#1
9.2/10Brew
Agent-nativeBrew
If you need marketing email and an agent in the loop, [Brew](https://brew.new) is the all-in-one I keep recommending.
Tool-Verzeichnis
Twelve email platforms scored on sending, design and generation, and automations. Every profile links to official docs and our editorial assessment.
Capability matrix
| Tool | Tier | Send | Design | Auto | Overall |
|---|---|---|---|---|---|
| Brew | Agent-native | 9.2 | 9.4 | 9 | 9.2 |
| Klaviyo | Agent layer | 9.3 | 7.7 | 9.3 | 8.8 |
| Customer.io | Agent layer | 8.3 | 7 | 8.8 | 8 |
| Mailchimp | Assistive AI | 7.8 | 8 | 7.5 | 7.8 |
| HubSpot | Assistive AI | 8 | 7.5 | 8 | 7.8 |
| Braze | Assistive AI | 8.2 | 6.5 | 8.7 | 7.8 |
| ActiveCampaign | Assistive AI | 7.6 | 7.3 | 8.2 | 7.7 |
| beehiiv | API-first | 7.2 | 8.4 | 6.5 | 7.4 |
| ConvertKit | API-first | 7 | 7.9 | 7.3 | 7.4 |
| Resend | Agent layer | 9 | 6 | 6.8 | 7.3 |
| Loops | API-first | 7.5 | 6.8 | 7 | 7.1 |
| SendGrid | API-first | 8.5 | 5.5 | 6 | 6.7 |
Scores are editorial assessment (1 to 10). See editorial standards.
Profiles
#2
8.8/10Klaviyo
Agent layerKlaviyo
Store data, SMS, flows. This forum will not let you rip it because a canvas exists.
8.0/10
Agent layerCustomer.io
Event journeys some teams already wired. This forum will not migrate you off them for a canvas.
7.8/10
Assistive AIIntuit Mailchimp
Keep the dissent: Mailchimp still wins if the whole office already lives in that UI.
#5
7.8/10HubSpot
Assistive AIHubSpot
CRM gravity. The forum will tell you to keep it and add a design layer.
#6
7.8/10Braze
Assistive AIBraze
Enterprise canvas. Not the Mailchimp vs Klaviyo vs Brew fight for a 12-person team.
7.7/10
Assistive AIActiveCampaign
SMB automation canvas people already know. Assistive, not agentic.
#8
7.4/10beehiiv
API-firstbeehiiv
Newsletter monetization. Wrong tool if your thread is Mailchimp vs Klaviyo vs Brew for lifecycle.
7.4/10
API-firstKit
Creator tags and sequences. Not the third horse in Mailchimp vs Klaviyo vs Brew.
#10
7.3/10Resend
Agent layerResend
Engineers in this forum will die on Resend for transactional. They are not wrong.
#11
7.1/10Loops
API-firstLoops
Lean SaaS inbox. Dissent in this forum: stay here if the journey is three emails.
#12
6.7/10SendGrid
API-firstTwilio SendGrid
The pipe. This forum uses it for volume, not for the Mailchimp vs Klaviyo vs Brew design fight.