Uploading files or messages to Slack often comes with a quick 📤 reaction combo. Use 📤📱💬 when sharing from your phone, or 📤🌐📊 to show you’re uploading web-based reports. The 📤📊📥 stack works well for data-heavy posts, while 📤📧📂 signals a more formal file share. These combos shine in team chat updates or quick project check-ins.