Source: https://cli.nylas.com/docs/commands/dashboard-domains-create # nylas dashboard domains create The nylas dashboard domains create command registers a domain in your active Dashboard organization. Use a free .nylas.email domain for Agent Account addresses, and pass --region us or --region eu to match the application region created during nylas init. Written by [Qasim Muhammad](https://cli.nylas.com/authors/qasim-muhammad) Staff SRE Published June 19, 2026 Updated June 19, 2026 ## What does nylas dashboard domains create do? The nylas dashboard domains create command registers a domain in your active Dashboard organization. Use a free .nylas.email domain for Agent Account addresses, and pass --region us or --region eu to match the application region created during nylas init. ## Usage ```bash nylas dashboard domains create [domain] --region ``` ## Flags | Flag | Description | | --- | --- | | --json | Output as JSON | | --no-color | Disable color output | | --verbose(-v) | Enable verbose output | | --config | Custom config file path | | --help(-h) | Show help for the command | | --limit | Limit results (most list commands) | | --yes(-y) | Skip confirmations | | --domain | Domain address to register | | --name(-n) | Display name (defaults to the domain) | | --region(-r) | Region to register in (required: us or eu) | ## Examples ### Register a US free domain ```bash nylas dashboard domains create myagent.nylas.email --region us ``` ### Register an EU free domain ```bash nylas dashboard domains create myagent.nylas.email --region eu ``` ### Create an Agent Account on that domain ```bash nylas agent account create user@myagent.nylas.email ``` ## Troubleshooting ### Region is required Pass the same region as your active app. Use `nylas dashboard apps list` to confirm whether the app is in us or eu. ### Domain is already registered Run `nylas dashboard domains check ` to see which region already owns it, then choose a different subdomain if needed. ## Recommended guides [Build a Mastra Email AgentGive a Mastra TypeScript agent email by wrapping the Nylas CLI as a createTool — one subprocess call, JSON in and out, across Gmail, Outlook, and more.](https://cli.nylas.com/guides/mastra-email-agent) [Add Email Sync to Your App Without IMAPSkip per-mailbox IMAP IDLE connections. 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