adds an activity when sending an email

biz/admin.py

@@ -399,6 +399,13 @@ class ProspectAdmin(SyncedObjectAdmin):
                     fail_silently=False,
                 )
                 sent_count += 1
+
+                activity = Activity.objects.create(
+                    type=ActivityType.MAIL,
+                    status=Status.CONTACTED,
+                    description=f"Email sent: {email_template.subject}"
+                )
+                activity.prospects.add(prospect)
             except Exception as e:
                 error_emails.append(prospect.email)
                 logger.error(f'Failed to send email to {prospect.email}: {str(e)}')