lemmy_utils/src/email.rs

   1 use crate::settings::Settings;
   2 use lettre::{
   3   smtp::{
   4     authentication::{Credentials, Mechanism},
   5     extension::ClientId,
   6     ConnectionReuseParameters,
   7   },
   8   ClientSecurity,
   9   SmtpClient,
  10   Transport,
  11 };
  12 use lettre_email::Email;
  13
  14 pub fn send_email(
  15   subject: &str,
  16   to_email: &str,
  17   to_username: &str,
  18   html: &str,
  19 ) -> Result<(), String> {
  20   let email_config = Settings::get().email.ok_or("no_email_setup")?;
  21
  22   let email = Email::builder()
  23     .to((to_email, to_username))
  24     .from(email_config.smtp_from_address.to_owned())
  25     .subject(subject)
  26     .html(html)
  27     .build()
  28     .unwrap();
  29
  30   let mailer = if email_config.use_tls {
  31     SmtpClient::new_simple(&email_config.smtp_server).unwrap()
  32   } else {
  33     SmtpClient::new(&email_config.smtp_server, ClientSecurity::None).unwrap()
  34   }
  35   .hello_name(ClientId::Domain(Settings::get().hostname))
  36   .smtp_utf8(true)
  37   .authentication_mechanism(Mechanism::Plain)
  38   .connection_reuse(ConnectionReuseParameters::ReuseUnlimited);
  39   let mailer = if let (Some(login), Some(password)) =
  40     (&email_config.smtp_login, &email_config.smtp_password)
  41   {
  42     mailer.credentials(Credentials::new(login.to_owned(), password.to_owned()))
  43   } else {
  44     mailer
  45   };
  46
  47   let mut transport = mailer.transport();
  48   let result = transport.send(email.into());
  49   transport.close();
  50
  51   match result {
  52     Ok(_) => Ok(()),
  53     Err(e) => Err(e.to_string()),
  54   }
  55 }