diff --git a/Cargo.lock b/Cargo.lock
index b87820a..8a889d8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1718,6 +1718,7 @@ dependencies = [
  "quoted_printable",
  "r2d2",
  "regex",
+ "serde",
  "tokio",
  "tokio-native-tls",
 ]
diff --git a/lldap_config.docker_template.toml b/lldap_config.docker_template.toml
index 855744f..be992bd 100644
--- a/lldap_config.docker_template.toml
+++ b/lldap_config.docker_template.toml
@@ -66,3 +66,25 @@ database_url = "sqlite:///data/users.db?mode=rwc"
 ## each password.
 ## Randomly generated on first run if it doesn't exist.
 key_file = "/data/private_key"
+
+## Options to configure SMTP parameters, to send password reset emails.
+## To set these options from environment variables, use the following format
+## (example with "password"): LLDAP_SMTP_OPTIONS__PASSWORD
+#[smtp_options]
+## Whether to enabled password reset via email, from LLDAP.
+#enable_password_reset=true
+## The SMTP server.
+#server="smtp.gmail.com"
+## The SMTP port.
+#port=587
+## Whether to connect with TLS.
+#tls_required=true
+## The SMTP user, usually your email address.
+#user="sender@gmail.com"
+## The SMTP password.
+#password="password"
+## The header field, optional: how the sender appears in the email. The first
+## is a free-form name, followed by an email between <>.
+#from="LLDAP Admin <sender@gmail.com>"
+## Same for reply-to, optional.
+#reply_to="Do not reply <noreply@localhost>"
diff --git a/server/Cargo.toml b/server/Cargo.toml
index 4f8a3e1..94452d2 100644
--- a/server/Cargo.toml
+++ b/server/Cargo.toml
@@ -57,6 +57,7 @@ rev = "eb59676a940b15f77871aefe1e46d7b5bf85f40a"
 version = "0.10.0-rc.3"
 features = [
   "builder",
+  "serde",
   "smtp-transport",
   "tokio1-native-tls",
   "tokio1",
diff --git a/server/src/infra/cli.rs b/server/src/infra/cli.rs
index cd0be24..175cac0 100644
--- a/server/src/infra/cli.rs
+++ b/server/src/infra/cli.rs
@@ -21,7 +21,7 @@ pub enum Command {
 
 #[derive(Debug, Clap, Clone)]
 pub struct RunOpts {
-    /// Change config file name
+    /// Change config file name.
     #[clap(short, long, default_value = "lldap_config.toml")]
     pub config_file: String,
 
@@ -33,7 +33,11 @@ pub struct RunOpts {
     #[clap(long)]
     pub ldaps_port: Option<u16>,
 
-    /// Set verbose logging
+    /// Change HTTP API port. Default: 17170
+    #[clap(long)]
+    pub http_port: Option<u16>,
+
+    /// Set verbose logging.
     #[clap(short, long)]
     pub verbose: bool,
 }
diff --git a/server/src/infra/configuration.rs b/server/src/infra/configuration.rs
index cc68fce..49eda50 100644
--- a/server/src/infra/configuration.rs
+++ b/server/src/infra/configuration.rs
@@ -1,13 +1,39 @@
+use crate::infra::cli::RunOpts;
 use anyhow::{Context, Result};
 use figment::{
     providers::{Env, Format, Serialized, Toml},
     Figment,
 };
+use lettre::message::Mailbox;
 use lldap_auth::opaque::{server::ServerSetup, KeyPair};
-use log::*;
 use serde::{Deserialize, Serialize};
 
-use crate::infra::cli::RunOpts;
+#[derive(Clone, Debug, Deserialize, Serialize, derive_builder::Builder)]
+#[builder(pattern = "owned")]
+pub struct MailOptions {
+    #[builder(default = "false")]
+    pub enable_password_reset: bool,
+    #[builder(default = "None")]
+    pub from: Option<Mailbox>,
+    #[builder(default = "None")]
+    pub reply_to: Option<Mailbox>,
+    #[builder(default = r#""localhost".to_string()"#)]
+    pub server: String,
+    #[builder(default = "587")]
+    pub port: u16,
+    #[builder(default = r#""admin".to_string()"#)]
+    pub user: String,
+    #[builder(default = r#""".to_string()"#)]
+    pub password: String,
+    #[builder(default = "true")]
+    pub tls_required: bool,
+}
+
+impl std::default::Default for MailOptions {
+    fn default() -> Self {
+        MailOptionsBuilder::default().build().unwrap()
+    }
+}
 
 #[derive(Clone, Debug, Deserialize, Serialize, derive_builder::Builder)]
 #[builder(
@@ -35,11 +61,19 @@ pub struct Configuration {
     pub verbose: bool,
     #[builder(default = r#"String::from("server_key")"#)]
     pub key_file: String,
+    #[builder(default)]
+    pub smtp_options: MailOptions,
     #[serde(skip)]
     #[builder(field(private), setter(strip_option))]
     server_setup: Option<ServerSetup>,
 }
 
+impl std::default::Default for Configuration {
+    fn default() -> Self {
+        ConfigurationBuilder::default().build().unwrap()
+    }
+}
+
 impl ConfigurationBuilder {
     pub fn build(self) -> Result<Configuration> {
         let server_setup = get_server_setup(self.key_file.as_deref().unwrap_or("server_key"))?;
@@ -77,6 +111,10 @@ impl Configuration {
             self.ldaps_port = port;
         }
 
+        if let Some(port) = cli_opts.http_port {
+            self.http_port = port;
+        }
+
         self
     }
 }
@@ -108,7 +146,7 @@ pub fn init(cli_opts: RunOpts) -> Result<Configuration> {
         ConfigurationBuilder::default().build().unwrap(),
     ))
     .merge(Toml::file(config_file))
-    .merge(Env::prefixed("LLDAP_"))
+    .merge(Env::prefixed("LLDAP_").split("__"))
     .extract()?;
 
     let mut config = config.merge_with_cli(cli_opts);