Best Email Marketing Tools for Squarespace Users (2026)

Squarespace ships with a built-in email tool called Email Campaigns, and for a lot of site owners it quietly becomes the wrong default. It pulls your site’s fonts and colors automatically, so the first newsletter looks polished in minutes. Then the list grows, you want a real welcome sequence, you want to tag people by what they clicked, and you discover the automation is shallow and the per-send pricing climbs faster than a dedicated tool. The integration that felt convenient turns into a ceiling.

The good news is that connecting an outside email platform to Squarespace is straightforward. Squarespace form blocks and newsletter blocks can pass subscribers to most major tools through native connectors or Zapier, and checkout data from Squarespace Commerce can flow into ecommerce-focused platforms. The question is not whether you can switch — it is which tool fits the kind of site you run.

We compared five platforms that Squarespace users reach for most: MailerLite, Mailchimp, Kit, Klaviyo, and Omnisend. Each was judged on how cleanly it connects to Squarespace, automation depth, pricing at small list sizes, and whether it suits a content site or a store.

Quick Pick by Site Type

If you run a portfolio, blog, or service business and want clean design without much fuss, start with MailerLite. If you sell digital products or run a creator newsletter, Kit is built for you. If you run a Squarespace Commerce store doing real revenue, Klaviyo or Omnisend earn their higher price through product syncing and abandoned-cart recovery. Mailchimp is the familiar fallback, though it is rarely the cheapest or the deepest.

MailerLite: Best for Most Squarespace Sites

MailerLite is the tool I recommend to the majority of Squarespace users who are not running a store. The drag-and-drop editor produces clean, modern emails that match the understated Squarespace aesthetic, and the free plan is generous enough to run a real list before you pay anything.

You connect it to Squarespace by embedding a MailerLite signup form on your site or routing your Squarespace form submissions through Zapier. It is not a one-click native install, so expect a few minutes of setup. Once connected, you get a visual automation builder, landing pages, and signup forms that most competitors charge more for.

As of June 30, 2026, MailerLite’s free plan covers 250 subscribers and 2,500 emails per month with access to the automation builder, a website, and a landing page. The paid Comfort plan starts at $12/month and the Power plan at $25/month, both scaling with subscriber count. Registered nonprofits get 30% off paid plans.

Where MailerLite falls short: the free plan dropped from 1,000 to 500 subscribers in 2025, and again to 250 in the 2026 restructure, so it is less generous than it once was. Support on the free tier is limited to a 14-day window of live chat, then email only. And because it is not a native Squarespace integration, deep ecommerce syncing with Squarespace Commerce is not its strength. See our full MailerLite review for the detail.

Kit: Best for Creators and Digital Products

Kit, formerly ConvertKit, is purpose-built for people who publish: writers, course creators, coaches, and anyone selling digital products from a Squarespace site. Its tagging and sequence model fits the way creators actually work — subscribe someone from a lead magnet, tag them by interest, and drop them into an automated welcome series.

The Squarespace connection runs through a form embed or Zapier, and Kit’s commerce features let you sell digital products and paid newsletters directly, which pairs well if Squarespace is your front-end but you want email to handle monetization. The free Newsletter plan supports up to 10,000 subscribers with unlimited broadcasts, which is unusually high, though it includes only one basic automation.

Verified on the live pricing page on June 30, 2026: the paid Creator plan is $33/month for 1,000 subscribers (or $390 billed yearly), and it adds unlimited automations, sequences, and the Kit MCP for AI-driven workflows. Digital product sales carry a 3.5% + 30¢ transaction fee.

Where Kit falls short: the email designer is functional but plain — if you want richly designed, image-heavy campaigns, MailerLite and Mailchimp give you more visual control. The free plan’s single automation is a real constraint once you want more than one funnel. And at $33/month for 1,000 contacts, it is pricier than MailerLite at the same size.

Mailchimp: The Familiar Fallback

Mailchimp is the name most Squarespace users already know, and it connects through a native block, a form embed, or Zapier. The email editor is polished, the template library is large, and the brand is reassuring if you have used it before. For a small list sending occasional campaigns, it works.

