Chrome Extension · Try for Free

Send WhatsApp Messages to Thousands.
Instantly. Free.

Rocket Sender is the #1 Chrome extension for WhatsApp bulk messaging. No API. No Sign-Up. Just results.

⭐⭐⭐⭐⭐ Trusted by 50,000+ businesses 🟢 4.8/5 on Chrome Web Store 🔒 Try for Free
🚀 Add to Chrome — It's Free See How It Works
web.whatsapp.com 🚀 WhatsApp Hi Sarah, exciting offer just for you! ✓✓ Delivered · 10:24 AM Hey Marcus, check out this deal! 🎁 ✓✓ Delivered · 10:24 AM Hello James, your exclusive invite 🚀 ✓✓ Delivered · 10:24 AM 🚀 ROCKET SENDER Contacts Imported 1,247 Sent: 847 · Pending: 400 Hi {{name}}, exciting offer for you at {{company}}! 🎁 📎 Attach file Interval: 15–30s (Smart) ▶ SENDING... ● Live · 68% complete Est. finish: 4 min 12 sec 0 failed · 0 flagged
Features

Everything You Need to Reach Your Audience

Powerful features, zero complexity. Built for real businesses.

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Bulk Contact Import

Upload CSV or paste numbers. Import thousands of contacts in seconds, no technical skills needed.

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Personalized Messages

Use {{name}}, {{company}}, {{city}} placeholders. Add images, videos, and documents per message.

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Smart Send Intervals

Custom time delays between messages. Stay under WhatsApp's radar, protect your account.

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Real-Time Tracking

Live delivery dashboard. See sent, failed, and pending status. Full post-campaign report.

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Rich Media Attachments

Attach images, videos, PDFs up to 16MB. Make every message visually compelling.

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Zero Setup

No API keys. No accounts. Install, open WhatsApp Web, start sending in under 60 seconds.

Benefits

How Rocket Sender Transforms Your Business

01 / Engagement

Reach Thousands. Feel Personal.

Stop sending copy-paste messages that get ignored. Rocket Sender's dynamic placeholder system customizes every message with the recipient's name, location, or any custom field. Higher personalization means higher open rates, more replies, and stronger customer relationships — at scale.

Hi Sarah, exciting offer just for Acme Corp clients! 🎁 ✓✓ 10:24 AM Personalized field 1,247 unique messages sent 43% reply rate
LIVE DASHBOARD LIVE SENT 847 FAILED 12 PENDING 388 TOTAL 1,247 68% complete · Est. finish: 4 min 12 sec +254712345678 — Delivered ✓✓ +447911123456 — Delivered ✓✓ +19171234567 — Failed (size limit) +6281234567890 — Delivered ✓✓ 📥 Export CSV
02 / Transparency

Never Wonder What Happened to Your Messages.

Rocket Sender's real-time dashboard shows exactly what's happening as it happens. Green for delivered, red for failed. A complete exportable report when your campaign ends. Full visibility, zero guesswork.

03 / Safety

Send at Scale. Stay Safe.

Our intelligent rate-limiting mimics natural human behavior. Randomized send intervals, varied message content via placeholders, and daily send caps keep your WhatsApp account protected. 50,000+ users. Millions of messages sent safely.

✓ Smart rate-limiting ✓ Randomized intervals ✓ Daily send caps ✓ 50,000+ safe users
Guides

Quick Start Guides

Everything you need to hit the ground running.

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BEGINNER

Send WhatsApp Messages without Adding To Contact List

WhatsApp is the most popular messaging platform in the world. While being user-friendly, there is no official way to send messages to numbers not stored in your contact list — here's how to work around it.

3 min read Read Guide →
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PRO TIP

How To Send WhatsApp Messages from an Excel Sheet?

In this article, we will show you how to send customized customer engagement messages in WhatsApp directly from Excel Sheets.

5 min read Read Guide →
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MUST READ

'Phone Number Shared Via URL Is Invalid' : How To Solve?

Are you experiencing the error 'Phone Number shared via URL is invalid' in WhatsApp Web? This guide shows you a proven workaround whenever you encounter this issue.

4 min read Read Guide →
FAQ

Frequently Asked Questions

Everything you need to know before you launch.

Is Rocket Sender safe?
Yes. Rocket Sender runs entirely inside your browser via WhatsApp Web. No external servers touch your data. Everything stays local and private.
Do I need to sign up?
Never. Install, open WhatsApp Web, send. No email, password, or credit card. Ever.
How do I send bulk messages?
(1) Import contacts via CSV or paste numbers. (2) Write your message with optional placeholders. (3) Set your send interval and click Send. That's it.
Can I import contact lists?
Yes. Upload a CSV with thousands of numbers or paste them manually. Duplicate numbers are automatically removed before sending.
Can I send media files?
Yes. Images, videos, PDFs, and Word documents up to 16MB are all supported. You can even attach a unique file per contact.
How many messages can I send per day?
50 messages on Day 1, scaling up to 300 per day from Day 2 onwards. These caps are designed to protect your account from being flagged.
Can I try it for free?
Yes. Get started for free today. No freemium bait-and-switch — every feature is available from day one.
How do I avoid getting banned?
Use personalized messages (not copy-paste spam), set 10–30 second intervals between sends, and never send unsolicited content. Rocket Sender's built-in safeguards handle the technical side for you.
Do messages sync with my phone?
Yes. Rocket Sender uses WhatsApp Web, which is fully synced with your mobile app in real time. Messages appear on all your devices instantly.
What if a message fails?
Failed messages are flagged in red on the live dashboard and included in your final campaign report. Common causes: attachment over 16MB or conflicting browser extensions. Both are easy to resolve.
Start Today

Your Audience Is Waiting.
Start Sending in 60 Seconds.

Join 50,000+ businesses using Rocket Sender to grow on WhatsApp. Try for free. No strings attached.

✅ No Credit Card ✅ No Sign-Up ✅ Works Instantly ✅ 4.8★ Chrome Rating
🚀 Add Rocket Sender to Chrome — Free
Available exclusively on Google Chrome