Quick Answer: The best email marketing software overall for most small businesses in 2026 is Mailchimp, thanks to broad name recognition, deep integrations, and plans starting at $13/month for 500 contacts, though its free tier has shrunk sharply in recent years. Constant Contact is the best choice for beginners who want simple, guided campaign building, starting at $12/month with no free plan. ActiveCampaign is the strongest pick for automation depth and built-in CRM features, starting at $15/month (annual billing) for 1,000 contacts. Klaviyo is the best option specifically for ecommerce stores on Shopify, with a free tier for up to 250 profiles and paid plans that scale with predictive analytics built in.
Key Takeaways
- Mailchimp’s free plan was cut to just 250 contacts and 500 monthly sends as of February 17, 2026, down from 500 contacts a year earlier — a steep reduction from the 2,000-contact free tier it offered before Intuit’s 2021 acquisition.
- Constant Contact has no permanent free plan at all, only a free trial, but its Lite, Standard, and Premium tiers ($12/$35/$80 at 500 contacts) include discounted annual pricing.
- ActiveCampaign changed its unsubscribed-contact billing policy for accounts created on or after November 3, 2025 — new accounts now pay for unsubscribed, unconfirmed, and bounced contacts, not just active ones.
- Klaviyo shifted its pricing model to bill by “active profiles” rather than raw contact count in 2025, and caps any single price jump at 25% even when you cross into a new tier.
- Budget alternatives like Brevo, MailerLite, and Omnisend undercut all four platforms above on price and are worth a look for tighter budgets.
- Every platform’s advertised “starting at” price reflects a small list size (250-1,000 contacts); real-world costs for a typical business list run 3-10x higher.
Best Email Marketing Software 2026: Quick Comparison
| Platform | Best For | Starting Price (500-1K contacts) | Free Plan |
|---|---|---|---|
| Mailchimp | Overall / broad integrations | $13/mo (Essentials) | 250 contacts, 500 sends/mo |
| Constant Contact | Beginners, guided setup | $12/mo (Lite) | None (trial only) |
| ActiveCampaign | Automation + built-in CRM | $15/mo (Starter, annual) | None (14-day trial) |
| Klaviyo | Ecommerce / Shopify | $20/mo (Email, 500 contacts) | 250 profiles, 500 sends/mo |
All four platforms price primarily by contact (or “profile”) count, which means the number you see advertised only tells part of the story — your actual bill depends heavily on how large your list is and how it grows. Here’s how each one actually works.
Mailchimp: Best Overall
Mailchimp remains the most recognized name in email marketing, and its broad integration ecosystem (Shopify, WordPress, Canva, Zapier, and hundreds more) is a big part of why it’s still the default choice for many small businesses in 2026.
Mailchimp’s four tiers
Mailchimp sells four plans: Free, Essentials, Standard, and Premium. Paid tiers run from $13/month for up to 500 contacts on Essentials up to roughly $1,600/month for 200,000 contacts on Premium, with custom pricing above that. At 2,500 contacts, expect to pay around $45/month on Essentials or $60/month on Standard; at 5,000 contacts, that climbs to roughly $75/month on Essentials and $100/month on Standard. Essentials caps you at three audiences (lists) and no multi-step automation. Standard adds multi-step automations, send-time optimization, and dynamic content. Premium adds advanced segmentation and phone support.
Mailchimp’s shrinking free plan
Mailchimp’s free tier has been cut nearly every year since Intuit’s 2021 acquisition: from 2,000 contacts in 2022, down to 500 in 2023, and down again to just 250 contacts and 500 monthly sends as of February 17, 2026, with a daily sending cap of 250 emails. Automation was fully removed from the free tier by mid-2025. If you’re evaluating Mailchimp specifically because of its free plan, budget for outgrowing it quickly.
Mailchimp pros and cons
- Pros: Widest third-party integration library of the four platforms, strong brand recognition and documentation, separate SMS, website, and transactional email products available.
