Email marketing tool with sign-up forms I can embed on any website

MailerLite is a good place to start: it offers email marketing plus embedded sign-up forms you can add to your website. (mailerlite.com)

Other solid options:

• Brevo — provides iframe or HTML embed codes, including a simpler HTML option. (help.brevo.com)
• Kit — lets you embed forms on a website or blog; it’s especially geared toward creators and newsletters. (kit.com)
• Mailchimp — offers embedded sign-up forms, though some website platforms may require code adjustments. (mailchimp.com)

If by “any website” you mean you can paste a code snippet into its HTML, Brevo or MailerLite are straightforward options. Check that your website builder allows custom HTML or embeds.

Here are the strongest options for forms you can drop onto any site. Pricing changes often, so confirm on each vendor's site before you commit.

• Brevo: Its free plan allows unlimited contacts, though sending is capped at 300 emails a day. Brevo offers a free plan where you can add as many contacts as you wish and send up to 300 emails/day. Paid plans are send-based, so it can work well for larger lists that send less often.
• Kit (formerly ConvertKit): It suits creators and newsletter writers. Its free tier is generous on list size, but automations require a paid plan. Costs rise quickly as your list grows, so it can be pricey for smaller lists.
• MailerLite: It's a good fit for beginners. It includes signup forms, popups, and landing pages, and one roundup notes that you can also grow your email list with signup forms, create dedicated landing pages. It also has a free tier.
• Mailchimp: It's the most familiar name and includes embedded forms and popups. However, its free plan has shrunk. Sources disagree on the exact limit, but one reports it at 250 subscribers, and another puts it at 500 contacts.
• Moosend: This is a budget-friendly alternative to Mailchimp. Its forms can be published by embedding them on your site, and you can customize them with JavaScript.
• Omnisend or Klaviyo (ecommerce only): If you run an online store, these add embeddable forms alongside ecommerce automation. Omnisend is generally cheaper than Klaviyo.

My suggestion: For most people starting out, Brevo or MailerLite gives you the most for free. Choose Kit if you're a creator who wants simple landing pages and digital product delivery. Check whether the embed code works on your specific website builder (WordPress, Wix, Squarespace, etc.) and test a form before you rely on it.

Most major email marketing platforms include built-in tools to create and embed sign-up forms on any website. These tools typically provide you with a simple HTML snippet (often called an "embed code") that you can copy and paste into your website's header, footer, sidebar, or directly into a page's content.

Here are some of the most popular and reliable options, categorized by their strengths:

Top Recommendations

• MailerLite (Best All-Rounder): Highly regarded for its ease of use and generous free plan. It offers intuitive drag-and-drop form builders, supports inline/embedded forms, and integrates seamlessly with WordPress via a plugin if you prefer not to use raw code.
• Mailchimp (Best for Beginners): One of the most widely used platforms. It provides straightforward tools for creating embedded, popup, and landing page forms. It is a great choice if you want a familiar interface and extensive third-party integration options.
• Brevo (formerly Sendinblue) (Best for Budget/Scaling): Excellent if you are budget-conscious. Its pricing is based on the number of emails sent rather than the number of contacts stored, making it very cost-effective as your list grows. It includes robust form-building capabilities.
• EmailOctopus (Best for Simplicity): If you want a no-clutter experience, this is a strong choice. It focuses on simplicity and provides effective, easy-to-use forms for collecting subscribers.
• Flodesk (Best for Design): If your brand’s visual identity is your top priority, Flodesk is "design-first". It offers beautiful, high-converting form templates (including popups and inline forms) that look professional right out of the box.

How the "Embed" Process Usually Works

Regardless of which platform you choose, the workflow is generally the same:

1. Create the Form: Inside your email marketing dashboard, you use their editor to design your form (choosing fields like Name and Email).
2. Generate Code: Once finished, the platform provides an "Embed Code" (usually a block of HTML or JavaScript).
3. Paste to Website: You paste this code into your website's HTML editor or a "Custom HTML" block in your website builder (like WordPress, Squarespace, or Wix).

Quick Comparison Table

A note on "double opt-in": Most of these tools allow you to enable "double opt-in" settings within the form, which sends a confirmation email to new subscribers. This is highly recommended to keep your email list healthy and prevent fake sign-ups.

MailerLite is a good place to start: it offers embeddable signup forms and a free plan for up to 250 subscribers, with 2,500 monthly emails. Its form limits vary by plan. ¹¹⁰

Other options:

• Brevo — Build a signup form and embed it on your site using an iframe or HTML code. ⁴⁵
• Mailchimp — Generate an HTML embed code for a customized form and add it to your website. ⁸¹²

If you tell me your website platform (such as WordPress, Squarespace, or Shopify) and whether you need a free plan, I can narrow it down.