HubSpot, Mailchimp, Klaviyo: stop comparing. They're not the same product.

If you've Googled "HubSpot vs Mailchimp" or "Klaviyo vs Mailchimp" recently, you've seen the same article 30 times.

It compares price tiers, lists features in green checkmarks, and ends with a recommendation that's basically "depends on what you need." The articles aren't wrong. They're just unhelpful.

Here's the thing nobody puts in the headline: these are not the same product. The "comparison" is meaningless until you've answered a different question first.

What each one actually is

HubSpot is a CRM with marketing tools attached. The core unit is a contact record with deal stages, email history, lead score, and pipeline stage. The marketing tools (email, forms, automation, content) are designed to feed and segment that CRM. If you don't care about pipeline tracking, sales handoff, or lead scoring, you're using maybe 30% of HubSpot.

Klaviyo is an e-commerce-first messaging platform. The core unit is a customer with a purchase history, cart events, browsed products, and predictive lifetime value. Email and SMS automations are built around triggers like abandoned cart, post-purchase, and win-back flows. If you don't have a Shopify-style transactional product, you're using maybe 40% of Klaviyo.

Mailchimp is a generalist email tool. The core unit is a subscriber on a list. It does the basics across most use cases (newsletters, simple automations, landing pages) without specializing in any. It's the no-strong-opinion option.

These three tools serve fundamentally different operating models. Comparing them feature-to-feature is like comparing a Honda Civic, a Ford F-150, and a Tesla Model 3 by the number of cup holders.

The actual question

"Which of these should I pick" decomposes into three sub-questions:

1. What kind of business are you running? Subscription B2B SaaS, e-commerce DTC, services, content/media. They have different customer-data shapes and different lifecycle moments.
2. What does your sales motion look like? Self-serve, sales-assisted, or transactional. This decides whether you need pipeline tracking (HubSpot territory), behavioral triggers (Klaviyo territory), or just basic broadcast (Mailchimp territory).
3. Where will your data live? Whichever tool owns your contact data is hard to migrate later. Pick the one that matches your business, not the one with the prettiest dashboard.

If you're a SaaS company with a 30-day sales cycle and SDRs handing demos to AEs, you need HubSpot. Klaviyo would be miserable for that motion. If you're an e-commerce brand with abandoned-cart and post-purchase flows, you need Klaviyo. HubSpot's e-commerce features have always been an afterthought. If you're a creator, a small services business, or a media brand sending newsletters, Mailchimp is genuinely fine. You don't need the complexity of the other two.

The pricing trap

The other thing the comparison posts get wrong: they list starter prices.

The starter prices aren't where the comparison breaks. They break at the "I have 10,000 contacts and real automation needs" mark.

• HubSpot Marketing Hub Pro is around $890 a month. That's where the actually useful automation, A/B testing, and reporting live.
• Klaviyo at 10,000 contacts is roughly $150 a month for email alone, more for SMS. The lifecycle automations are bundled.
• Mailchimp at 10,000 contacts is around $135 a month for the Standard tier with similar feature coverage to mid-tier Klaviyo.

Klaviyo wins on price-per-feature for e-commerce specifically. HubSpot wins on price when you need actual sales-marketing alignment. Mailchimp wins on price when you genuinely don't need either of those things.

If you're picking based on starter pricing, you're optimizing for a stage you'll outgrow in six months.

How to actually pick

Two questions, in order:

1. Does your business have a CRM-shaped problem (deals, pipeline, sales-marketing handoff)? → HubSpot.
2. Does your business have a customer-lifecycle-shaped problem (cart, purchase, repeat, churn)? → Klaviyo.

If the answer to both is no, Mailchimp. If the answer to both is yes, you need both, in different roles, and you should plan for that from day one rather than discovering it in year two.

The one thing all three comparisons get wrong by treating these as alternatives: most growing teams end up running two of them in tandem. HubSpot for the sales-pipeline contacts and Klaviyo for the transactional ones. The "vs" framing implied by every comparison article is mostly fiction.