# Setting: `smtp_encryption`

- **Constant:** `ConfigInterface::SMTP_ENCRYPTION`
- **Category:** `email`
- **Type:** `select`
- **Required:** yes
- **Sensitive:** no
- **Validation:** `required|string|in:starttls,tls,ssl,none`
- **Placeholder / default hint:** `starttls`

## Description

SMTP encryption: starttls/tls for port 587 (e.g. Brevo), ssl for port 465 SMTPS, none for plain SMTP

## Allowed options

- `starttls`
- `tls`
- `ssl`
- `none`

## Change via CLI

```bash
featherpanel saas getsetting smtp_encryption
featherpanel saas setsetting smtp_encryption "<value>"
```

## Change via API

```http
PATCH /api/admin/settings
Content-Type: application/json

{ "smtp_encryption": "<value>" }
```