The catch is value. Mailchimp’s free plan was cut in January 2026 to 250 contacts and 500 monthly sends, down from 500 contacts and 1,000 sends. The Essentials plan starts around $13/month for 500 contacts, but multi-step automations require the Standard plan, which starts around $20/month. Pricing climbs steeply with list size, and contacts you are not even emailing can still count toward your total.

Where Mailchimp falls short: you pay more for less automation than MailerLite offers at the same tier, the contact-counting policy inflates bills, and the platform is a generalist rather than a specialist for either creators or stores. Confirm the current numbers before signing up, since the tiers shifted twice in the last year.

Here is how MailerLite and Mailchimp stack up directly, since they are the two most common picks for non-commerce Squarespace sites:

Klaviyo: Best for Squarespace Commerce Stores

If you sell physical products through Squarespace Commerce, Klaviyo changes the math. It syncs your product catalog and customer behavior, then triggers automations off real events — someone abandons a cart, browses without buying, or places a second order. That behavioral targeting is what separates store-grade email from a basic newsletter tool.

Klaviyo’s free plan covers 250 contacts and 500 email sends per month, and the paid Email plan starts at $20/month for the 251–500 profile tier. Be aware that since February 2025 Klaviyo bills on total active profiles — every subscribed contact, not just the ones you email in a given month — so the bill scales with your whole list.

Where Klaviyo falls short: price at scale. Past a few thousand contacts it becomes one of the more expensive options, and the Squarespace Commerce integration is not as deep or as plug-and-play as Klaviyo’s Shopify connection. For a small store still finding its footing, that cost is hard to justify. Our Klaviyo pricing breakdown shows where the curve bends.

Omnisend: The Multi-Channel Store Alternative

Omnisend is the ecommerce alternative to Klaviyo, with email, SMS, and web push built into the same automation workflows rather than sold as separate add-ons. For a Squarespace store owner who wants cart-recovery and order-confirmation flows without managing three tools, it is a tidy package.

The free plan includes 250 contacts and 500 emails per month, and the Standard plan starts around $16/month for 500 contacts. Pre-built automations for cart recovery and welcome series can be switched on in minutes.

Where Omnisend falls short: it is built for ecommerce, so if your Squarespace site is content-first rather than a store, you will not use most of what you pay for. Billing also counts non-subscribers like abandoned-cart visitors toward your contact total. Confirm current tiers on the Omnisend pricing page.

How to Choose for Your Squarespace Site

Match the tool to what your site does, not to brand recognition.

A portfolio, blog, or service business sending newsletters and the occasional promotion is best served by MailerLite. You get a real automation builder and clean design for free or close to it.

A creator selling courses, ebooks, or a paid newsletter should use Kit. Its tagging, sequences, and built-in commerce are designed for exactly that workflow, and the free plan scales further than any competitor here.

A Squarespace Commerce store doing meaningful revenue needs Klaviyo or Omnisend. Choose Klaviyo for the deepest behavioral segmentation, Omnisend if you want SMS and push in the same flows without extra bills. For the wider field, see our best email marketing for ecommerce guide.

A site owner already comfortable in Mailchimp with a small list can stay put, but should know that MailerLite usually delivers more automation for less money.

The Bottom Line

Squarespace Email Campaigns is fine for a first newsletter and a poor long-term home for a growing list. For most Squarespace sites that are not stores, MailerLite gives you the best combination of design, automation, and price. Creators should reach for Kit, and Squarespace Commerce stores should pay up for Klaviyo or Omnisend once the revenue justifies it.

For deeper comparisons, read our MailerLite vs Mailchimp breakdown, browse the MailerLite pricing page directly, or compare Kit’s tiers on the Kit pricing page.

Sources

1. Squarespace — Email Campaigns — accessed 2026-07-23
2. MailerLite — Pricing — accessed 2026-07-23
3. Mailchimp — Pricing — accessed 2026-07-23
4. Klaviyo — Pricing — accessed 2026-07-23
5. Omnisend — Pricing — accessed 2026-07-23