The 80/20 of Email marketing
Platforms for building, sending, and analyzing email campaigns. Klaviyo owns e-commerce; Mailchimp dominates small business; both face pressure from all-in-one marketing suites.
Email marketing is a $1.5 billion-plus category anchored by two acquisitions: Intuit bought Mailchimp for $12 billion in 2021, and Klaviyo IPO’d at approximately $9 billion in 2023. The 80/20 verdict: use Klaviyo for any store with a Shopify or WooCommerce backend, and Mailchimp for non-e-commerce small businesses. The pricing difference is narrow; the capability difference for e-commerce is wide.
What is the email marketing category?
Email marketing platforms handle list management, campaign building, automated flows, and analytics for email as a customer acquisition and retention channel. The category includes broadcast newsletter tools, transactional email services, and behavioral automation platforms — the last category is where Klaviyo and Mailchimp most directly compete.
The critical split is between list-based email (Mailchimp’s model — send campaigns to segments of a list) and event-driven email (Klaviyo’s model — trigger flows based on real-time customer actions like purchases, cart abandonment, or product views). Event-driven email produces higher revenue attribution and is the reason Klaviyo commands a premium for e-commerce use cases.
How should you pick an email marketing platform?
The decision is almost always binary for small and mid-sized businesses: are you running an e-commerce store or not?
If yes — Klaviyo’s Shopify and WooCommerce integrations sync product catalog, purchase history, and cart events in real time. That data enables revenue-attributed segmentation that Mailchimp cannot replicate natively. If no — Mailchimp’s template library, audience management, and free tier provide more than enough capability for service businesses, nonprofits, and content publishers. See our evaluation methodology for the scoring criteria we apply to every tool in this category.
Our core picks for email marketing in 2026
Klaviyo is the default for e-commerce. It connects to Shopify in minutes, syncs every purchase and browse event, and ships pre-built flows for welcome series, abandoned cart, and post-purchase sequences. The free plan covers 250 profiles; the 10K profile plan runs $150 per month. Klaviyo went public in September 2023 at approximately $9 billion — the first e-commerce software company to IPO in that cycle.
Mailchimp is the default for non-e-commerce small businesses. Its campaign builder and template library are the most accessible in the category, and the free tier for up to 500 contacts and 1,000 monthly sends is generous for early-stage programs. Intuit’s $12 billion acquisition in 2021 brought Mailchimp deeper QuickBooks integration for financial services customers. The Essentials plan for 10K contacts runs $110 per month billed annually.
When should you pick a situational email marketing tool?
For high-volume transactional email (receipts, password resets, notifications), Postmark and SendGrid handle deliverability and API-driven sends better than marketing platforms. These are infrastructure tools, not campaign builders — most teams run both a marketing platform and a transactional email service.
For newsletter-first businesses, Beehiiv and Substack are built specifically for publishing, subscriber monetization, and referral growth. They outperform Mailchimp and Klaviyo on newsletter UX. For enterprises needing CRM integration and journey orchestration, Salesforce Marketing Cloud and HubSpot Email sit above the SMB tools in complexity and price.
What email marketing tools should you skip?
- Constant Contact — premium-priced without matching Klaviyo’s e-commerce depth or Mailchimp’s template quality
- Mailchimp for e-commerce — Mailchimp’s native Shopify integration is functionally behind Klaviyo; the data sync lags and attribution is weaker
- Free newsletter tools with no analytics — ownership of your list and open/click data is foundational; avoid platforms that don’t export subscriber data cleanly
- Marketing automation suites priced over $1K/month for under 20K subscribers — HubSpot and Marketo overhead is rarely justified at this list size
How much do email marketing tools cost?
| Tool | Free tier | 5K contacts | 10K contacts | 50K contacts |
|---|---|---|---|---|
| Klaviyo | Yes (250 profiles) | $45/month | $150/month | $700/month |
| Mailchimp | Yes (500 contacts) | $75/month | $110/month | $350/month |
| Brevo | Yes (300 emails/day) | $25/month | $45/month | $173/month |
| ActiveCampaign | No | $49/month | $99/month | $239/month |
Pricing as of mid-2025, billed annually. All platforms charge by active contacts or email volume — clean your list regularly to avoid paying for unengaged subscribers.
Frequently asked questions about email marketing
(See FAQ frontmatter above — rendered by the page template.)
Related categories: newsletters — for newsletter-first businesses where Beehiiv and Substack outperform general email marketing platforms, CRM — for contact management and sales workflows that feed into email marketing programs. See our evaluation methodology for how we rate every tool in this directory.
Core picks
Situational
Common questions
What are the best email marketing tools?
Our top picks are Klaviyo. See the full list below for our 80/20 verdict on each.
How do you pick the best email marketing tool?
We sort every tool into core (use unless you have a reason not to), situational (great for a specific use case), or skip. The choice usually comes down to your team size, collaboration model, and existing toolchain. See our methodology page for the full evaluation criteria.
Are there free email marketing tools?
Yes. Klaviyo, Mailchimp have a free tier or are open-source.