Subswell
Start for free
For newsletters that want to grow

Grow through vetted recommendations, on the email platform you already use.

Join a small, curated network. Find relevant partners, swap recommendations for free, or pay for subscribers who pass quality checks.

Start growing free

No monthly fees. No setup fees. Nothing to pay for readers who don't pass.

Two ways to grow, side by side

Use one or both. Every partner is a newsletter our team has reviewed.

Free swaps

Recommend each other with newsletters that suit your readers. No money changes hands, and you see exactly how many readers you send and receive.

Paid picks

Set a price per subscriber (from $1.50) and newsletters recommend you to their new readers. You pay only for subscribers who pass the quality check; the rest is refunded to your balance automatically.

  • Approve every partner, set budgets, caps and countries, pause any time.
  • Standard or Premium quality check: you choose how strict.
  • New readers land straight in your own email platform.

How paid growth works

  1. 1Set your priceChoose what one new subscriber is worth to you.
  2. 2Get recommendedVetted newsletters recommend you to their new readers.
  3. 3We check every readerEach new subscriber goes through our quality check.
  4. 4Pay only for readers who passAnyone who doesn't pass is refunded automatically.

Works with the email platform you already use

Connect it once with an API key. No code, no new tools, no list exports.

  • beehiiv
  • Kit (ConvertKit)
  • Mailchimp
  • MailerLite
  • ActiveCampaign
  • Klaviyo
  • Brevo
  • More on the way

All trademarks and logos belong to their respective owners. Their use indicates compatibility and doesn't imply endorsement.

Your next step

Start growing in three steps

  1. 1Create your free account
  2. 2Connect your email platform (about two minutes)
  3. 3Find swap partners, or set your price and launch a campaign
Start growing free

No monthly fees. Nothing to pay for readers who don't pass.