day per sender (r/agency, their opinion). Treat that as a ceiling. Your real limit is how many good samples you can make in a day, and you should never send a sample-less version of this email to pad the count.

What the sample is (and what it must not be)

One video, 15–30 seconds, vertical, in the shape of their longest-running ad. Write down that ad’s skeleton: what the first two seconds do, how many beats it has, where the product first appears, and how it ends. Then make one new ad with the same skeleton and a different reason to buy. If their winner sells on “replaces three products”, yours might sell on “fits in a carry-on”. New angle, familiar structure. That shows you understand what’s already working for them and can add to it.

Built only from what they’ve published. Use the product photos on their own product pages. Don’t use their ad footage or creator clips, and don’t recreate their ad shot for shot.

The lines you don’t cross:

• Don’t imply a relationship. No “for Brand” lockups that would look like an official ad if someone forwarded it, and no “as part of our work with…”. Put a small “Sample made by [agency], not affiliated with [brand]” at the end.
• Keep it private. Don’t post it, don’t put it in your portfolio, don’t run it. It exists for one inbox. If they ask you to delete it, delete it and say so.
• No invented proof. No star ratings, no “I lost 10 pounds”, no presenter framed as a real customer. In the US, the FTC’s 2024 rule on fake reviews and testimonials covers testimonials from people who don’t exist, AI-generated ones included (FTC, 2024). If they ever run your work, it has to be clean, so make the sample clean too.
• Product accuracy over polish. If the label, colour or shape of their product comes out wrong, don’t send it. A founder notices a wrong cap colour faster than anything else in the video.

Send a link, not an attachment. Attachments hurt deliverability and nobody opens a 40MB file from a stranger. Use a page that plays on a phone, and ideally one that tells you whether it was opened.

The email

Five sentences, plain text, no images, one link.

Subject: one more ad for [product]

Hi Dana,

Your “three products in one” ad has been running since March, so I’m guessing it’s earning its keep. I made one more in the same shape with a different reason to buy (the travel size), using the photos on your product page: [link] (22 seconds).

If it’s useful, I’ll make two more on whichever angle you’d test next. If it isn’t, no reply needed.

Sam, [agency], [postal address] Reply “no” and I won’t email again.

What makes it work:

• The first line proves you looked. You name their ad and how long it’s run. You can’t fake that across a big list, which is exactly why it gets read.
• No credentials paragraph. Your client list can come in the second email, once they’ve asked.
• The ask is small. “Two more on the angle you’d test next” is something they can say yes to without a call.
• No “AI” in the subject or the opening, and no hiding it either. You’re describing the ad, not your tools, and an intro built around “AI-powered” is what readers have learned to delete. If they ask how it was made, tell them exactly: which parts were generated, which were their own photos, what you’d change for a version they’d actually run. Being straight when asked costs you nothing. Being caught dodging costs you the deal.

Legal basics. In the US, CAN-SPAM requires that you identify yourself honestly, include a valid postal address, give a working way to opt out, and honour opt-outs within 10 business days (FTC compliance guide). In Europe the rules differ by country, and in some, Germany being the usual example, unsolicited B2B email generally needs prior consent. Check before you add a country to the list.

Follow-up

Three touches, then stop.

• Day 0: the sample email.
• Day 3–4: one line, in the same thread. If the link was opened, move the conversation forward without mentioning that you can see it: “Want the travel-size angle cut as a 6-second version for Reels too?” If it wasn’t: “In case it got buried, it’s 22 seconds: [link].”
• Day 10: a different, smaller piece: a second hook on the same video, or a static built from the same angle. New thing, not a reminder.
• Day 18–21: close the loop politely. “I’ll stop here. The sample’s yours either way.”

Don’t add a fourth email “just checking in”. A link they didn’t open three times is an answer.

How to tell if it’s working

Reply rate alone will fool you, especially at sample-sized volume where a couple of polite replies swing the percentage. Track the whole chain per batch of sends:

Also track hours per sample. If one sample takes you three hours, this is a 15-a-week channel. If it takes forty minutes, it’s a different business.

Decide your stop rule before you start, not after. For example: after 50 sample emails, if almost nobody opens the link, fix the list and the subject line; if they open it but don’t reply, fix the sample or the ask. Changing everything at once teaches you nothing.

For what it’s worth, we made the same switch in our own outreach. From 9 October 2026, the first email we send carries a link to a video we made for a product in the recipient’s category. It’s too early to say anything about results, so I won’t.

What to do next

Today, open the Meta Ad Library, pick one category you know well, and shortlist ten brands that have an ad running for over a month and a clear gap. Write down the skeleton of each one’s longest-running ad. Make a sample for the first one before you write a single email.

If making the samples is the slow part, AutoWhisper can do that step. Keep prospects in their own workspace so they stay apart from paying clients, paste the prospect’s product page link (it reads the page and pulls their product photos), and generate a UGC-style video, product demo or short story ad from those photos. Each piece gets a share-page link you can drop straight into the email, and the share page shows you whether it was visited. A full video costs 52 credits, and new accounts start with 65, enough to try one on a real prospect. See how agencies set it up at AutoWhisper for agencies. When someone replies yes, Creative Retainers for Agencies covers what to sell them.