Rewrite README + use lettre crate to validate email address instead of regex

common/src/utils.rs

@@ -1,29 +1,5 @@
-use std::sync::LazyLock;
-
-use regex::Regex;
-
 use crate::consts;
 
-pub enum EmailValidation {
-    Ok,
-    NotValid,
-}
-
-static EMAIL_REGEX: LazyLock<Regex> = LazyLock::new(|| {
-    Regex::new(
-        r"^([a-z0-9_+]([a-z0-9_+.]*[a-z0-9_+])?)@([a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,6})",
-    )
-    .expect("Error parsing email regex")
-});
-
-pub fn validate_email(email: &str) -> EmailValidation {
-    if EMAIL_REGEX.is_match(email) {
-        EmailValidation::Ok
-    } else {
-        EmailValidation::NotValid
-    }
-}
-
 pub enum PasswordValidation {
     Ok,
     TooShort,