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Sendmux

HQ
Melbourne
9 Total Employees
Year Founded: 2026
Sendmux gives AI agents real email inboxes, controlled sending, live inbox events, and developer tools in one email API.
Sendmux is built for teams that want AI agents to work with real email, not just send one-way messages. Each agent can have its own mailbox, read threads, process attachments, send replies, and react to new messages through webhooks or Server-Sent Events. For sending, teams can use SMTP, Gmail, Outlook, or managed Amazon SES. Sendmux handles delivery groups, quotas, weighted routing, provider health, and failover, so agent email does not depend on a single sending account. Developers can connect through REST APIs, SDKs, CLI, MCP tools, and Sendmux Skills. It fits support agents, sales agents, scheduling agents, research agents, workflow automation, and SaaS platforms that need isolated email infrastructure per agent, customer, or workspace.

Sendmux Offices

Hybrid Workspace

Employees engage in a combination of remote and on-site work.

Typical time on-site: Flexible
HQMelbourne, Victoria, AUS

Technology We Use

AWS (Amazon Web Services)
AWS (Amazon Web Services)
SERVICES
CSS
CSS
LANGUAGES
DigitalOcean
DigitalOcean
SERVICES
Docker
Docker
FRAMEWORKS
GitHub
GitHub
SERVICES
Golang
Golang
LANGUAGES
gRPC
gRPC
FRAMEWORKS
JavaScript
JavaScript
LANGUAGES
Kafka
Kafka
FRAMEWORKS
Kubernetes
Kubernetes
FRAMEWORKS
Next.js
Next.js
FRAMEWORKS
Node.js
Node.js
FRAMEWORKS
OAuth
OAuth
FRAMEWORKS
Playwright
Playwright
FRAMEWORKS
PostgreSQL
PostgreSQL
DATABASES
React
React
LIBRARIES
React Native
React Native
FRAMEWORKS
Redis
Redis
DATABASES
Rust
Rust
LANGUAGES
TensorFlow
TensorFlow
FRAMEWORKS
Terraform
Terraform
FRAMEWORKS
TypeScript
TypeScript
LANGUAGES
Basecamp
Basecamp
PROJECT MANAGEMENT
Canva
Canva
DESIGN
Figma
Figma
DESIGN
Google Analytics
Google Analytics
ANALYTICS
Photoshop
Photoshop
DESIGN
Apollo
Apollo
LEAD GEN
ZoomInfo
ZoomInfo
LEAD GEN
Spotzee
Spotzee
CRM
Spotzee
Spotzee
EMAIL
Basecamp
Basecamp
PROJECT MANAGEMENT
Microsoft Teams
Microsoft Teams
COLLABORATION