- Cons: Free plan has shrunk dramatically and repeatedly since 2021, pricing rises steeply once your list crosses a few thousand contacts, and legacy pre-2019 accounts saw an 11-13% price increase in April 2026.
Constant Contact: Best for Beginners
Constant Contact has been a recognizable name in email marketing for over two decades, and its guided campaign-building experience remains one of the simplest starting points for someone with no marketing background.
Constant Contact’s three tiers
Lite, at $12/month for 500 contacts, covers basic broadcast emails. Standard, at $35/month, adds segmentation, marketing automation, and A/B testing. Premium, at $80/month, adds advanced automation, custom reporting, and built-in SEO tools. Every tier’s monthly email send limit scales with your contact count: 10x on Lite, 12x on Standard, and 24x on Premium. Sends beyond that allowance cost $0.002 per email. Paying for 12 months upfront saves up to 15%, and nonprofits can save up to 30% with prepayment.
Constant Contact’s steep scaling
Like Mailchimp, Constant Contact’s price climbs quickly with list size — a 25,000-contact list can push the Premium tier as high as $425/month. There’s no permanent free plan at any tier, only a free trial that has been shortened in 2026 for many new signups, down from a previous 60-day window to 14-30 days with a limited send cap during the trial.
Constant Contact pros and cons
- Pros: Simplest guided setup of the four platforms for marketing beginners, 300+ integrations including Shopify and Canva, strong reported ROI (Constant Contact cites $79 earned per $1 spent).
- Cons: No permanent free plan, pricing scales steeply and automatically as your list crosses thresholds, and the free trial window has been shortened in 2026.
ActiveCampaign: Best for Automation and Built-In CRM
ActiveCampaign draws a different type of buyer than Mailchimp or Constant Contact: teams that need deep, branching automation logic and a CRM baked into the same platform rather than bolted on separately.
ActiveCampaign’s four tiers
Starter, at $15/month (billed annually) for 1,000 contacts, includes email and basic marketing automation, a drag-and-drop editor, and a marketing CRM. Plus, at $49/month, adds a landing page builder, generative AI tools, retargeting ads, and revenue reporting. Professional, at $79/month, adds conditional content, conversion attribution, and priority support, with the send limit rising to 12x your contact count. Enterprise, at $145/month, adds SSO, custom objects, and a dedicated account team. Annual billing saves roughly 20% versus paying monthly across every tier.
ActiveCampaign’s 2025 billing policy change
ActiveCampaign quietly changed how it counts contacts for billing purposes on November 3, 2025. Accounts created before that date are grandfathered onto the old policy and only pay for active contacts. Accounts created on or after that date are now billed for all contacts, including unsubscribed, unconfirmed, and bounced ones — a change that can meaningfully inflate your bill if you don’t regularly clean your list.
ActiveCampaign pros and cons
- Pros: Deepest automation and branching logic of the four platforms, marketing CRM included on every tier, enhanced CRM add-ons available for B2B and B2C sales workflows.
- Cons: No free plan at all, Starter and Plus tiers are limited to a single user seat, and the November 2025 billing change can raise costs for newer accounts with list hygiene issues.
Klaviyo: Best for Ecommerce
Klaviyo built its reputation specifically around ecommerce, with the deepest native Shopify integration and predictive analytics of any platform in this comparison, which is why it’s the default recommendation for online stores rather than general small businesses.
Klaviyo’s pricing structure
Klaviyo offers a free plan for up to 250 profiles and 500 monthly sends, though it carries Klaviyo branding and limits support to your first 60 days. Paid Email plans start at $20/month for 500 contacts and scale from there: roughly $175/month at 5,000 contacts and $350/month at 10,000 contacts, climbing to about $720/month at 50,000 and $2,300/month at 250,000. An Email + SMS plan bundles text-message credits at the same tier price. Unlike ActiveCampaign, Klaviyo offers no annual billing discount — pricing is entirely month-to-month based on your current active-profile count.
