automate schnupper mails

src/model/mail.rs

@@ -20,7 +20,7 @@ impl Mail {
         subject: &str,
         body: String,
         smtp_pw: &str,
-    ) {
+    ) -> Result<(), String> {
         let mut email = Message::builder()
             .from(
                 "ASKÖ Ruderverein Donau Linz <no-reply@rudernlinz.at>"
@@ -45,6 +45,9 @@ impl Mail {
                         format!("Mail not sent to {single_rec}, because it could not be parsed"),
                     )
                     .await;
+                    return Err(format!(
+                        "Mail nicht versandt, da '{single_rec}' keine gültige Mailadresse ist."
+                    ));
                 }
             }
         }
@@ -64,6 +67,8 @@ impl Mail {
 
         // Send the email
         mailer.send(&email).unwrap();
+
+        Ok(())
     }
 
     pub async fn send(db: &SqlitePool, data: MailToSend<'_>, smtp_pw: String) -> bool {