read SMTP configuration

2026-02-12 18:45:41 +00:00 · 2021-06-29 21:08:40 +05:30
parent 481cb95cd2
commit 804c81da38
6 changed files with 391 additions and 16 deletions
--- a/src/email.rs
+++ b/src/email.rs
@@ -0,0 +1,77 @@
+/*
+* Copyright (C) 2021  Aravinth Manivannan <realaravinth@batsense.net>
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU Affero General Public License as
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+// The html we want to send.
+const HTML: &str = r#"<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Hello from Lettre!</title>
+</head>
+<body>
+    <div style="display: flex; flex-direction: column; align-items: center;">
+        <h2 style="font-family: Arial, Helvetica, sans-serif;">Hello from Lettre!</h2>
+        <h4 style="font-family: Arial, Helvetica, sans-serif;">A mailer library for Rust</h4>
+    </div>
+</body>
+</html>"#;
+
+use lettre::{
+    message::{header, MultiPart, SinglePart},
+    transport::smtp::authentication::Credentials,
+    AsyncSmtpTransport, AsyncTransport, Message, Tokio1Executor,
+};
+
+async fn email() {
+    let email = Message::builder()
+        .from("NoBody <nobody@domain.tld>".parse().unwrap())
+        .reply_to("Yuin <yuin@domain.tld>".parse().unwrap())
+        .to("Hei <hei@domain.tld>".parse().unwrap())
+        .subject("Happy new async year")
+        .multipart(
+            MultiPart::alternative() // This is composed of two parts.
+                .singlepart(
+                    SinglePart::builder()
+                        .header(header::ContentType::TEXT_PLAIN)
+                        .body(String::from(
+                            "Hello from Lettre! A mailer library for Rust",
+                        )), // Every message should have a plain text fallback.
+                )
+                .singlepart(
+                    SinglePart::builder()
+                        .header(header::ContentType::TEXT_HTML)
+                        .body(String::from(HTML)),
+                ),
+        )
+        .unwrap();
+
+    let creds =
+        Credentials::new("smtp_username".to_string(), "smtp_password".to_string());
+
+    let mailer: AsyncSmtpTransport<Tokio1Executor> =
+        AsyncSmtpTransport::<Tokio1Executor>::relay("smtp.gmail.com")
+            .unwrap()
+            .credentials(creds)
+            .build();
+
+    // Send the email
+    match mailer.send(email).await {
+        Ok(_) => println!("Email sent successfully!"),
+        Err(e) => panic!("Could not send email: {:?}", e),
+    }
+}