diff --git a/config_sample.toml b/config_sample.toml
index 4cc2794..4a6e694 100644
--- a/config_sample.toml
+++ b/config_sample.toml
@@ -17,6 +17,7 @@ transport = "File" #or Smtp
 from = "from@address.cz"
 path = "Maildir"
 #server = "smtp.server.cz"
+#port = 25
 #user = "user"
 #password = "password"
 #tls = true
diff --git a/src/backend/mail.rs b/src/backend/mail.rs
index e332cd6..9e98832 100644
--- a/src/backend/mail.rs
+++ b/src/backend/mail.rs
@@ -107,6 +107,11 @@ cfg_if! { if #[cfg(feature = "ssr")] {
                     } else {
                         AsyncSmtpTransport::<Tokio1Executor>::relay(&self.server().clone().unwrap_or_default())
                     }.expect("Cannot create SMTP mail transport");
+                    let transport = if let Some(p) = self.port() {
+                        transport.port(p)
+                    } else {
+                        transport
+                    };
                     if self.user().is_some() && self.password().is_some() {
                         let cred = Credentials::new(self.user().clone().unwrap(), self.password().clone().unwrap());
                         transport.credentials(cred).build().send(msg.build_mail(self.from().to_string())?).await?;
diff --git a/src/config.rs b/src/config.rs
index d4abf96..83294da 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -65,6 +65,7 @@ pub struct Mailing {
     from: String,
     path: Option<String>,
     server: Option<String>,
+    port: Option<u16>,
     user: Option<String>,
     password: Option<String>,
     tls: Option<bool>
@@ -84,6 +85,9 @@ impl Mailing {
     pub fn server(&self) -> &Option<String> {
         &self.server
     }
+    pub fn port(&self) -> Option<u16> {
+        self.port
+    }
     pub fn user(&self) -> &Option<String> {
         &self.user
     }