Some tools in this article have affiliate relationships with OperDrive. This never influences what we write, what we recommend, or how tools are ranked. Our research determines that. Nothing else.
THE SHORT ANSWER
If you run an ecommerce store → Klaviyo
If you run a service business, SaaS, or B2B company → ActiveCampaign
If you send simple promotional emails without automation depth → Mailchimp
The three leaders are not competing for the same business. Each wins decisively for one type and loses for the others — so the only question that matters is which category is yours.
AT A GLANCE
| Mailchimp Essentials | ActiveCampaign Starter | Klaviyo Email | |
|---|---|---|---|
| Price (1,000 contacts) | $13/mo | $15/mo | $30/mo |
| Free tier | 500 contacts | No | 250 contacts |
| CRM | Basic | Built-in, advanced | Limited |
| Lead scoring | No | Yes | No |
| Revenue attribution | Limited | No | Yes (ecommerce) |
| Best for | Simple promo email | B2B, SaaS, services | Ecommerce |
| OperDrive deal | Standard | Standard | Standard |
Klaviyo — for ecommerce
If you run a store, Klaviyo wins. Its Shopify integration and per-campaign revenue attribution are unmatched — you see exactly which email made which sale. Klaviyo Email costs $30/month at 1,000 contacts, scaling to around $150/month at 10,000 — more than both alternatives. The premium is justified only for ecommerce, where revenue attribution makes the ROI clear. For a store doing $30,000/month, Klaviyo's abandoned cart recovery alone (5-15% = $1,500-$4,500/month) far exceeds its cost.
ActiveCampaign — for B2B and services
If you manage deals alongside email, ActiveCampaign is the answer. ActiveCampaign Starter costs $15/month at 1,000 contacts, scaling to around $99/month at 10,000. Its built-in CRM is the differentiator — for B2B businesses managing deals alongside email sequences, having CRM and automation in one platform eliminates a separate CRM tool. Lead scoring — scoring leads by email opens, link clicks, and website visits — is available from the Starter plan, making ActiveCampaign's automations meaningfully more powerful than Mailchimp's.
Mailchimp — for simple promotional email
If you send straightforward campaigns and want the easiest interface, Mailchimp is fine. Mailchimp Essentials costs $13/month at 1,000 contacts, scaling to around $87/month at 10,000. Its strengths are ease of use, brand recognition, and the largest template library; its weaknesses are automation depth (below ActiveCampaign) and ecommerce attribution (below Klaviyo).
When it actually pays off
| Monthly cost | What you get | |
|---|---|---|
| Mailchimp Standard | $100 | Standard automations |
| ActiveCampaign Starter | $99 | Advanced automation + built-in CRM + lead scoring |
| Klaviyo Email | $150 | Best ecommerce automation + attribution |
At 10,000 contacts, ActiveCampaign and Mailchimp cost nearly the same — but ActiveCampaign includes a CRM and lead scoring Mailchimp does not. For B2B, ActiveCampaign delivers far more value per dollar. Klaviyo costs 50% more than Mailchimp but generates more revenue for ecommerce through superior flows.
What nobody else mentions
ActiveCampaign's site tracking — triggering automations based on which pages a contact visits — is one of its most powerful, least-discussed features. A contact visiting your pricing page three times in a week can auto-trigger a personal follow-up. No other platform here does this at the Starter price.
Klaviyo's 2025 price increases (≈25%) drove many mid-size brands to Omnisend. If pricing keeps rising, re-evaluate annually.
Mailchimp's parent Intuit integrates it with QuickBooks — for businesses already in the Intuit ecosystem, purchase data can inform segmentation.
ActiveCampaign acquired Postmark (transactional email) in 2022 — for SaaS needing both marketing and transactional email, it now covers both below the cost of buying separately.
FAQ
Which email platform is best for ecommerce?
Klaviyo. Its Shopify integration, ecommerce-specific flows, and per-campaign revenue attribution are unmatched for online stores.
Is ActiveCampaign better than Mailchimp?
For B2B and service businesses, yes — its built-in CRM and lead scoring deliver more value at a similar price. For simple promotional email, Mailchimp is easier.
Why is Klaviyo more expensive?
Klaviyo prices for ecommerce value — its revenue attribution and flow performance generate measurable returns that justify the premium for stores, not for general email.
What is the cheapest email automation tool?
Mailchimp's free tier (500 contacts) and ActiveCampaign Starter ($15/month at 1,000 contacts) are the lowest entry points. ActiveCampaign offers more automation per dollar.
Email automation is your highest-ROI marketing channel.
If you want to know which email platform belongs in your specific business — that is what OperDrive does. Your Stack. Precisely.
What remains is not a suggestion.