graph: sender display name from panel

dist/modules/email/graphAdapter.js

@@ -89,18 +89,19 @@ import { getSiteIntegrations } from '../payload/index.js';
                         sent: false
                     };
                 }
-                // The panel's from-address is used as Reply-To, NOT as the message From.
+                // Display name on the From, WITHOUT triggering Send-As.
                 //
-                // Why: app-only Graph sends from GRAPH_SENDER's mailbox. If we also set a
-                // `from` that differs from that mailbox, Exchange demands "Send As"
-                // permission on it and rejects with ErrorSendAsDenied otherwise. So we
-                // never override `from` — Graph stamps the mail as GRAPH_SENDER (the
-                // mailbox we legitimately own) — and route replies to the panel address
-                // via Reply-To. Recipients see the mail from forms@… but replying reaches
-                // the real destination. No Send-As needed.
+                // The trick: we may set a `from` as long as its ADDRESS stays the sender
+                // mailbox (GRAPH_SENDER) — only the display NAME changes. Exchange only
+                // demands Send-As when the from ADDRESS differs from the mailbox, so a
+                // same-address / custom-name From is allowed and gives each project its
+                // own sender label (e.g. "Kancelaria Kędzierski") over the shared mailbox.
+                //
+                // The panel's from-address becomes Reply-To (so replies reach the client),
+                // and the panel's from-name becomes the sender display name.
                 const panel = await getSiteIntegrations(payload);
                 const replyToAddress = panel.smtpFromAddress || undefined;
-                const replyToName = panel.smtpFromName || undefined;
+                const senderName = panel.smtpFromName || undefined;
                 const to = toRecipients(message.to);
                 if (to.length === 0) {
                     payload.logger.error('[ipal] Email not sent: no valid recipient.');
@@ -116,10 +117,7 @@ import { getSiteIntegrations } from '../payload/index.js';
                 const replyTo = message.replyTo ? toRecipients(message.replyTo) : replyToAddress ? [
                     {
                         emailAddress: {
-                            address: replyToAddress,
-                            ...replyToName ? {
-                                name: replyToName
-                            } : {}
+                            address: replyToAddress
                         }
                     }
                 ] : [];
@@ -136,7 +134,17 @@ import { getSiteIntegrations } from '../payload/index.js';
                     ...message.bcc ? {
                         bccRecipients: toRecipients(message.bcc)
                     } : {},
-                    // NO `from` — Graph uses GRAPH_SENDER's own mailbox, so no Send-As.
+                    // From with the sender's OWN address (no Send-As) plus an optional
+                    // display name from the panel. Omit entirely when no name is set —
+                    // Graph then uses the mailbox's default name.
+                    ...senderName ? {
+                        from: {
+                            emailAddress: {
+                                name: senderName,
+                                address: env.sender
+                            }
+                        }
+                    } : {},
                     ...replyTo.length > 0 ? {
                         replyTo
                     } : {}