# Where can you actually advertise a newsletter? > To advertise a newsletter you must buy the hardest thing online: an email address. The channels that genuinely add subscribers, and what each one costs. Published 2026-08-31 · 6 min read · advertise-a-newsletter, advertising, newsletters Canonical: https://bidsurvivor.space/blog/where-to-advertise-a-newsletter --- Deciding where to advertise a newsletter is an unusual media purchase, because of what you are asking a stranger to hand over. Not a click, not a signup they can abandon — an email address, with the implied promise that you will use it repeatedly. That is the highest-friction conversion in ordinary consumer marketing, and every channel below prices it in. Acquiring subscribers through paid social or paid recommendations commonly lands somewhere around **$2–5 each**, and the spread inside that range is mostly quality. Here is the whole map, cheapest first. (Disclosure: written by [BidSurvivor](https://bidsurvivor.space), which appears in the paid tier, labelled.) ## Free, and still the best value in the category **Cross-promotions.** One newsletter of roughly your size mentions you, you mention them. It costs a paragraph and it trades warm readers for warm readers, which is why it remains the single best subscriber-for-subscriber deal available. The work is not the swap, it is the finding: you need a handful of peers with an overlapping audience and a similar list size, and building that list of peers is a month of reading other people's newsletters. **Recommendation networks.** [beehiiv](https://www.beehiiv.com), Substack and Kit all ship a built-in recommendation system that shows other letters at the moment somebody subscribes to yours — the highest-intent moment there is. The mutual, unpaid version is free and works. The paid version, where you buy recommendations by the subscriber, is where that $2–5 figure mostly lives, and it is worth watching what those subscribers do next: readers who arrived from a checkbox open less than readers who arrived from a sentence somebody wrote about you. **Directories.** Low traffic individually, free, and permanent. An evening's work once, then leave them alone. ## The one metric that makes every quote comparable Before the paid tier, settle the arithmetic, because it turns "is $250 a lot?" into a question with an answer. Cost per subscriber is the price divided by (visitors sent × your landing page's signup rate). Before spending on subscribers, make sure your sending domain passes the basics — the [email deliverability checker](/tools/email-deliverability) tests the configuration. If a **$250** placement sends 300 people and 12% of them subscribe, that is 36 subscribers at roughly **$7 each** — expensive against the $2–5 benchmark, and worth it only if those subscribers are unusually well matched. The same placement at a 30% signup rate is $2.30 a subscriber and an obvious repeat purchase. Two consequences fall out of that formula and both are uncomfortable. First, your signup rate matters more than the price you negotiate: doubling the rate halves the cost of every future placement, and it is the only variable you fully control. Second, you cannot evaluate any quote until you know that rate, which means the first thing to buy is not advertising at all but a measurement. ## Paid, priced for a real test **Sponsoring other newsletters.** The classic move, and the best-fitting one, because you are buying attention from people who have already proved they read email. Small niche letters start around **$50**; marketplaces like [Paved](https://www.paved.com) publish rates across thousands of them, and writers approached directly will often quote less than their marketplace listing. Ask for the last three sponsors and email one of them — most will tell you what happened, and a sponsor who will not is information too. **A time-boxed ad slot.** Ours, so check the claims rather than taking them. [BidSurvivor](https://bidsurvivor.space) sells two twelve-hour slots a day on one board by live auction. The first brand into an empty slot pays **$0**, with no account and no card; taking a held slot starts at $1.00 and no bid can exceed $5,000; every visitor starts with $100 of house credit before signing up for anything. Each brand's opens and click-throughs are published, so a newsletter can find out for nothing whether cold web traffic converts to subscribers at all, and what its landing page's signup rate really is. For most newsletters the honest answer at this scale is "a trickle" — but a measured trickle is what makes the next quote legible, and the test costs nothing. If you get outbid mid-slot you lose the slot and the money, which is the rule we would most want a buyer to read before bidding. **Paid social.** It works, at scale, with a dedicated landing page and constant creative rotation. Below a few hundred dollars of learning-phase spend it mostly teaches you which creative does not work, which is knowledge, but expensive knowledge. **Paid recommendations.** Fast, priced per subscriber, and the easiest to over-buy. Cap the spend, then look at week-four open rates before renewing. A cohort that opens at half your list average is not a cohort, it is a bill. ## Where display fits, and where it does not A newsletter is one of the few products where a display placement and a sponsorship are genuinely comparable purchases, because both end at the same landing page and both can be divided by subscribers gained. The head-to-head — cost per warm visitor against cost per cold one, and where each wins — is worked through in [newsletter sponsorship vs display ads](/blog/newsletter-sponsorship-vs-display-ads). The short version: sponsorships transfer trust and convert at multiples of cold traffic, display gives you timing control and the ability to run five different pitch lines in a week. Use display to learn what to say and sponsorships to say it to the right people. ## The order that makes sense 1. Directories and mutual recommendations this week. Free, permanent, done once. 2. One cross-promotion a month, forever. This is the compounding channel. 3. A cheap or free test — [a $0 slot](/blog/how-bidsurvivor-works), or a $50 placement in a small letter ([how to spend exactly fifty dollars](/blog/50-dollar-advertising-budget)) — to establish your signup rate. 4. Real sponsorship money only once you can do the division in ten seconds. The pattern in that list is the same one that governs every small budget: the free channels are not a warm-up for the paid ones, they are the thing that makes the paid ones affordable. Broader budget arithmetic, if you want to see it applied to a whole product rather than a list, is in [where to advertise a startup with $200](/blog/where-to-advertise-a-startup-with-200-dollars).