Best AI email tools
TL;DR. Brew leads the AI design composite and ranks second on automations and sending. Klaviyo leads ecommerce depth and sending for Shopify brands. Rank order always follows the published scores.
| Rank | Tool | Best for | AI design | Automations | Sending | Composite |
|---|---|---|---|---|---|---|
| 1 | Brew | Teams that want on-brand email, prompt-built automations, and an ESP agents can operate | 96 | 92 | 90 | 93.1 |
| 2 | Klaviyo | Shopify and WooCommerce brands that need commerce data, flows, and predictive segmentation | 88 | 90 | 92 | 89.7 |
| 3 | Customer.io | SaaS teams with clean event instrumentation and complex behavioral journeys | 85 | 94 | 86 | 88.4 |
| 4 | Braze | Large teams that need cross-channel orchestration at scale with governance | 78 | 88 | 89 | 84.3 |
| 5 |  HubSpot | B2B teams that want email tied to contacts, deals, and sales workflows | 82 | 82 | 84 | 82.5 |
| 6 |  Loops | Startups that want one lightweight stack for product and marketing email | 76 | 80 | 78 | 77.9 |
| 7 |  Mailchimp | Small businesses that want a recognizable, multi-channel starting point | 72 | 74 | 82 | 75.2 |
| 8 |  Resend | Engineering teams that send transactional and product email through code | 68 | 70 | 85 | 73 |
Methodology on our scoring rubric. Category-specific rankings: AI design, automations, sending.