ConvertKit (Kit) — Email Marketing and Newsletter Plugin for WordPress

ConvertKit — now branded simply as Kit — was built for people whose business is content: bloggers, newsletter writers, course creators. Where generic email tools treat subscribers as rows in a list, Kit treats them as people with a history — tagged by what they downloaded, which forms they filled, what they bought — and automations that respond to that history. The WordPress plugin brings that world into your site: a Form Builder block that works natively in Gutenberg, automatic form placement below posts, landing page embedding, and even a Broadcasts block that republishes your past newsletters as on-site content. Against WordPress-native options like MailPoet Premium, the difference is philosophical: MailPoet lives inside WordPress, Kit lives in the cloud and embeds gracefully.

The practical pull for creators: Kit handles deliverability, tagging, and automation on its own infrastructure, so you never touch SMTP settings or sending limits. The free tier covers the first 10,000 subscribers with unlimited forms and landing pages — a genuinely useful runway before pricing starts. And if you sell digital products, Kit’s product features pair with the plugin’s membership protection: restrict any post or page to people who bought, with one-time passcode access instead of password friction.

Competitive Features

• Creator-native tagging — subscribers organized by behavior and interest, not just lists
• Form Builder Gutenberg block — design subscription forms in the block editor, no web app switching
• Automatic form placement — forms below posts, pages, or CPTs with per-post overrides
• Membership content protection — restrict posts to product purchasers with passcode access
• Broadcasts block — republish email newsletters as site content automatically
• Landing page embedding — Kit pages displayed on your domain without redirects
• Deliverability handled for you — no SMTP configuration, no sending limits to manage

Key Features

• Gutenberg blocks suite — Forms, Form Builder, Broadcasts, and Product blocks
• [convertkit] shortcode — classic editor and template compatibility
• Subscriber tagging on submit — each form applies its own tags for automatic segmentation
• Product sales with buy buttons — digital products sold and delivered through embedded buttons
• reCAPTCHA spam protection — forms protected against bot subscriptions
• Setup wizards — guided configuration for forms, landing pages, and member content
• Caching plugin auto-configuration — works with major caching setups out of the box

Comparison with Competitors

ConvertKit (Kit) vs MailPoet Premium

Aspect	ConvertKit (Kit)	MailPoet Premium
Architecture	Cloud service + WordPress embed	Fully WordPress-native
Subscriber organization	Behavior-based tags	Lists
Automation	Visual sequence builder	Basic automations
Landing pages	Yes, embeddable	No
Sending infrastructure	Managed by Kit	Your server or sending service
Free tier	First 10,000 subscribers	Up to 1,000 subscribers

Bottom line: MailPoet is the choice when everything must live in WordPress and costs must stay flat — one license, your own sending. Kit is the choice when subscriber intelligence and deliverability matter more than self-hosting, and its free tier is far more generous.

ConvertKit (Kit) vs FluentCRM

Aspect	ConvertKit (Kit)	FluentCRM
Data location	Kit’s cloud	Your WordPress database
Cost model	Monthly, scales with list	One-time license
Email sending	Kit’s infrastructure	Your SMTP (SES, SendGrid, etc.)
Automation depth	Creator-focused visual sequences	Full marketing funnels
CRM features	No	Yes — full contact management
Deliverability management	Handled for you	Your responsibility

Bottom line: FluentCRM is the self-hosted power move — one payment, unlimited subscribers, full CRM depth — but you own the deliverability problem. Kit manages the whole email pipeline for you; you pay monthly for that convenience and its creator-grade automation.

Recommended Stack — email converts best when capture happens everywhere. Pair Kit with Popup Maker Premium to catch abandoning visitors with targeted subscription popups feeding the same tagged subscriber base.

Official Changelog

Version 3.4.1

Release Date: September 9, 2026

• Added: Settings: MCP: UI improvements.
• Added: MCP: Errors are now logged when MCP server creation fails.
• Fix: Settings: MCP: Corrected documentation link.
• Fix: Landing Pages: Anchor links excluded from URL conversion.

Version 3.4.0

Release Date: August 27, 2026

• Added: MCP Server and Abilities/Tools.
• Fix: Shortcodes: Custom Content now supports signed subscriber IDs, fixing a PHP fatal TypeError.
• Fix: Tools: Replaced WP_Filesystem with file_get_contents, fixing a PHP fatal TypeError.
• Fix: Logs now stored outside the plugin folder at wp-content/uploads/kit-logs, ensuring plugin checksum verification passes.
• Updated: WordPress Libraries to 2.6.1.

Version 3.3.9

Release Date: August 19, 2026

• Added: Settings: Deprecation warning when using Legacy Form or Legacy Landing Page.
• Added: Setup Wizards: Member Content checks that the WordPress user can create and publish the chosen post type.
• Added: Setup Wizards: Landing Page checks that the WordPress user can create and publish pages.
• Added: Setup Wizards: Plugin now requires manage_options capability instead of edit_posts.
• Added: Bulk Edit skips posts the user lacks edit_post capability for.
• Added: Caching auto-configuration only runs for users with manage_options capability.
• Added: Post Settings checks edit_post capability on save.
• Added: Category Settings checks edit_term capability on save.

Frequently Asked Questions

Is ConvertKit free?

Yes — Kit is free for the first 10,000 subscribers, including unlimited forms, landing pages, broadcasts, and tagging. Paid plans add visual automation sequences, advanced reporting, and higher subscriber caps.

Can I build forms without leaving WordPress?

Yes. The Form Builder block creates and styles subscription forms directly in Gutenberg — fields, tags, and sequences assigned without opening the Kit web app.

How does membership content protection work?

Create a product in Kit, attach posts or pages to it, and only purchasers see the content. Non-purchasers who try to access enter their email and receive a one-time passcode — no separate membership plugin needed.

Does it work with WooCommerce?

Yes, via Kit’s dedicated WooCommerce integration: customers are subscribed and tagged by purchase, feeding automations that follow up based on what was actually bought.

What happens to my subscribers if I stop using Kit?

Subscribers and their tags live in Kit’s cloud, so the relationship survives plugin removal. Export tools are available, and the site simply stops displaying forms and embeds — no orphaned data on your WordPress install.