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FlockStack, beehiiv and Substack side by side

We built FlockStack, so read this as a vendor's page. Every figure about the others comes from their own pricing pages on the date shown, with the link. Where they are the better pick, it says so.

What each one charges and keeps

FlockStack, beehiiv and Substack compared row by row, as published on October 20, 2026
FlockStackbeehiivSubstack
Free plan$0: 2,500 subscribers, 10,000 emails a month, with a small “Sent with FlockStack” link$0 up to 2,500 subscribers, no automationsFree to publish at any size
What you pay forThe emails you send: plans from $9 a month for 25,000 emailsYour subscribers, with unlimited sends: Lite plans start at $109 a monthNothing up front. A share of what readers pay you instead
5,000 subscribers$9 a month (Starter, 25,000 emails)$109 a month on Lite, $95 billed yearly$0 platform fee
25,000 subscribers$29 a month (Growth, 125,000 emails)$199 a month on Lite, $169 billed yearly$0 platform fee
100,000 subscribers$109 a month (Scale, 500,000 emails)$469 a month on Lite, $399 billed yearly$0 platform fee
Cut of paid subscriptions0%. Readers pay your own Stripe account; Stripe's fees apply0%. Stripe's fees apply10%, and card fees
Past your plan's emails$0.15 per 1,000 extra emails, up to a monthly limit you setSends are unlimited; the price follows subscribersNo sending limit to pay for
Open sourceYes, AGPL-3.0. Run it yourself or use FlockStack CloudNo, hosted onlyNo, hosted only

Checked . Sources: beehiiv.com/pricing, substack.com/going-paid. Prices are USD a month, billed monthly unless it says yearly, and change: check each page before you decide.

The same subscribers, a weekly newsletter

FlockStack's price for each plan against beehiiv's Lite price for the same number of subscribers.

FlockStack Free, $0

2,500 subscribers, 10,000 emails a month

2 automations, besides the welcome email

beehiiv Free, $0

Up to 2,500 subscribers

No automations

A month of FlockStack and of beehiiv for a weekly newsletter to the same subscribers, billed monthly
A weekly newsletter toFlockStackbeehiivYou save
5,000 subscribersFlockStack Starter, 25,000 emails a month$9/mo$109/mo92%
25,000 subscribersFlockStack Growth, 125,000 emails a month$29/mo$199/mo85%
50,000 subscribersFlockStack Pro, 250,000 emails a month$59/mo$299/mo80%
100,000 subscribersFlockStack Scale, 500,000 emails a month$109/mo$469/mo77%
400,000 subscribersFlockStack Max, 2,000,000 emails a month$299/moEnterprise only on beehiiv

Billed monthly.

Worked out, with the assumptions

Card fees are left out of every column. Substack's cost is its share of what your readers pay.

  • A weekly free newsletter

    5,000 subscribers, a weekly issue: 25,000 emails a month.

    FlockStack
    $9/mo
    Starter plan
    beehiiv Lite
    $109/mo
    Unlimited sends
    Substack
    $0/mo
    Nothing to publish
  • A weekly newsletter with paid readers

    25,000 subscribers, a weekly issue, 5% paying $8 a month: 125,000 emails a month, $10,000 a month from readers.

    FlockStack
    $29/mo
    Growth plan
    beehiiv Lite
    $199/mo
    Unlimited sends
    Substack
    $1,000/mo
    10% of paid subscriptions, nothing to publish
  • A daily newsletter to a big list

    100,000 subscribers, a daily issue: 3,000,000 emails a month.

    FlockStack
    $449/mo
    Max plus 1,000,000 extra emails ($150.00)
    beehiiv Lite
    $469/mo
    Unlimited sends
    Substack
    $0/mo
    Nothing to publish

Where we are the weaker pick

  • Substack costs nothing until you earn

    If you want to publish for free at any size and don't mind giving up 10% of paid subscriptions, Substack's price is hard to beat, and it brings readers with it. FlockStack has no reader network of its own beyond a small recommendations directory.

  • A daily sender pays more here than a weekly one

    FlockStack counts emails, so a daily newsletter to a big list narrows the gap with beehiiv's unlimited sends. The scenarios below show a case where the gap is only a few percent.

  • We have no mobile app and no enterprise paperwork

    FlockStack has no app of its own, no SOC 2 report and no SSO. If a buyer's checklist needs those, FlockStack is not ready for you yet.

  • This page leaves features out

    It compares prices and fees we could check on each company's own pages on the date shown. It does not compare editors, ad networks, recommendation features or deliverability, which we haven't tested side by side.

Your list isn't one of these three. Enter your own subscribers, sends and paying readers in the newsletter cost calculator, which adds Kit and Mailchimp. Head to head, with the facts behind each claim: FlockStack vs beehiiv and FlockStack vs Substack.

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