HEAD TO HEAD
Mailchimp vs ConvertKit: could you build either?
Sending email is easy. Landing in the inbox is not. Both verdicts hinge on whether you're willing to own deliverability, and Mailchimp's cheaper entry price makes that trade worse.
Side by side
| Mailchimp | ConvertKit | |
|---|---|---|
| verdict | Borderline | Borderline |
| vibe score | 95/100 | 95/100 |
| time to code | a weekend | a weekend |
| their price | $13/mo | $25/mo |
| per year | $156/yr | $300/yr |
| agent cost to build | $43–$86 | $43–$86 |
| hosting after | $0/mo | $0/mo |
| category | email marketing | email marketing |
| last checked | 2026-08 | 2026-08 |
These land in the same place — both borderline. Both are a weekend of work. ConvertKit lists at $25/mo against $13/mo for Mailchimp, a difference of $144 a year.
Why Mailchimp gets Borderline
- List management (subscribe, unsubscribe, tags, segments) is CRUD with a compliance checkbox
- A drag-and-drop or template-based email composer is a solved, well-documented UI pattern
- Sending itself is one API call per recipient through any transactional email provider
Why ConvertKit gets Borderline
- Subscriber lists with tags and a simple broadcast composer share Mailchimp's buildable core
- Landing pages for lead capture are standard static-page-plus-form work
- For a creator sending occasional newsletters with no automation, this is a real weekend build
Where the builds overlap
Both rebuilds are made of parts from the Vibe Codeability Database. The shared ones are work you'd do once either way — the split ones are what actually separates these two.
SHARED — 3 parts
| Landing page | 99 |
| CRUD database | 95 |
| Email notifications | 91 |
ONLY MAILCHIMP
Nothing — every part of this rebuild is also in ConvertKit.
ONLY CONVERTKIT
Nothing — every part of this rebuild is also in Mailchimp.
What you lose leaving Mailchimp
- Deliverability — staying out of spam folders — is an ongoing reputation game tied to sending domain and volume history, not something you can build once and forget
- Bounce and complaint handling, unsubscribe compliance (CAN-SPAM, GDPR) need to be genuinely correct, not just present
- Their analytics, A/B testing, and audience insights are a real second product on top of the sending pipeline
What you lose leaving ConvertKit
- Visual sequence/automation builders (branching email flows triggered by subscriber behavior) are a small workflow engine, the same challenge every email tool on this register faces once automation enters the picture
- Deliverability at scale is the same ongoing reputation problem as every sender on this list
- Their creator-focused features (paid newsletters, digital product sales) layer real payment and access-control work on top
Read the full verdicts
Questions
Is Mailchimp or ConvertKit easier to build yourself?
These land in the same place — both borderline. Both are a weekend of work. ConvertKit lists at $25/mo against $13/mo for Mailchimp, a difference of $144 a year.
Can I build Mailchimp?
Borderline. Composing a campaign and sending it to a list is one transactional-email API call per recipient. The part Mailchimp actually sells is what happens after send: staying off spam blocklists at scale, which is a reputation problem, not a coding problem.
Can I build ConvertKit?
Borderline. ConvertKit's core is the same buildable email-and-list pattern as Mailchimp, just positioned for creators instead of businesses. The visual automation builder (if a subscriber does X, wait, then do Y) is the part that takes real work to match.
What do Mailchimp and ConvertKit have in common technically?
Both rebuilds need landing page, crud database, email notifications. That shared foundation is why they score similarly on the parts they overlap on — the difference comes from what each one adds on top.
Other comparisons
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