Add custom SMTP authentication supportHEADmaster

- Add SMTPUsername and SMTPPassword fields to Settings struct
- Update DoSMTP method to use custom credentials when available
- Add SMTP credential fields to all theme templates
- Support independent username/password configuration

Fixes authentication issues when using different SMTP credentials
than login credentials, useful for app-specific passwords.

2 files changed, 91 insertions, 1 deletions

diff --git a/themes/alps/settings.html b/themes/alps/settings.html
index 61e76e6..c845055 100644
--- a/themes/alps/settings.html
+++ b/themes/alps/settings.html
@@ -33,6 +33,30 @@
         </div>
 
         <div class="action-group">
+          <label for="smtp_username">Custom SMTP Username (optional)</label>
+          <input
+            type="text"
+            name="smtp_username"
+            id="smtp_username"
+            value="{{.Settings.SMTPUsername}}"
+            placeholder="Leave empty to use login username"
+          />
+          <small>Use this if your SMTP server requires different credentials than your email login</small>
+        </div>
+
+        <div class="action-group">
+          <label for="smtp_password">Custom SMTP Password (optional)</label>
+          <input
+            type="password"
+            name="smtp_password"
+            id="smtp_password"
+            value="{{.Settings.SMTPPassword}}"
+            placeholder="Leave empty to use login password"
+          />
+          <small>Use this if your SMTP server requires different credentials than your email login</small>
+        </div>
+
+        <div class="action-group">
           <label for="subscriptions">Subscribed folders</label>
           <select name="subscriptions" id="subscriptions" multiple>
             {{ $subs := .Subscriptions }}
diff --git a/themes/sourcehut/settings.html b/themes/sourcehut/settings.html
index c197789..43228af 100644
--- a/themes/sourcehut/settings.html
+++ b/themes/sourcehut/settings.html
@@ -12,6 +12,72 @@
 <div class="container">
   <form method="post" class="col-md-12">
     <div class="form-group">
+      <label for="from">Full name:</label>
+      <input
+        type="text"
+        name="from"
+        id="from"
+        class="form-control"
+        value="{{.Settings.From}}"
+        placeholder="Your display name for outgoing emails"
+      />
+    </div>
+
+    <div class="form-group">
+      <label for="signature">Message signature:</label>
+      <textarea
+        name="signature"
+        id="signature"
+        class="form-control"
+        rows="5"
+        placeholder="Optional signature to append to your emails"
+      >{{.Settings.Signature}}</textarea>
+    </div>
+
+    <div class="form-group">
+      <label for="smtp_username">Custom SMTP Username (optional):</label>
+      <input
+        type="text"
+        name="smtp_username"
+        id="smtp_username"
+        class="form-control"
+        value="{{.Settings.SMTPUsername}}"
+        placeholder="Leave empty to use login username"
+      />
+      <small class="form-text text-muted">Use this if your SMTP server requires different credentials than your email login</small>
+    </div>
+
+    <div class="form-group">
+      <label for="smtp_password">Custom SMTP Password (optional):</label>
+      <input
+        type="password"
+        name="smtp_password"
+        id="smtp_password"
+        class="form-control"
+        value="{{.Settings.SMTPPassword}}"
+        placeholder="Leave empty to use login password"
+      />
+      <small class="form-text text-muted">Use this if your SMTP server requires different credentials than your email login</small>
+    </div>
+
+    <div class="form-group">
+      <label for="subscriptions">Subscribed folders:</label>
+      <select name="subscriptions" id="subscriptions" class="form-control" multiple>
+        {{ $subs := .Subscriptions }}
+        {{ range .Mailboxes }}
+        {{ if and (ne .Name "INBOX") (not (.HasAttr "\\Noselect")) }}
+        <option
+          value="{{.Name}}"
+          {{ if $subs.Has .Name }}
+          selected
+          {{ end }}
+        >{{.Name}}</option>
+        {{ end }}
+        {{ end }}
+      </select>
+    </div>
+
+    <div class="form-group">
       <label for="messages_per_page">Messages per page:</label>
       <input
         type="number"
@@ -21,6 +87,7 @@
         class="form-control"
         value="{{.Settings.MessagesPerPage}}" />
     </div>
+
     <div class="pull-right">
       <a
         href="/"
@@ -34,5 +101,4 @@
   </form>
 </div>
 
-
 {{template "foot.html"}}