10 Best Email Marketing Tools in 2026

The best email marketing tools in 2026 are Mailchimp, Brevo, Klaviyo, HubSpot Marketing Hub, ActiveCampaign, Kit, MailerLite, Constant Contact, Omnisend and Zoho Campaigns. Eight of the ten still offer a free plan, and paid plans start at roughly US$9–20 a month for small lists. The bigger change since 2024 is AI: most vendors now bundle writing assistants, and several have added agents that build campaigns for you.

Prices below were checked on each vendor’s own pricing or help pages as of October 2026. They are in US dollars, usually rise with list size, and often differ for annual billing. Where a vendor’s page did not show a figure we could confirm, we say so.

Quick comparison

The 10 best email marketing tools in 2026

1. Mailchimp

Owned by Intuit, Mailchimp remains the default pick for small businesses that want email, landing pages and basic automation in one place. In May 2026 it launched Analytics AI, a chat-style assistant on paid plans that reads campaign and connected store data (Shopify, WooCommerce, Wix) and suggests next steps. Generative AI tools sit in the Standard and Premium tiers.

Free plan: yes, up to 250 contacts and 500 sends a month (250 a day). Paid: Essentials is shown at US$13/month and Standard at US$20/month on Mailchimp’s pricing page, framed as rates for the first 12 months; the standard rate afterwards and higher contact tiers cost more, so check the page for your list size.

2. Brevo

Brevo (formerly Sendinblue) charges mainly by email volume rather than contacts, which suits firms with big but rarely mailed lists. The Starter plan includes an AI content generator for subject lines and copy, Standard adds AI send-time optimisation, and Professional brings Aura AI segmentation and a natural-language data analyst.

Free plan: yes, up to 300 emails a day. Paid: Starter from US$9/month, Standard from US$18/month, according to Brevo’s help centre.

3. Klaviyo

Klaviyo is built around e-commerce data: purchase history, browsing and predicted spend feed directly into segments and flows. In June 2026 it put Composer, an AI marketing agent that drafts cross-channel campaigns and waits for approval before sending, into public beta, alongside a Customer Agent for service conversations.

Free plan: yes, up to 250 active profiles and 500 email sends a month. Paid: see the Klaviyo pricing page; the calculator did not display a starting figure we could confirm.

4. HubSpot Marketing Hub

HubSpot makes most sense when email is part of a wider CRM setup. Its Breeze Assistant and a set of agents (content, campaign and nurture) now handle drafting and personalisation inside Marketing Studio. If you are weighing CRMs too, see our list of the 10 best sales CRM software for 2026.

Free plan: yes, 2,000 sends a month with HubSpot branding. Paid: Starter carries a regular price of US$20 per seat per month; in October 2026 HubSpot was advertising discounted introductory Starter pricing.

5. ActiveCampaign

ActiveCampaign is known for its visual automation builder. Every plan now includes its Active Intelligence features, such as an AI automation builder, AI campaign builder and suggested segments, with 500 AI credits a month. Predictive sending is limited to Pro and Enterprise.

Free plan: no; there is a 14-day trial. Paid: Starter is US$15/month for 1,000 contacts, billed annually, per ActiveCampaign’s own comparison pages.

6. Kit (formerly ConvertKit)

Kit serves bloggers, coaches and creators who sell digital products and paid newsletters. Its paid plans include the Kit MCP connector, which lets assistants such as Claude, ChatGPT and Gemini work directly with your account.

Free plan: yes, up to 10,000 subscribers, but without visual automations or email sequences. Paid: Creator is US$33/month, or US$390 billed yearly.

7. MailerLite

MailerLite renamed its paid tiers in mid-2026: Growing Business became Comfort and Advanced became Power. Comfort now includes the AI writing assistant and smart sending, and paid plans get full MCP and API access.

Free plan: yes, 250 subscribers and 2,500 emails a month, with MailerLite branding. Paid: Comfort from US$12/month, Power from US$25/month.

8. Constant Contact

Constant Contact focuses on local businesses, events and non-profits, with phone support and an AI content generator that writes copy from a few keywords. It bought the European platform Moosend from Sitecore in June 2025.

Free plan: no permanent plan on the main pricing page; a free trial is offered. Paid: Lite starts at US$12/month on Constant Contact’s Lite page. The main pricing page has been regrouped into toolkit bundles, so check there for current tiers.

9. Omnisend

Omnisend targets small online shops with email and SMS in one workflow. Its Pro plan adds personalised product recommendations, dynamic content and AI send-time personalisation; Standard users can buy these as add-ons.

Free plan: yes, 250 contacts and 500 emails a month. Paid: Standard from US$16/month, Pro from US$59/month, excluding VAT.

10. Zoho Campaigns

Zoho Campaigns is a natural fit for companies on Zoho CRM or Zoho One, a common setup among Indian SMEs. All plans include generative AI, AI subject-line suggestions and send-time optimisation, plus SPF/DKIM authentication tools.

Free plan: yes, up to 2,000 contacts, 6,000 emails a month and five users. Paid: Standard and Professional are priced by contact tier; see the Zoho Campaigns pricing page.

How to choose: a guide for business owners

Start with what you sell. Online stores get the most from Klaviyo or Omnisend, which read order data. Service firms and B2B companies are usually better off with HubSpot or ActiveCampaign, where email ties into a sales pipeline. Creators should look hard at Kit’s free tier.

Next, price at your size a year from now. Most tools bill by contacts, so a list that doubles can double your bill. Brevo’s volume-based model is the main exception.

Then check who will use it. A founder sending one newsletter a month does not need agents or predictive scoring. A three-person marketing team probably does. For the wider context, our digital marketing trends for 2026 piece covers where AI is changing campaign work. If you need multi-step journeys across email, SMS and ads, compare our guide to marketing automation tools and software in 2026.

Deliverability: the Gmail and Yahoo rules

Whichever platform you pick, inbox placement now depends on following mailbox providers’ rules. Since February 2024, Google’s sender guidelines require anyone sending more than 5,000 messages a day to Gmail addresses to authenticate with SPF, DKIM and DMARC, offer one-click unsubscribe and keep spam complaints below 0.3%. Google said it would step up enforcement from November 2025, including temporary and permanent rejections of non-compliant mail.

Yahoo’s bulk-sender requirements are similar and add that unsubscribe requests must be honoured within two days. All ten tools above support these settings, but you still need to add the DNS records for your own domain.

Frequently Asked Questions

Which email marketing tool has the best free plan in 2026?

By list size, Kit’s free plan (up to 10,000 subscribers) is the most generous, though it lacks automations. Zoho Campaigns (2,000 contacts) and Brevo (300 emails a day) are strong for small businesses.

What is the cheapest paid email marketing tool?

Among the ten, Brevo’s Starter plan, from US$9 a month as of October 2026, has the lowest listed entry price. MailerLite and Constant Contact start at US$12.

Do I need DMARC to send marketing emails?

If you send more than 5,000 messages a day to Gmail or Yahoo users, yes. A DMARC policy of at least “p=none” is required, along with SPF and DKIM.

Is Mailchimp still free?

Yes. Mailchimp’s free plan covers up to 250 contacts and 500 sends a month, but it excludes the generative AI features found on Standard and Premium.