Kit vs Postmark

Pricing

Kit: Free up to 10,000 subscribers, Creator from $39/mo ($33/mo billed yearly)

Postmark: Free for 100 emails/mo, from $15/mo

Description

Kit: Email marketing (formerly ConvertKit) built for creators who want to grow an audience, not manage a CRM

Postmark: Transactional email service built around one promise: your emails hit the inbox

Pros

  • Visual automation builder that is actually understandable
  • Free plan covers up to 10,000 subscribers with unlimited landing pages, forms and broadcasts
  • Tagging system makes subscriber management simple and flexible
  • Industry-leading deliverability: 99%+ inbox placement
  • Emails typically arrive in under 10 seconds
  • Detailed delivery analytics and debugging tools

Cons

  • Visual automations and email sequences need a paid plan
  • Pricing climbs quickly as your list grows: Creator costs $89/mo at 5,000 subscribers
  • Landing page builder is basic compared to dedicated tools
  • More expensive per email than Resend or SendGrid
  • Transactional email only: no marketing campaigns, newsletters, or bulk sends
  • 100 email free tier is barely enough to test with

Details

Kit, known as ConvertKit until its rebrand, was built by Nathan Barry specifically for creators: bloggers, podcasters, course creators, and indie founders who need to grow an email list. It strips away the complexity of tools like Mailchimp and focuses on what actually matters: collecting subscribers, tagging them based on behavior, and sending the right emails at the right time.

The free plan goes a long way, with tagging, segmentation and unlimited broadcasts for up to 10,000 subscribers. The real value is in the visual automations and email sequences, which only come with paid plans. Emails are built in a template-based designer with 40+ templates. If you need pixel-perfect HTML emails, look at MailerLite or Beehiiv instead.

Postmark has been laser-focused on one thing for over a decade: making sure transactional emails hit inboxes, not spam folders. Password resets, order confirmations, shipping notifications: the emails your users actually need to receive. They keep their deliverability high by refusing to send marketing email on the same infrastructure.

You pay more per email than alternatives, but for transactional messages where delivery matters (think: password resets, payment receipts), that premium buys real reliability. If your app sends emails that users rely on, Postmark is the safest bet.

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