# email-sdk adapters (/docs/reference/cli/adapters)



```bash
email-sdk adapters
email-sdk adapters --json
```

The command reads the static CLI registry and does not inspect credentials or make network requests.

The current registry contains 23 routes: Resend, Postmark, SendGrid, Cloudflare, Unosend, Iterable, AWS SES, Mailgun, MailerSend, Brevo, Mailchimp Transactional, SparkPost, Loops, Sequenzy, JetEmail, Lettermint, Primitive, Plunk, Mailtrap, Scaleway, ZeptoMail, MailPace, and SMTP.

The human output includes the routing name, required environment variable names, and one provider note. JSON output returns the same `name`, `env`, and `note` records.

`email-sdk providers` is an accepted command alias.

<Card title="Provider credentials" href="/docs/getting-started/credentials" description="Configure the values listed by this command." />