feat: read from and reply_to email config params as mailbox addresses

config/default.toml

@@ -29,5 +29,5 @@ pool = 4
 username="vanikam_mailer"
 password="vanikam_mailer_password"
 server_hostname="smtp.vanikam.example.com"
-from="vanikam@example.com"
+from="Vanikam Info <vanikam@example.com>"
-reply_to="vanikam@example.com"
+reply_to="Vanikam Support <vanikam@example.com>"

src/settings/email.rs

@@ -5,20 +5,33 @@
 use std::env;
 
 use config::{builder::DefaultState, ConfigBuilder};
+use lettre::message::Mailbox;
 use serde::{Deserialize, Serialize};
-use validator::Validate;
+use validator::{Validate, ValidationError};
 
 #[derive(Debug, Clone, Serialize, Deserialize, Validate, Eq, PartialEq)]
 pub struct Email {
     pub username: String,
     pub password: String,
     pub server_hostname: String,
-    #[validate(email)]
+    #[validate(custom(function = "from_address_validation"))]
     pub from: String,
-    #[validate(email)]
+    #[validate(custom(function = "reply_to_address_validation"))]
     pub reply_to: String,
 }
 
+fn from_address_validation(s: &str) -> Result<(), ValidationError> {
+    let msg = "from address must be of format 'Name <email@address>'";
+    let _: Mailbox = s.parse().map_err(|_| ValidationError::new(msg))?;
+    Ok(())
+}
+
+fn reply_to_address_validation(s: &str) -> Result<(), ValidationError> {
+    let msg = "to address must be of format 'Name <email@address>'";
+    let _: Mailbox = s.parse().map_err(|_| ValidationError::new(msg))?;
+    Ok(())
+}
+
 impl Email {
     pub fn env_override(mut s: ConfigBuilder<DefaultState>) -> ConfigBuilder<DefaultState> {
         for (parameter, env_var_name) in [