WhatsApp Auto Sender Studio

Send WhatsApp bulk messages from Excel or CSV — personalised with templates, images and voice notes. No API needed. Free plan.

WHAT IS WHATSAPP AUTO SENDER STUDIO? WhatsApp Auto Sender Studio is a Chrome extension that sends WhatsApp messages to multiple contacts directly through WhatsApp Web. You enter the recipients and write the message yourself — nothing is sent until you review the list and press Start. There is no WhatsApp Business API, no Meta business verification, no phone number migration and no per-conversation billing. SEND WHATSAPP MESSAGES FROM EXCEL OR CSV - Send text messages to multiple numbers you provide - Import contacts from CSV, or import the members of an existing WhatsApp group (Pro / Business) - Contact management and groups so you can reuse the same list without uploading it again (Pro / Business) - Delivery report with export to CSV PERSONALISED MESSAGES WITH CUSTOM PARAMETERS - Custom parameter messages — import a CSV parameter table and every column you add (name, company, date, reference) becomes a per-recipient variable; write {人名} or {日期} in the message and each recipient gets their own value at send time (Pro / Business). Tables are saved locally and can be reused for the next campaign. - Message templates with {欄名} placeholders — {欄名} is a column name from your parameter table, and one of those columns carries the phone number (Pro / Business) IMAGES, VOICE MESSAGES AND TEMPLATES - Send image messages with an optional caption (Pro / Business) - Send voice messages — record a voice note in the popup or attach an audio file, and every recipient receives it as a real WhatsApp voice message (Pro / Business) - Save your best-performing messages as reusable templates (Pro / Business) SEND AT A SAFE PACE - Random send interval, plus delayed send - Pause, resume and stop a batch at any time - Sending continues while the popup is closed - Daily quota tracking with plan-based limits PLANS - Free: 20 messages/day, text only, 1 device - Pro: unlimited messages/day, all features (including custom parameter messages), 1 device - Business: unlimited messages/day, all features (including custom parameter messages), 5 devices HOW TO USE 1. Open https://web.whatsapp.com and sign in 2. Click the WhatsApp Auto Sender Studio icon in the toolbar 3. Paste the phone numbers to message (or, on Pro / Business, save contacts and import them from a CSV) 4. Write your message (or, on Pro / Business, pick a saved template, or switch to Voice and record a voice note) 5. Review the recipient count, then press Start YOUR DATA STAYS IN YOUR BROWSER - Your phone numbers, message text and media files stay in your browser. They are never sent to us. - The only data that leaves your device is: your license key and an anonymous install ID (to activate and validate your license), and a daily count of messages sent (to enforce your plan quota). - If you buy a plan, our payment provider (Stripe) collects your email address so we can deliver your license key. - We do not sell or share your data with third parties. Full policy: https://wass.appza.app/privacy PERMISSIONS EXPLAINED - storage — save your number list, message draft, send progress and license state locally - scripting — run the send routine inside the WhatsApp Web tab you already have open - activeTab — access the WhatsApp Web tab only when you start a send - tabs — find the open WhatsApp Web tab and open the manager window - alarms — keep the send loop running while a batch is in progress - clipboardWrite — place an image on the clipboard so it can be pasted into the WhatsApp composer - debugger — generate trusted keyboard input (Ctrl+V and Enter) in the WhatsApp Web composer. Synthetic DOM events are ignored by WhatsApp Web, so image-with-caption and Enter-to-send do not work without it. Only the CDP Input domain is used (Input.dispatchKeyEvent, Input.dispatchMouseEvent); it never reads page content, network traffic, cookies or credentials, and it attaches only to your active WhatsApp Web tab, only while you press Start, and detaches immediately after each keystroke. NOT AFFILIATED WITH WHATSAPP WhatsApp Auto Sender Studio is an independent tool. It is not affiliated with, endorsed by, or certified by WhatsApp LLC or Meta. You are responsible for complying with WhatsApp's Terms of Service, and for only messaging people who have agreed to hear from you. Do not use this extension to send unsolicited bulk messages.