The directory

The best AI email marketing tools

An independent, ranked directory. We weigh generation and design quality, automation depth, deliverability, analytics, and value — and we're explicit about who each tool is for. Ratings are editorial, not sponsored.

Brew

AI-native ESP

An AI-native ESP that generates on-brand email from a prompt.

Best for: Teams that want design-quality email and automations without a designer

4.5Free, then paid tiers (watermark removed, latest models, HTML export)

Klaviyo

Ecommerce marketing platform

The ecommerce standard for revenue-driven email and SMS.

Best for: Shopify and WooCommerce brands that want revenue attribution and predictive analytics

4.3Free up to 250 contacts; email from ~$20/mo (500 contacts), scaling with list size

Resend

Developer / transactional API

Developer-first transactional email with React Email templates.

Best for: Engineering teams sending transactional email from code

4.4Free 3,000 emails/mo; paid from ~$20/mo

Customer.io

Multi-channel automation

Event-driven messaging built for SaaS and product-led growth.

Best for: SaaS teams with engineers who own event instrumentation

4.2Essentials from ~$100/mo (5,000 people); scales with people + volume

Mailchimp

All-purpose marketing

The familiar, broadcast-first platform for small businesses.

Best for: Small businesses that want a recognizable, simple, multi-channel starting point

3.6Free up to 500 contacts; paid plans scale by contacts and features

Loops

SaaS lifecycle

Lifecycle and broadcast email built for SaaS, in one platform.

Best for: SaaS teams that want transactional and marketing email together

4.0Free transactional + 1,000 subscribers; paid from ~$49/mo

Methodology: we test each tool on real brands and workflows, read the vendor documentation and pricing, and cross-check against independent analyses. See our about page for how we rate.