MailerLite is a cloud-based email marketing tool built for small businesses, creators, and online stores. It runs entirely in a web browser, so there is nothing to install, and it also offers mobile apps for iOS and Android for checking results and managing campaigns on the go.

The main things you can do with it:

Email campaigns — build emails with a drag-and-drop editor and ready-made templates, run A/B tests, and use RSS-to-email or send-time optimization.
Marketing automation — create visual workflows for welcome series, drip sequences, abandoned carts, and re-engagement messages.
Subscriber management — organize people with groups, tags, segments, and custom fields, and collect consent in a GDPR-friendly way.
Signup and landing pages — publish embedded forms, popups, and hosted landing pages without a separate tool.
E-commerce features — connect Shopify, WooCommerce, BigCommerce, or PrestaShop and add product blocks to emails.
Digital product sales — sell downloads and paid newsletter subscriptions directly.
Reporting — track opens, clicks, link performance, and list growth from a dashboard.

It is useful for anyone who wants one place to grow a contact list, send regular newsletters, and set up automated follow-ups without hiring a developer. A free plan covers small lists, and paid plans add unlimited emails, more advanced automation, and no MailerLite branding. A public REST API and webhooks let it connect with other tools, and the company is based in the EU, which matters to teams with data-protection requirements.