Klaviyo’s active-profile billing model
Klaviyo shifted from billing by total contacts to billing by “active profiles” (anyone you can still email) starting in 2025. If someone unsubscribes or you manually suppress them, they stop counting toward your bill. Klaviyo caps any single price increase at 25% when you cross into a new tier, though that discount shrinks each time you downgrade and disappears entirely once it hits zero.
Klaviyo pros and cons
- Pros: Deepest Shopify and ecommerce integration of the four platforms, SMS included in the same plan rather than a separate product, predictive analytics (RFM, product, funnel, and cohort analysis) built in.
- Cons: No annual billing discount, gets significantly more expensive than the other three platforms once you cross 25,000-50,000 profiles, and Klaviyo Reviews (product review collection) is a separate $25/month add-on.
Cheaper Alternatives Worth Knowing About
If Mailchimp, Constant Contact, ActiveCampaign, and Klaviyo all feel like more than your budget needs, several lower-cost platforms are genuinely competitive for smaller lists. Brevo (formerly Sendinblue) prices by send volume rather than contact count, with a free tier covering up to 100,000 contacts and 300 emails per day, and a Starter plan at $9/month for 5,000 sends with no daily cap — a structure that favors businesses with large lists who email infrequently. MailerLite, after a mid-2026 plan restructure, offers a free tier for 250 subscribers and 2,500 monthly emails, with paid Comfort and Power plans starting at $12 and $25/month respectively. Omnisend, built specifically for ecommerce like Klaviyo but priced lower, starts around $16/month for 500 contacts, though a May 2026 change removed SMS credit purchases from its Standard plan, pushing multi-channel users toward the pricier $59/month Pro tier. None of these three match Klaviyo’s ecommerce depth or ActiveCampaign’s automation complexity, but for a straightforward newsletter or a smaller store, they can cut your monthly bill significantly.
How to Choose the Right Email Platform
Start by being honest about your list size trajectory, not just where you are today. Every platform in this comparison prices attractively at 500-1,000 contacts and gets progressively more expensive as your list grows — the platform that looks cheapest today may not be cheapest once you hit 5,000 or 10,000 contacts, so model your expected cost at 3x and 10x your current list size before committing.
Next, match the platform to your actual business type. If you run an ecommerce store, especially on Shopify, Klaviyo’s native integrations and predictive analytics generally justify its premium over Mailchimp or Constant Contact for stores doing meaningful revenue. If you need complex, multi-branch automation and a built-in CRM, ActiveCampaign is built specifically for that use case. If you’re a marketing beginner who wants the simplest guided setup, Constant Contact’s onboarding is the gentlest of the four. If you want the broadest general-purpose tool with the most integrations, Mailchimp remains the safest default.
Finally, factor in list hygiene requirements. If your list accumulates unsubscribes, bounces, and unconfirmed contacts regularly, ActiveCampaign’s new billing policy (for accounts created after November 2025) and Mailchimp’s practice of counting unsubscribed contacts toward your tier mean you’ll need to actively clean your list to avoid overpaying. Klaviyo’s active-profile model is the most forgiving here, since unsubscribed contacts stop counting immediately.
Compliance: CAN-SPAM and List Consent
Every platform in this comparison enforces the same baseline US legal requirements, since email marketing in the United States is governed by the CAN-SPAM Act regardless of which tool you use. That means every commercial email must include a working unsubscribe link, an accurate “From” name and subject line, your business’s physical mailing address, and honor opt-out requests within 10 business days. All four platforms automatically append an unsubscribe link and require a verified sender address, but the platforms themselves don’t verify that your contacts actually opted in — that responsibility sits with you. Building your list through single or double opt-in forms rather than purchasing or scraping contact lists is not just better practice, it also directly affects your deliverability and sender reputation on every platform listed here, since spam complaints on purchased lists can get your sending domain flagged industry-wide.
