WhatsApp Sender

Q: How to send WhatsApp messages to multiple contacts?

Install a WhatsApp sender extension, upload or paste a contact list, write a message template, personalize it with fields such as name or company, configure sending intervals, and monitor the results.

Q: Can I send to unsaved numbers?

Yes. With SMDeck, you can import phone numbers with country codes from Excel or CSV and send messages without manually saving every contact first. Use this only for contacts who expect to hear from you.

A free Chrome and Edge extension for sending bulk WhatsApp messages from WhatsApp Web or WhatsApp Business Web. Import Excel or CSV contacts, personalize messages with custom placeholders, set random intervals, and add unsubscribe options for controlled outreach.

Install Free from Chrome Web Store

WhatsApp Web + BusinessExcel / CSV importRandom intervalsUnsubscribe support

Reviewed by SMDeck Last reviewed September 15, 2026

WhatsApp SenderActive in this browser tab

Ready

Unsaved-number chat

+44 7700 900182Not in contacts

Open directly

+44 7700 900182WhatsApp conversation

Hi, is this item available?

Automated marketing

126 recipientsOne personalized campaign

Alex Sent Maya Sent Sam Sending

84 of 126 WhatsApp chats reached

No manual contact saving One campaign, many chats

Chrome Web Store Signals

A WhatsApp Sender Page With Verifiable Product Context

These public listing signals come from the Chrome Web Store listing. The extension is listed there as WARocket Sender:Rocket Sender - WAPI Sender. Checked on September 15, 2026.

Chrome Web StorePublic extension listing

4.8 ratingBased on 2.4K public ratings

20,000 usersUsed by WhatsApp Web sending teams

Updated Sep 3, 2026Version 1.0.38 on the store

"Kindly do not use for SPAMMING."
Chrome Web Store product description, view source.

SMDeck is an independent project and is not affiliated with or endorsed by WhatsApp or Meta. The extension provides workflow controls but does not guarantee account safety or compliance with third-party platform rules.

Free WhatsApp Sender / Chrome Extension

Install A Free WhatsApp Sender Extension

SMDeck WhatsApp Sender is free to install from the Chrome Web Store. It runs in Chrome and Microsoft Edge, and supports both WhatsApp Web and WhatsApp Business Web.

Download Free Extension

Free To Install

Start with the free WhatsApp Sender extension from the Chrome Web Store.

Chrome And Edge

Use it in Google Chrome or Microsoft Edge without installing a desktop app.

WhatsApp + Business

Send from WhatsApp Web or WhatsApp Business Web in the browser.

Excel / CSV Import

Import Contacts And Personalize Every Message

Upload an Excel or CSV contact list, map your columns, and turn every supported or custom field into a message placeholder.

phonenamecompanytagcustom fields

Send to unsaved numbersFrom a phone number to a WhatsApp chat

1 step

prospects.xlsxPhone numbers with country codes

phonecontact

+44 7700 900182Unsaved

Open in WhatsApp

+44 7700 900182Unsaved contact

Hi, is this item available?10:21

Yes, I can share today's offer here.10:22

Start the conversation without adding every number to your address book.

Personalized Message Variables

Turn Excel Fields Into WhatsApp Placeholders

When you upload an Excel or CSV file, every column header can become a reusable placeholder in your message template.

Use standard fields like phone, name, company, and tag, or add custom fields such as coupon_code, order_id, city, plan, and renewal_date for highly personalized outreach.

Personalized bulk marketingOne template becomes many personal WhatsApp messages

126 chats

campaign.xlsx126 recipients

nameoffer

AlexSAVE20

MayaVIP15

SamNEW10

Message template

Hi {{name}}, this week's offer is ready. Use {{offer}} today.

Preview for AlexHi Alex, this week's offer is ready. Use SAVE20 today.

WhatsApp send queue84 / 126

AlexSent

MayaSent

SamNext

Responsible Sending Controls

Manage Sending Pace And Contact Preferences

SMDeck provides random delays, automatic cooldowns, batch controls, failed-send review, and opt-out tools so you can manage the extension workflow more carefully.

