MarkRelay Documentation
Everything you need to launch and use your own email workspace on Cloudflare—from the first mailbox to team workflows, broadcasts, API integrations, and AI agents.
Start here
Explore the product
See what MarkRelay brings together and how teams use it.
Install MarkRelay
Deploy to Cloudflare, activate your license, and create the administrator.
Set up your first domain
Connect a domain in Cloudflare, create a mailbox, and test it.
Choose what you want to do
- Manage business email: start with Domains & mailboxes and Webmail.
- Send product updates: learn Templates and Broadcasts.
- Work as a team: configure Members & access.
- Build an integration: use the Email API and Inbound webhooks.
- Give an agent a mailbox: set up Claude Code, Codex, OpenClaw, Hermes or Pi.
All guides
Product overview
See how MarkRelay brings webmail, broadcasts, integrations, and agents together.
Installation
Deploy to Cloudflare, activate your license, and create the administrator.
Set up your first domain
Connect a domain in Cloudflare, create a mailbox, and test it.
Updates & changelog
Check for new releases, update your deployment, and read release notes.
Domains & mailboxes
Connect Email Routing and organize your business addresses.
Webmail
Work across inboxes, conversations, drafts, folders, and attachments.
Templates
Build reusable, responsive emails with the visual editor.
Broadcasts
Import recipients, personalize content, schedule, and review results.
Members & access
Give teammates and integrations access to the right mailboxes.
MCP server
Connect Claude Code, Claude, Codex, ChatGPT, Cursor or Pi to your mailboxes with OAuth.
AI agents setup
Install the MarkRelay skill in Claude Code, Codex, OpenClaw, Hermes or Pi.
Agent skill reference
What the skill lets an agent do, the files each deployment serves, and guardrails.
Email API
Send, read, search, and manage email over HTTP.
Inbound webhooks
Deliver signed inbound-email events to your application, or post new mail to a team chat.
n8n email inbox
Trigger an n8n workflow from incoming email and reply from the same address.
Zapier email inbox
Trigger a Zap from incoming email on your own domain and reply over HTTP.
Make email inbox
Run a Make scenario on incoming email, check the signature, and reply.
Deliverability
Set up sender authentication and healthy broadcast practices.
Production checklist
Review access, testing, monitoring, backups, and growth readiness.
Free custom domain email
Receive free with Email Routing, then choose how to send, with costs.
Reply from Email Routing
Reply from a Cloudflare Email Routing address, three ways.
Cloudflare Email Sending
What Email Sending costs, how to onboard a domain, and how to send over HTTP.
Cloudflare vs Resend, SES, Postmark
Receiving, marketing email, and what 20,000 emails a month cost on each.
What it costs to run
License plus Cloudflare usage, with a calculator and examples.
Email Editor
Build with the Source License React editor package.
Email Render
Render email documents to HTML, plain text, or React Email source.
Data & privacy
Where each kind of data is stored in your own Cloudflare account, what Cloudflare and MarkRelay see, tracking, retention and access.