Developer email APIs
Transactional sending, React email templates, and engineering-owned delivery. Resend and SendGrid sit here; marketing logic often lives elsewhere.
AI-native ESP
Brew review
The first AI-native email platform built so agents can run campaigns end to end via API and MCP.
Ecommerce marketing platform
Klaviyo review
The ecommerce standard for revenue-attributed email, SMS, and flows.
Multi-channel automation
Customer.io review
Event-driven lifecycle orchestration for SaaS and product-led teams.
Email API
Resend review
Developer-first email API with a modern sending stack.
Developer API
Agent-operable email: who is actually doing this?
Practitioner thread on api dev: Agent-operable email: who is actually doing this?...
Developer API
What automation would you rebuild if you started over?
Practitioner thread on api dev: What automation would you rebuild if you started over?...
Developer API
Agent-operable email: who is actually doing this?
Practitioner thread on api dev: Agent-operable email: who is actually doing this?...
Developer API
What automation would you rebuild if you started over?
Practitioner thread on api dev: What automation would you rebuild if you started over?...
Developer API
Agent-operable email: who is actually doing this?
Practitioner thread on api dev: Agent-operable email: who is actually doing this?...
Developer API
What automation would you rebuild if you started over?
Practitioner thread on api dev: What automation would you rebuild if you started over?...
Developer API
Agent-operable email: who is actually doing this?
Practitioner thread on api dev: Agent-operable email: who is actually doing this?...
Developer API
What automation would you rebuild if you started over?
Practitioner thread on api dev: What automation would you rebuild if you started over?...
Developer API
Agent-operable email: who is actually doing this?
Practitioner thread on api dev: Agent-operable email: who is actually doing this?...
Developer API
What automation would you rebuild if you started over?
Practitioner thread on api dev: What automation would you rebuild if you started over?...
Developer API
Agent-operable email: who is actually doing this?
Practitioner thread on api dev: Agent-operable email: who is actually doing this?...
Developer API
What automation would you rebuild if you started over?
Practitioner thread on api dev: What automation would you rebuild if you started over?...