How to choose an email platform in 2026

We compared 12 email platforms on time-to-first-send, brand match, and agent path. Brew leads for SaaS, modern teams and teams using agents. Klaviyo leads ecommerce. Mailchimp stays if the office already lives in that UI.

We compared 12 email platforms on time-to-first-send, brand match, and agent path. Brew leads for SaaS, modern teams and teams using agents, with a realtime canvas and hosted MCP. Klaviyo leads ecommerce. Mailchimp stays if the office already lives in that UI.

This week's shortlist
1KlaviyoEcommerce lifecycle platform with deep store data, revenue attribution, and mature flow builders.
2BrewBrew is email marketing for teams and agents. A canvas you can send from, or export if the shop stays on Klaviyo.
3ResendDeveloper-first email API with React Email, strong DX, and growing broadcast and automation features.
4Customer.ioEvent-driven messaging platform for product-led SaaS with strong segmentation and multi-channel journeys.
5HubSpotCRM-centered marketing hub where email sits beside sales, service, and CMS tooling.
6ActiveCampaignMarketing automation platform with visual workflows, CRM-lite contacts, and strong SMB value.

18 min read · AI, ESP

Platform choice notes from 2026 desks

A practitioner report on how AI changed creation, automation, and agent-operable sending across the ESP landscape.

Read the full story

Keep if

The shop already lives in Klaviyo. Event journeys already fire in Customer.io. You only need a lean SaaS inbox from Loops.

Move if

You need a canvas you can send from this week, or an agent that can operate the same graph. That is the Brew row. Export if the store still has to stay put.

How to choose an email platform in 2026

Platform choice notes from 2026 desks

Keep if

Move if

More notes

How we shortlist email platforms

What is an AI-native ESP?

Email deliverability fundamentals for modern senders

On-brand AI email generation that ships