cf tunnels quick-start supports email protection
Introduced 2026-10-07 · score 0.98
HOW TO USE IT
When sharing a temporary tunnel to a local development server with access limited to specified email recipients, run `cf tunnels quick-start` with `--allowed-mail` and the origin URL. The option accepts email addresses or wildcard domains and may be repeated or comma-separated; use `cloudflared` 2026.9.2 or later for protected tunnels.
cf tunnels quick-start http://localhost:3000 --allowed-mail "alice@example.com,*@example.org"WHY THIS HELPS
Share a temporary tunnel to a local development server with access limited to specified email recipients.
REQUIREMENTS AND LIMITATIONS
- Version: 1.0.0-beta.13
- <origin-url> (required): Local service URL to expose; example uses `http://localhost:3000`.
- --allowed-mail <recipient> (required): Allowed email address or wildcard domain for a protected Quick Tunnel; may be repeated or comma-separated.
- Prerequisite: Protected Quick Tunnels require `cloudflared` 2026.9.2 or later.
- Prerequisite: The `cloudflared` command documents `--allowed-mail` as repeatable or comma-separated.
- Protected tunnels require `cloudflared` 2026.9.2 or later.
- For older or unrecognised `cloudflared` versions, cf reports an upgrade error.
FIRST-PARTY EVIDENCE
- https://github.com/cloudflare/cf/releases/tag/cf%401.0.0-beta.13
- https://github.com/cloudflare/cf/releases/tag/cf@1.0.0-beta.13
- https://github.com/cloudflare/cloudflared/blob/master/cmd/cloudflared/tunnel/cmd.go
- https://github.com/cloudflare/cloudflared/blob/master/RELEASE_NOTES
Check the installed version and the source before using it. Entry JSON