nylas auth login in Practice: Authenticate with a provider to connect your mailbox

Every email, calendar, and contact operation requires auth. nylas auth login manages that layer.

The nylas auth login command connects your email account to the CLI via OAuth. It opens a browser window, walks you through the provider's consent flow, and stores the grant locally.

Syntax

nylas auth login

Examples

Connect Gmail or Outlook:

nylas auth login
# Opens browser for OAuth; follow prompts to connect

How It Works

The CLI stores credentials securely in your system keychain (macOS Keychain, Linux Secret Service, or Windows Credential Manager). Tokens are refreshed automatically — you authenticate once and commands just work.

When to Use This

Reach for nylas auth login during initial setup, in CI/CD pipelines, or when managing multiple connected accounts. Combine with --json to pipe output into other tools.

Tips

Pipe to jq: nylas auth login --json | jq '.' gives you structured data you can filter and transform.

Combine with other commands: Chain nylas auth login with other Nylas CLI commands using shell pipes and variables for complex workflows.

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Full docs: nylas auth login reference — all flags, advanced examples, and troubleshooting.

All commands: Nylas CLI Command Reference

Get started: brew install nylas/nylas-cli/nylas — other install methods