Kit Vs Mailchimp

TL;DR: Email is King. You know you need to build a list, but which platform should you choose? Switching is a nightmare if you choose wrong.

Choosing between Mailchimp and Kit is the biggest tech decision you will make this year. One is a legacy giant trying to do everything. The other is a streamlined engine built for creators. This guide breaks down the specs so you can pick the right one for your specific workflow.

Check Out Kit | Check Out Mailchimp

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You are sitting at your desk with ten tabs open. You know you need to send a newsletter. You know you need to sell your digital course. But you are stuck looking at pricing pages and feature lists. It's confusing, right?

Pricing pages are dynamic and can get wildly expensive as your list grows.

Mailchimp is the name everyone knows. Kit (formerly ConvertKit) is the one all the “pro” creators talk about and is endorsed by Atomic Habits author James Clear.

Maybe you feel like you're missing out on something. Sometimes the “standard” choice is the safe choice. Other times, it is a trap. I want to look at both tools through the lens of a solopreneur in.

So, with that frame of reference: You don't have a marketing department. You have a laptop and a limited amount of patience.

Let's see which one actually earns its keep.

The Architectures: Lists vs. Tags

This is the most important technical difference. It sounds like “tech talk,” but it dictates how you spend your Tuesday mornings.

Mailchimp (along with Aweber) uses an older list-based system. Think of it like a set of buckets. You have a “Newsletter” bucket and a “Customer” bucket. If Sarah joins both, she is in two buckets.

Here is the problem: Mailchimp charges you for Sarah twice.

If you want to send an email to everyone except people who already bought your product, you have to build a “Segment” across multiple lists. It is clunky. It feels like 2010.

Kit uses a subscriber-centric system. There is only one list. Everyone is in the same pool. You use Tags to tell them apart.

If Sarah buys your course, you add the tag “Customer.” If she clicks a link about SEO, you add the tag “SEO Interest.”

You can then send an email and tell Kit: “Send this to everyone with the ‘SEO Interest' tag, but exclude anyone with the ‘Customer' tag.”

It is fast. It is logical. You never pay for the same person twice. For a solopreneur watching every dollar, this is a major win for Kit.

Pro Tip: Tags can get out of hand. I recommend documenting in a Google Docs exactly what the tags mean. A few thousand days down the road, you'll thank me.

The Affiliate Link Reality

We need to talk about how you make money in 2026.

Most solopreneurs use affiliate marketing. You recommend a book on Amazon, like this one on How To Market On Reddit that I wrote. You link to a software tool you love. You get a small commission. It is a standard part of the creator economy.

Little wins.

Mailchimp has a complicated relationship with affiliate links. Their terms of service are notoriously vague. They generally prohibit “affiliate marketing” as a business model.

I have seen accounts get flagged and shut down because they included too many affiliate links in a single blast. Mailchimp protects its deliverability at all costs. They don't want to be associated with “spammy” affiliate behavior. This is a business risk.

If your brand relies on recommending products, you are taking a risk with Mailchimp. You are building your house on shaky ground.

Kit was built by creators for creators. They understand affiliate marketing. They allow it. They even encourage it. As long as you aren't a literal spam bot, your account is safe. This one factor is usually the deal-breaker for most people I talk to.

Automation and Pacing

You want your email to feel like a conversation. You don't want it to look like a corporate brochure.

Mailchimp gives you “Customer Journeys.” They are visual and pretty. You can drag and drop steps. It works well if you have a massive e-commerce store with 500 SKUs.

But it feels heavy. There are too many options you don't need.

Kit’s automation builder is lean. You set a trigger (like “Joins Facebook Group”) and an action (like “Send Welcome Sequence”).

I like the pacing in Kit. It encourages text-based emails. Why? Because text-based emails actually get read. Massive HTML layouts with images and “Buy Now” buttons often end up in the Promotions tab. (Delivery beats pretty, IMO.)

Kit makes it easy to look like a human. And I think people want to connect with real creators.

The “Managed Contact” Tax

Let's talk about the bill.

Mailchimp charges you for “contacts.” This includes people who have unsubscribed. If you have 2,000 active subscribers and 1,000 people who unsubscribed over the last year, you are paying for 3,000 people.

