Book a Sponsor vs SponsorCal: for newsletter publishers, a booking page for sponsors you find, or pitches that find them?
For newsletter publishers: SponsorCal is a booking page where sponsors pick a date, pay upfront and upload their ad, and it keeps 5% of each booking, Stripe fees included; it does not find sponsors. Book a Sponsor emails brands for you on a plan from $19 a month, and every plan includes a booking page. Pick SponsorCal if sponsors already come to you.
Every fact about SponsorCal comes from its own pages, read 12 November 2026, and links to its source. Our own figures come from our pricing and product settings.
Book a Sponsor (bookasponsor.com) pitches brands to sponsor newsletters.
Book a Sponsor and SponsorCal, side by side
Checked 12 November 2026. Sources for SponsorCal: homepage, pricing and FAQ.
| SponsorCal | Book a Sponsor | |
|---|---|---|
| What it is | A booking page for newsletter sponsorships: a date picker, upfront payment, asset collection and your approval | An outreach service that pitches brands for newsletters |
| How you get sponsors | You bring them: its homepage says it is not a marketplace, so you send sponsors your booking link | It emails the brands that sponsored newsletters like yours and introduces you when one replies |
| Price to you | No subscription; no card to set up | $1 card check gets 200 emails, then a plan from $19/mo, initial emails and follow-ups |
| What it takes from your deals | 5% of each booking, and it pays Stripe's processing fees out of that 5% | No commission, no rev-share |
| Free way to start | Free to set up; the fee comes out of bookings | 200 emails for a $1 card check, then a plan |
| Who can use it | Newsletter creators who already get sponsor inquiries; it lists a Ghost integration | Newsletters on any platform, podcasts and YouTube channels; no subscriber minimum; adult content is refused |
| Who does the selling and the paperwork | You find and sell the sponsors; it runs booking, payment, asset reminders and approval | Book a Sponsor, from its own mailboxes and domains; you read the pitch and can block any brand |
| Where it falls short | It doesn't bring sponsors, and refunding one issue of a multi-issue package goes through its support | The pitches are cold email, so most brands won't answer, and each reply still needs you to close the deal. Each plan includes a set number of emails a month (Starter $19 a month for up to 600 emails a month, Kit $49 a month for up to 1,500 emails a month, Growth $99 a month for up to 3,000 emails a month), and sending stops at the plan's emails. It collects no payments. |
| How you get paid | Sponsors pay when they book; your 95% goes into your own Stripe account as part of that payment | The brand pays you; Book a Sponsor collects no payments |
| Booking | Sponsors pick a date, pay and upload assets through a secure link, with no account | A brand picks a slot and a date on your booking page, and you confirm and send your invoice |
| Ad assets | Reminders 3 days and 1 day before your deadline, then an overdue alert | You agree the copy and deadline with the brand |
| Overselling | Slot limits enforced at checkout, so two sponsors cannot buy one placement | The booking page offers only the open dates you mark |
| Media kit | Its blog says the booking page doubles as your media kit | Built from your issues, with your slots, prices and next open dates |
What does 5% cost on a typical sponsorship?
On SponsorCal's own example, a $500 sponsorship, you keep $475 and it takes $25. On the median main slot at 5,000 to 19,999 subscribers, $300 (121 newsletters, read 11 November 2026 by Book a Sponsor), it would keep $15.
Book a Sponsor takes nothing from the deal; it prints its plans: Starter $19 a month for up to 600 emails a month, Kit $49 a month for up to 1,500 emails a month, Growth $99 a month for up to 3,000 emails a month. They do different jobs: one finds the sponsor, the other takes the booking and the payment.
Can I use both?
Yes. Book a Sponsor finds and pitches the brand; when one says yes, you can send it your SponsorCal link to pick a date, pay and upload the ad. Or use the booking page that comes with every Book a Sponsor plan and invoice the brand yourself.
When SponsorCal is the better pick
- Sponsors already write to you, and you want a better system than "email me".
- You want to be paid before the issue goes out, with no invoices or net-30 terms.
- You want ad assets collected on a deadline, with reminders and an overdue alert, and every ad approved before it runs.
- You publish on Ghost, which SponsorCal lists an integration for.
When Book a Sponsor is the better pick
- You don't have sponsors coming in yet: Book a Sponsor finds the person who buys the ads, writes the pitch and emails it, 50 new brands a day by default.
- You want the brands matched to your newsletter: it pitches the ones that sponsored newsletters like yours in the last 90 days.
- You want a media kit as well as a booking page: every plan builds both from your issues.
- You also have a podcast or YouTube channel: Book a Sponsor covers those too.
- You want a promise on the result: First sponsor reply inside 30 days or your money back.
Sources
- SponsorCal homepage: how it works, the 5% fee, who it is for and its FAQ (read 12 November 2026)
- Book a Sponsor media kit and booking page: what it does and how bookings work (read 12 November 2026)
- Book a Sponsor newsletter sponsorship rates by list size (read 11 November 2026)
- Book a Sponsor pricing and plans, from its product settings (read 12 November 2026)
Plan-by-plan pricing, read on each vendor's own pages: SponsorGap pricing, Who Sponsors Stuff pricing, SponsorLeads pricing, Passionfroot pricing, Paved pricing, OutboundPilot pricing, Kit Newsletter Sponsorships pricing, Swapstack pricing, SponsorDB pricing, Appeared.in pricing, MediaPact pricing, Hecto pricing, SponsorCal pricing, BuySellAds pricing.
Questions
How much does SponsorCal cost?
No subscription. It keeps 5% of each booking and pays Stripe's processing fees out of that 5%, so on a $500 sponsorship you keep $475 (its homepage, read 12 November 2026).
Does SponsorCal find sponsors?
No. Its homepage says it is not a marketplace: you bring your sponsors and set your rates. Book a Sponsor finds and pitches them.
When does SponsorCal pay me?
Sponsors pay when they book, and your 95% goes into your own Stripe account as part of that payment. Moving it to your bank runs on Stripe's timing, per its FAQ.
Does Book a Sponsor have a booking page like SponsorCal?
Yes. Every plan builds your media kit and a booking page where a brand picks a slot and a date. A booking is a request: you confirm it, invoice the brand and collect the payment yourself.
Have the brands that already buy pitched for you
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