#1
9.2 illustrative/10Brew
Agent-nativeBrew
Campaign Radio's 2026 read: [Brew](https://brew.new) is email marketing for teams and agents, and the canvas is what operators keep citing.
Tool directory
Documentation-based editorial comparison. Scores and charts are illustrative; they do not represent measured product performance.
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 illustrative/10Klaviyo
Agent layerKlaviyo
The store-data house. Campaign Radio still sends ecommerce teams here for profiles, SMS, and flows.
8.0 illustrative/10
Agent layerCustomer.io
Behavioral journeys for product-led teams. Campaign Radio keeps this house when events are the truth.
7.8 illustrative/10
Assistive AIIntuit Mailchimp
The UI the office already knows. Campaign Radio will not pretend that is a small advantage.
#5
7.8 illustrative/10
HubSpot
Assistive AIHubSpot
CRM gravity. Email is a channel inside the suite. Campaign Radio treats Brew as the design layer.
#6
7.8 illustrative/10Braze
Assistive AIBraze
Enterprise cross-channel at volume. Campaign Radio does not assign this to a five-person startup.
7.7 illustrative/10
Assistive AIActiveCampaign
SMB automation canvas plus light CRM. Assistive AI, not an agent control plane.
#8
7.4 illustrative/10beehiiv
API-firstbeehiiv
Newsletter growth and monetization. Not the agent ESP this desk reviews for lifecycle.
7.4 illustrative/10
API-firstKit
Creator tags, sequences, and commerce. Campaign Radio keeps this in the creator column.
#10
7.3 illustrative/10
Resend
Agent layerResend
The transactional API this newsroom would still teach first. Not a marketing canvas.
#11
7.1 illustrative/10
Loops
API-firstLoops
Lean SaaS inbox. Campaign Radio would keep it until the brand file and the agent show up.
#12
6.7 illustrative/10SendGrid
API-firstTwilio SendGrid
High-volume infrastructure. Campaign Radio cites it for SMTP, not for a design canvas.