Sponsorship request letter generator for newsletters
Updated November 1, 2026 · by Book a Sponsor
Enter your newsletter and pick a brand. The letter fills in with the newsletter that brand last sponsored and a main-slot price for your list size from the printed prices of 364 newsletters, then copy it into an email.
your letter for 12,000 subscribers · business · nothing you type is stored
Subject: Sponsoring Your Newsletter: 12,000 business readers
Sponsorship request · to Wispr Flow · November 2026
Hi [first name],
I write Your Newsletter, a business newsletter sent once a week to 12,000 subscribers. Wispr Flow ran an ad in Pivot & Flow in October 2026, so I thought you might want a spot in mine.
The main slot is $350 per issue and comes with [what is included, such as up to 150 words, an image and your link]. [One result a past sponsor got, such as clicks or sign-ups.]
Want the media kit and the open dates?
[Your name] [Newsletter link]
Follow-up, two or three days later
Hi [first name], bringing this back up in case it got buried. The main slot in Your Newsletter is $350 per issue. Is it worth a look for Wispr Flow this quarter?
[Your name]
Newsletters with 12,000 subscribers ask $225 to $625 for the main slot (middle half of 364 printed prices, read October 25, 2026). The letter uses the middle, $350.
Cite this: Wispr Flow's newest ad: Pivot & Flow, October 30, 2026. Main-slot price for 12,000 subscribers: $350 (middle half $225 to $625, 364 newsletters, prices read October 25, 2026). Source: Book a Sponsor, https://bookasponsor.com/sponsorship-request-letter, data through October 31, 2026.
Business brands to send it to
941 brands sponsored 354 business newsletters in the last 12 months. These are the ones that ran in the most of them, each with the newest business newsletter we saw it in. Pick one to write the letter to it.
brand profiles from the daily sponsor snapshot, data through October 31, 2026 · a brand gets a profile once it has sponsored 5+ newsletters
Have the letters sent for you
free run · about a minute
What goes in a sponsorship request letter
Four sentences do the work. First, who you are and who reads you, in numbers: the list size, the open rate and how often you send. Second, why this brand. The strongest reason is an ad it already ran in a newsletter like yours, because it shows the brand buys this kind of ad and that you looked. Third, the offer: the main slot, what comes with it, and a price. Fourth, one question the brand can answer in a word. The subject line names the newsletter and the reader so the brand knows who is writing before it opens.
Leave out attachments, the history of the newsletter and the full list of packages. When the brand answers, send the media kit or the proposal. The pitch guide has the blank template this letter fills in, and what 30,902 of our pitches got.
Where the numbers come from
The brand and the newsletter it ran in come from Book a Sponsor's sponsor data: ads read in published newsletter issues, one profile per brand seen in five or more newsletters with an ad in the last 18 months. The price is the middle of what newsletters your size ask for the main slot of one issue, from 364 newsletters that print that price and a list size, read on October 25, 2026. For 12,000 subscribers the middle half asks $225 to $625. The yes rates are from 30,902 pitches Book a Sponsor sent for 72 customer newsletters between August 27, 2026 and October 6, 2026.
Questions
What is a sponsorship request letter?
A short email that asks a brand to buy an ad in your newsletter. It says who reads you and how many, why this brand, what the placement costs, and asks one question. It is not the proposal: send the proposal or media kit when the brand writes back.
How do I write a sponsorship request letter for a newsletter?
Keep it to four sentences: who you are and who reads you, why this brand (an ad it ran in a newsletter like yours is the strongest reason), the main slot and its price, and one question. The generator above fills each part in. For 12,000 subscribers the price it uses is $350, the middle of what newsletters your size ask.
Why mention an ad the brand ran somewhere else?
Because it tells the brand why you wrote to it, and it is how you pick who to write to. In 30,902 pitches Book a Sponsor sent for customers, brands with a sign they buy newsletter ads said yes (said they are interested) 6.1 times per 1,000 pitches, against 2.6 for brands with no known newsletter ad. That gap is about which brands to choose. It does not show that naming the ad lifts replies.
How do I greet a sponsor in a letter?
By first name, with the person who buys the ads: "Hi Sam,". "Dear Sir or Madam" and "To whom it may concern" read like a mass email, and a general inbox such as info@ often reaches nobody who decides. If you can't find a name, write to the partnerships or marketing lead by title.
Should I put the price in the first email?
Yes. A brand that has to ask for the price often doesn't ask. One price for the main slot is enough; the other placements go in the media kit.
When should I follow up?
Two or three days later, in the same thread. Of the brands that said yes to our pitches, 76% did it within a day and 91% within three days.
Who should I send it to?
The person who buys the ads: the founder at a small company, the partnerships or growth lead at a larger one. The brands listed above sponsored business newsletters, and each name opens its profile with the newsletters it ran in.
Sources
Brands and the newsletters they ran in: Book a Sponsor's sponsor profiles, ads read in published issues, rebuilt daily, data through October 31, 2026.
Yes rates and reply times: 30,902 pitches Book a Sponsor sent for customers, August 27, 2026 to October 6, 2026, counted October 7, 2026, as published in the pitch guide.
Send it to brands that already buy
Paste your newsletter. Book a Sponsor lists the brands that sponsored newsletters like yours, finds the person who buys the ads, and emails them every day from its own mailboxes. You get the replies and close the deal.
$1 card check gets 200 emails, then a plan from $19/mo · first sponsor reply inside 30 days or your money back