From 3d3d471cd5626a8cd67c78952cca5cf220a06c4b Mon Sep 17 00:00:00 2001
From: Kieran <kieran@harkin.me>
Date: Mon, 16 Feb 2026 23:12:41 +0000
Subject: [PATCH] fix(email): use proper MIME encoding for UTF-8 responses

Replace bare .body() call with .singlepart(SinglePart::plain()) to ensure
outgoing emails have explicit Content-Type: text/plain; charset=utf-8
header. This fixes recipients seeing raw quoted-printable encoding
(e.g., =E2=80=99) instead of properly decoded UTF-8 characters.
---
 src/channels/email_channel.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/channels/email_channel.rs b/src/channels/email_channel.rs
index e34c7de..2cb5db8 100644
--- a/src/channels/email_channel.rs
+++ b/src/channels/email_channel.rs
@@ -10,6 +10,7 @@
 
 use anyhow::{anyhow, Result};
 use async_trait::async_trait;
+use lettre::message::SinglePart;
 use lettre::transport::smtp::authentication::Credentials;
 use lettre::{Message, SmtpTransport, Transport};
 use mail_parser::{MessageParser, MimeHeaders};
@@ -389,7 +390,7 @@ impl Channel for EmailChannel {
             .from(self.config.from_address.parse()?)
             .to(recipient.parse()?)
             .subject(subject)
-            .body(body.to_string())?;
+            .singlepart(SinglePart::plain(body.to_string()))?;
 
         let transport = self.create_smtp_transport()?;
         transport.send(&email)?;