Send Email Tool: Don't persist message on SMTP only connections (#19756)

Previously this blocked users who only had SMTP configured to send
outbound emails, this fixes it by making messageChannel and persist
layer conditional

packages/twenty-server/src/modules/messaging/message-outbound-manager/resolvers/send-email.resolver.ts

@@ -79,11 +79,13 @@ export class SendEmailResolver {
 
       const sendResult = await this.sendEmailService.sendComposedEmail(data);
 
-      await this.sendEmailService.persistSentMessage(
-        sendResult,
-        data,
-        workspace.id,
-      );
+      if (data.shouldPersistMessage) {
+        await this.sendEmailService.persistSentMessage(
+          sendResult,
+          data,
+          workspace.id,
+        );
+      }
 
       const attachmentFileIds = (input.files ?? []).map((file) => file.id);
 

packages/twenty-server/src/modules/messaging/message-outbound-manager/services/send-email.service.ts

@@ -43,7 +43,7 @@ export class SendEmailService {
         body: data.plainTextBody,
         recipients: data.recipients,
         connectedAccount: data.connectedAccount,
-        messageChannelId: data.messageChannelId,
+        messageChannelId: data.messageChannelId!,
         inReplyTo: data.inReplyTo,
         workspaceId,
       });