feat(gmail): auto-populate From display name + fix reply-all to own message

.changeset/gmail-default-sender.md

@@ -0,0 +1,7 @@
+---
+"@googleworkspace/cli": minor
+---
+
+feat(gmail): auto-populate From header with display name from send-as settings
+
+Fetch the user's send-as identities to set the From header with a display name in all mail helpers (+send, +reply, +reply-all, +forward), matching Gmail web client behavior. Also enriches bare `--from` emails with their configured display name.

.changeset/gmail-self-reply-fix.md

@@ -0,0 +1,7 @@
+---
+"@googleworkspace/cli": patch
+---
+
+fix(gmail): handle reply-all to own message correctly
+
+Reply-all to a message you sent no longer errors with "No To recipient remains." The original To recipients are now used as reply targets, matching Gmail web client behavior.

src/auth_commands.rs

@@ -275,9 +275,15 @@ async fn handle_login(args: &[String]) -> Result<(), GwsError> {
         ..Default::default()
     };
 
-    // Ensure openid + email scopes are always present so we can identify the user
-    // via the userinfo endpoint after login.
-    let identity_scopes = ["openid", "https://www.googleapis.com/auth/userinfo.email"];
+    // Ensure openid + email + profile scopes are always present so we can
+    // identify the user via the userinfo endpoint after login, and so the
+    // Gmail helpers can fall back to the People API to populate the From
+    // display name when the send-as identity lacks one (Workspace accounts).
+    let identity_scopes = [
+        "openid",
+        "https://www.googleapis.com/auth/userinfo.email",
+        "https://www.googleapis.com/auth/userinfo.profile",
+    ];
     for s in &identity_scopes {
         if !scopes.iter().any(|existing| existing == s) {
             scopes.push(s.to_string());

src/helpers/gmail/forward.rs

@@ -19,7 +19,7 @@ pub(super) async fn handle_forward(
     doc: &crate::discovery::RestDescription,
     matches: &ArgMatches,
 ) -> Result<(), GwsError> {
-    let config = parse_forward_args(matches)?;
+    let mut config = parse_forward_args(matches)?;
 
     let dry_run = matches.get_flag("dry-run");
 
@@ -34,6 +34,7 @@ pub(super) async fn handle_forward(
             .map_err(|e| GwsError::Auth(format!("Gmail auth failed: {e}")))?;
         let client = crate::client::build_client()?;
         let orig = fetch_message_metadata(&client, &t, &config.message_id).await?;
+        config.from = resolve_sender(&client, &t, config.from.as_deref()).await?;
         (orig, Some(t))
     };