Hidden Costs to Watch For
Every platform in this comparison has at least one cost that doesn’t show up in the headline “starting at” price. Mailchimp’s pricing is based on total contact count, including unsubscribed contacts still sitting in your account, unless you actively delete them. Constant Contact charges $0.002 per email once you exceed your plan’s monthly send allowance, which is easy to hit unexpectedly if a campaign goes out to your full list more than once in a billing cycle. ActiveCampaign’s CRM, SMS, WhatsApp, AI activities, and custom reporting all sit outside the base email plan as separate add-ons that can substantially increase your real monthly cost — CRM pipelines alone can add roughly $68/month. Klaviyo’s product review collection tool, Klaviyo Reviews, costs an additional $25/month rather than being bundled into any tier.
Related Software Comparisons
Email marketing is usually just one piece of a small business’s software stack. If you’re also evaluating where your contacts and deals live day to day, see our comparison of the best CRM software for small business. If you’re building out the website your email campaigns point traffic to, our best website builder comparison covers Wix, Squarespace, and Shopify. And if you’re running paid social alongside email, our breakdown of video conferencing software covers the tools most small teams use to plan campaigns together.
Frequently Asked Questions
What is the best email marketing software overall in 2026?
Mailchimp remains the best overall choice for most small businesses thanks to its broad integration ecosystem and brand recognition, though its free plan has shrunk significantly. ActiveCampaign is the better choice if automation depth and a built-in CRM matter more than simplicity.
Is Mailchimp still free in 2026?
Mailchimp still offers a free plan, but it was cut to just 250 contacts and 500 monthly sends as of February 17, 2026, down from 500 contacts and 1,000 sends previously. Automation features were fully removed from the free tier by mid-2025.
Which email marketing platform is best for ecommerce?
Klaviyo is generally considered the best choice for ecommerce, particularly Shopify stores, thanks to its native integration depth and predictive analytics like RFM and cohort analysis. Omnisend is a commonly cited lower-cost alternative for stores under roughly 25,000 contacts.
Does Constant Contact have a free plan?
No. Constant Contact does not offer a permanent free plan, only a free trial. The trial length has been shortened in 2026 for many new signups, from a previous 60-day window down to 14-30 days with a limited send cap during the trial.
How does ActiveCampaign’s pricing scale with contacts?
ActiveCampaign’s four tiers (Starter, Plus, Professional, Enterprise) are all priced initially at 1,000 contacts and scale upward from there — at 10,000 contacts, the same four tiers run roughly $149, $189, $375, and $589/month respectively when billed annually.
What changed with Klaviyo’s pricing in 2025 and 2026?
Klaviyo shifted from billing by total contact count to billing by “active profiles” — people who can actually receive your emails — starting in 2025. This generally benefits businesses with a lot of unsubscribed or suppressed contacts, since those no longer count toward your paid tier.
Are there cheaper alternatives to these four platforms?
Yes. Brevo prices by send volume with a free plan covering up to 100,000 contacts, MailerLite offers a free plan for up to 250 subscribers with paid tiers from $12/month, and Omnisend is frequently cited as the closest lower-cost match to Klaviyo specifically for ecommerce use cases.
Do these platforms charge for unsubscribed contacts?
It varies. Mailchimp counts unsubscribed contacts still in your account toward your tier unless you delete them. ActiveCampaign now charges for unsubscribed, unconfirmed, and bounced contacts on accounts created after November 3, 2025. Klaviyo’s active-profile model is the most forgiving, since unsubscribed profiles generally stop counting toward your bill immediately.
Do I need consent to email someone under US law?
The CAN-SPAM Act doesn’t require opt-in consent before the first commercial email, unlike GDPR in the EU, but it does require every email to include a working unsubscribe mechanism, an accurate sender identity, and your business’s physical address, and you must honor opt-out requests within 10 business days regardless of how the contact was acquired.