Local-only Chrome extension that schedules and sends messages in WhatsApp Web. No APIs. No servers. Just a clean in-page UI and a reliable "send at time" engine with privacy-focused post-send actions.
- Schedule multiple messages at specific times (24h format)
- Multi-contact support (comma-separated names) with auto chat-switching
- Message source: typed text or clipboard fallback
- Auto-refresh page (default) - Avoids read confirmations by refreshing WhatsApp Web
- Auto-close tab - Maximum privacy: avoids read confirmations AND online status
- Do nothing - Stay in current chat (original behavior)
I often remembered messages hours early, then forgot to send them. So I needed it.
And because everything else either required WhatsApp Business, signing up for some shady API key, or just didn’t work.
So I built a dumb, brute-force solution that just... works. Locally and mostly reliably.
WAutoSend is not a spam tool.
It does not:
- Send messages to multiple contacts or groups
- Harvest phone numbers or chat lists
- Use any private WhatsApp APIs
- Let you run marketing campaigns
You must open the chat manually.
It only sends one message to that chat, at the time you schedule.
If you're looking for a bulk sender or spam blaster, this is not it.
It’s a small automation helper for personal use only.
This is not in the Chrome Web Store. Load it locally:
- Clone the repo
git clone https://github.com/BDenizKoca/WAutoSend---Message-Scheduler.git
cd WAutoSend---Message-Scheduler- In Chrome go to chrome://extensions
- Enable Developer mode
- Click "Load unpacked" and select the cloned folder
-
Open https://web.whatsapp.com and log in
-
Use the floating FAB
- Open WhatsApp Web and bring up the panel (FAB or Ctrl+Shift+W)
- Add a schedule:
- Time (24h format, e.g., 14:30)
- Message text or check "Use clipboard if empty"
- Contacts (optional, comma-separated; if empty, sends to current chat)
- Choose post-send action:
- Auto-refresh (default) - Refreshes page to avoid read confirmations
- Auto-close tab - Closes tab to avoid read confirmations + online status
- Do nothing - Stay in current chat
- Click "Test Send" to validate functionality
- Keep the tab open; the extension will send at scheduled time(s)
- Contact Names: Use exact names as they appear in your WhatsApp
- Similar Names: Add qualifiers (e.g., "John Smith" vs "John S.")
- Groups: Use the exact group name as it appears in your chat list
- Privacy: Use "Auto-close tab" for maximum privacy (no read confirmations + appears offline)
- Testing: Always use "Test Send" first to verify everything works
- scheduler.js: Message timing, injection, sending, and post-send actions
- ui.js: Interactive panel with radio buttons and real-time status
- storage.js: Persistent settings and schedule management
- styles.css: Modern, responsive UI with privacy-focused design
- debug.js: Comprehensive testing and diagnostic tools
I have really wanted add attachment support somehow, however sadly seems like it is not possible. So feature-complete but open to contributions.
Email: b.denizkoca@gmail.com
GitHub: @BDenizKoca
MIT License - You can use, modify, and distribute freely with attribution.