You have to manually go in and archive or delete those unsubscribed people to lower your bill. It is a chore. It feels like Mailchimp is penalizing you for having a growing list.

Kit only charges you for “Managed Subscribers.” If someone unsubscribes, they don't count toward your bill. You only pay for the people you can actually reach.

This transparency matters when you are a solopreneur. You want your expenses to match your actual results.

Moving the Needle: Migration Guide

If you are already on Mailchimp, you might feel “stuck.” The idea of moving sounds like a disaster.

It isn't. I have done this move for several clients. It takes about an hour if you follow these steps.

1. The Cleanup

Don't bring your trash with you. In Mailchimp, go to your audience and filter for “Unsubscribed.” Export them just for your records, then delete them from Mailchimp. You only want to pay for the “Subscribed” segment.

2. The Export

Download your “Subscribed” list as a CSV file. Mailchimp will email you a link to a zip file. Open it. Keep the columns simple: Email, First Name, Last Name.

3. Prepare Kit

Log into Kit. Create a Tag called “Mailchimp Migration.” This ensures you can find these people later if something goes wrong.

4. The Import

Click on “Subscribers” then “Import.” Upload your CSV. Map the “Email” column to the “Email” field. Map “First Name” to “First Name.”

5. Update Your Forms

This is the part people forget. If you have a signup form on your website or in your Instagram bio, you must replace the Mailchimp link with a Kit link immediately.

If you get stuck, Kit has a very detailed migration guide that covers things like moving your automated sequences and landing pages.

If you have more than 5,000 subscribers, Kit will actually do the migration for you for free. They have a team that handles the heavy lifting. Well worth it.

Timely note: Mailchimp is raising prices soon. If you're evaluating Kit as an alternative, new customers get 25% off annual plans through April 30 2026, plus dedicated migration support. Learn how to switch with the promo here.

New customers get 25% off Kit's annual plans through April 30, plus dedicated migration support.

The Creator Network

In 2026, growth is hard.

Mailchimp expects you to grow your list yourself. You run ads. You post on social media.

Kit has something called the Creator Network.

When a subscriber signs up for another creator's newsletter, that creator can recommend yours on the “Thank You” page. You can do the same for them. It is a massive referral engine – like Substack. It's leverage.

I have seen lists grow by 20% in a month just from these recommendations. It is free traffic. It is high-quality traffic. Mailchimp simply doesn't have a direct answer for this.

Technical Specs Comparison

Feature	Kit	Mailchimp
System	Tag-based	List-based
Affiliate Links	Allowed	Restricted
Landing Pages	High-conversion templates	Generic layouts
Automation	Visual & intuitive	Complex Journeys
Deliverability	Optimized for text/creators	Optimized for retail/commerce
Support	Fast, human-led	Primarily bot/help docs on lower tiers

Forms and Landing Pages

As a solopreneur, you need to test ideas. You have a new lead magnet idea at 11 PM on a Tuesday.

Mailchimp’s landing page builder is fine. It works. But it feels slow. The designs are a bit “corporate.”

Kit’s landing pages are built for conversion. They look like the pages the top 1% of creators use. They are mobile-responsive by default. I can build a landing page, connect it to a tag, and start collecting emails in under ten minutes.

Speed wins in business. Kit is faster.

I also really like Kit's API. I often will build a landing page with vibe coding, and connect it via the API.

The Final Verdict

If you are a traditional small business selling physical products (like a local bakery or a boutique), Mailchimp might be the better fit. Their e-commerce integrations are deep. Consider that.

But if you are a solopreneur building a brand, the choice is clear.

You need tags. You need to be able to use affiliate links. You need a simple automation builder that doesn't require a PhD. Tags are much more versatile for marketers than buckets.

Mailchimp is trying to be a “Marketing Platform.”

Kit is an Audience Growth Engine.

And in terms of UI, Kit is the superior tool. It looks and feels better. I know that's hard to quantify. But it's my opinion.

Stop fighting with buckets and lists. Start tagging your people and growing your brand.

Get Started With Kit Today

Already with Mailchimp? Easy button to switch here.

PS – Need advice on software? Ask me. I've used just about everything under the sun.