## Captcha
### Pleroma.Captcha
+
* `enabled`: Whether the captcha should be shown on registration.
* `method`: The method/service to use for captcha.
* `seconds_valid`: The time in seconds for which the captcha is valid.
### Captcha providers
+#### Pleroma.Captcha.Native
+
+A built-in captcha provider. Enabled by default.
+
#### Pleroma.Captcha.Kocaptcha
+
Kocaptcha is a very simple captcha service with a single API endpoint,
the source code is here: https://github.com/koto-bank/kocaptcha. The default endpoint
`https://captcha.kotobank.ch` is hosted by the developer.
```elixir
config :pleroma, Pleroma.Emails.Mailer,
+ enabled: true,
adapter: Swoosh.Adapters.Sendgrid,
api_key: "YOUR_API_KEY"
```
```elixir
config :pleroma, Pleroma.Emails.Mailer,
+ enabled: true,
adapter: Swoosh.Adapters.SMTP,
relay: "smtp.gmail.com",
username: "YOUR_USERNAME@gmail.com",
password: "YOUR_SMTP_PASSWORD",
port: 465,
ssl: true,
- tls: :always,
auth: :always
```
rel: "ugc"
]
```
+
+## Custom Runtime Modules (`:modules`)
+
+* `runtime_dir`: A path to custom Elixir modules (such as MRF policies).