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Email Setup

Multi-Alias Email

Route different email addresses to separate inboxes within one workspace.

A single workspace can have multiple inboxes — one per product, region, or team function. Each inbox has its own email address, routing rules, and (optionally) AI configuration.

Common multi-inbox setups

ScenarioInboxes
By functionsupport@, billing@, sales@
By regionsupport-us@, support-eu@
By productapp-support@, api-support@
By brandhello@brand1.com, hello@brand2.com

Creating additional inboxes

  1. Go to Settings → Inboxes → New inbox
  2. Repeat the custom domain setup for each new address
  3. In Resend, add a route for each new address pointing to its webhook URL

Each inbox can have independent:

  • Default assignee (agent or group)
  • AI settings (toggle overrides and thresholds)
  • Tags applied automatically to incoming tickets
  • SLA targets

Catch-all wildcard

If you want every address on a domain to route to Ticket0 (with Ticket0 splitting them by alias), use a wildcard route:

  1. In Resend, set the match pattern to *@yourcompany.com
  2. In Ticket0, create an inbox for each alias you want to handle separately
  3. Use routing rules (Settings → Routing) to direct tickets by their To: address to the right inbox

Routing rules

Routing rules evaluate conditions on each incoming ticket and set the assignee or inbox. For example:

  • If To contains billing@ → assign to Billing group
  • If Subject contains urgent → assign to On-call agent

Configure rules in Settings → Routing → New rule.

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