The Kit alternative
priced per email

Kit, formerly ConvertKit, is built for creators and charges by subscriber count. Plunk charges only for emails sent, stores contacts for free, and sends transactional email from the same account.

How Plunk differs from Kit

October usage

48,210 contacts
Free
10,000 emails sent
$10.00
Total$10.00

Pay per email, not per subscriber

Kit’s free plan stops at 10,000 subscribers and leaves out automations, and paid plans rise with every subscriber. Plunk stores contacts for free and bills only for emails sent.

Password reset

To ana@acme.com · 2m ago

Delivered

Receipt #3980

To tom@acme.com · 9m ago

Delivered

Transactional email included

Send password resets and receipts through the same API as your newsletters. Kit does not send transactional email.

Plunk CloudHosted in the EU
Your own serversSame open-source code

Open source, and yours to host

Plunk is AGPL-3.0 licensed and runs on your own servers with Docker if you want it there. Kit is proprietary and cloud-only.

Which one is right for you?

Choose Plunk if

  • You send email from your product and want an API for it
  • You want receipts and newsletters from one platform
  • You have a large list that you only email now and then

Choose Kit if

  • You need landing pages and forms built in
  • You sell courses or digital products to your audience
  • You want a visual tool made for non-technical creators

Feature by feature

FeaturePlunkKit
Pricing modelPay per emailPay per subscriber
Target audienceDevelopersCreators/marketers
Open source
Self-hostable
Transactional emails
Marketing campaigns
Workflow automation
Landing pages
Product selling
Built forProduct emailCreator audiences

Frequently asked questions

Stop paying for subscribers you rarely email.

Start on the free plan with 1,000 emails a month, no credit card needed. When you need more, every email is $0.001, with unlimited contacts and every feature included.