ResendResend
Resend
Deliver application email through Resend while Unsendbox manages agent workflows.
Outbound email transport for application and transactional messages.
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← RETURN TO ROOTUNSENDBOX INTEGRATIONS
Connect the tools behind your email workflows
Use Unsendbox with delivery infrastructure, AI clients, and existing mailbox providers. Choose the connection that matches where email is sent, managed, or acted on.
Email transport
Connect the delivery and mailbox infrastructure around Unsendbox-managed workflows.
- Resend
Postmark
Postmark
Send domain email through Postmark and ingest authenticated raw inbound messages.
Outbound delivery and inbound email transport for Unsendbox-managed addresses.
View setup: Postmark- Amazon SES
Amazon SES
Amazon SES
Use Amazon SES as delivery infrastructure for Unsendbox-managed email workflows.
Cloud email transport for outbound delivery.
Registry entry
- SMTP relay
SMTP relay
SMTP relay
Connect an SMTP relay without changing how agents operate email in Unsendbox.
Provider-neutral outbound email transport.
Registry entry
- for Gmail™
Gmail/Google Workspace
Gmail/Google Workspace
Keep Google Workspace as the mailbox layer and forward selected email to Unsendbox.
Existing mailbox and selective forwarding transport.
Gmail is a trademark of Google LLC
View setup: Gmail/Google Workspace
Agents and AI clients
Let external AI clients use organization-scoped Unsendbox tools through MCP.
Claude Code
Claude Code
Run organization-scoped Unsendbox email workflows from Claude Code through MCP.
External AI client for operating Unsendbox tools.
View setup: Claude Code- ChatGPT
ChatGPT
ChatGPT
Connect ChatGPT to agent-first email operations exposed by Unsendbox.
External AI client for Unsendbox workflows.
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- Cursor
Cursor
Cursor
Use Cursor with the remote Unsendbox MCP surface for email operations.
Developer AI client for Unsendbox tools.
Registry entry
- Opencode
Opencode
Opencode
Connect Opencode to organization-scoped Unsendbox tools through MCP.
Open-source agent client for Unsendbox operations.
Registry entry
Push delivery
Deliver communication events to mobile and web clients through existing push providers.
- APNs
APNs
APNs
Deliver Apple push notifications for communication events managed by Unsendbox.
Push delivery channel for Apple devices.
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- FCM
FCM
FCM
Deliver Firebase push notifications for communication events managed by Unsendbox.
Push delivery channel for Android and web clients.
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Need another connection?
Use Unsendbox forwarding, domain setup, mirror rules, or the MCP server to connect another part of your email workflow.