Automatic sending controlsSet the rhythm once, then monitor every result

Sending

Random interval6-10 sec

Batch size20 contacts

Automatic pause5 minutes

Campaign progress84 / 126

Now sendingCustomer 084 · Sam

126Total

84Sent

41Pending

1Failed

Pause the queue, review failures, and export campaign results at any time.

Random Send Intervals

Set variable time gaps between messages instead of using one fixed interval for an entire campaign.

Batch Grouping

Split large contact lists into smaller batches and manage each sending round more carefully.

Automatic Long Cooldowns

After sending for a period of time, pause automatically for a longer delay before continuing.

Failed Send Retry

Track failed sends and retry them with controlled timing instead of repeatedly pushing the same contact.

Account Health Reminders

Get reminders when your sending behavior needs a slower pace or a longer break.

One-Click Unsubscribe Button

Add an unsubscribe button to your message so contacts can opt out and future sends can respect that choice.

Sending Limits & Account Health FAQ

Plan Bulk Sends Without Pushing Your Account Too Hard

SMDeck does not set or guarantee a safe daily message count. Its controls help you divide lists into manageable rounds, review results, and decide whether to continue.

How many WhatsApp messages can I send per day?

SMDeck does not set or guarantee a safe daily message count. Start with a smaller list, review the results and contact responses, and decide whether to continue.

What sending controls does SMDeck provide?

SMDeck provides random send intervals, batch grouping, long cooldowns, failed-send review and retry, account reminders, and an unsubscribe option.

How should I start a new campaign?

Start with a smaller contact list, confirm that the imported fields and message template are correct, and review sends, failures, replies, and stop requests before continuing.

Why split contacts into batches?

Batching divides a large contact list into manageable sending rounds, creates space for cooldowns, and helps isolate import or delivery problems before a full list is affected.

What account health signals should I watch?

Pay attention to failed sends, low replies, repeated blocks, spam reports, and contacts asking to stop. When these signals rise, slow down, pause longer, and clean your list before sending again.

Does SMDeck guarantee account safety?

No. The extension provides pacing, batching, retry, unsubscribe, and result-review controls, but it cannot guarantee account safety or compliance with third-party platform rules.

WhatsApp Sender Use Cases

Reach The Right Contacts For Every Business Moment

From promotions to reminders, SMDeck helps teams import segmented lists, personalize each message, pace delivery, and keep replies organized inside WhatsApp Web or WhatsApp Business Web.

E-commerce Promotions

Send product launches, coupon codes, flash sales, and abandoned-cart nudges to buyer segments imported from Excel.

Order Updates

Notify customers about payment status, shipping progress, delivery windows, and post-purchase next steps.

Appointment Reminders

Reduce no-shows for clinics, salons, consultants, tutors, and service teams with personalized time and location fields.

School Announcements

Reach parents and students with class updates, payment reminders, event notices, and urgent schedule changes.

Event Invitations

Invite guests, confirm RSVPs, send venue details, and follow up with segmented lists before and after the event.

Real Estate Follow-Ups

Share listings, viewing times, price updates, and buyer follow-ups with leads grouped by location or property interest.

Restaurant Loyalty

Promote daily menus, member coupons, reservation reminders, birthday offers, and off-peak table campaigns.

Customer Service Follow-Ups

Check satisfaction, send onboarding tips, remind customers about next actions, and reconnect with inactive users.

Feature Comparison

SMDeck Vs Other WhatsApp Sending Options

Choose the right WhatsApp workflow by comparing browser-based bulk sending, built-in WhatsApp tools, official API setup, and regular sender plugins.

Feature	SMDeck WhatsApp Sender	WhatsApp Broadcast List	WhatsApp Business App	WhatsApp API	Regular Bulk Sender Plugin
Best for	Small teams that need Excel import, personalized outreach, pacing controls, and browser workflow.	Simple announcements to existing contacts.	Small businesses managing chats, profile, labels, and catalog.	Developers and larger teams building backend messaging systems.	Basic one-off bulk sending when advanced controls are not required.
Setup	Free Chrome Web Store install for Chrome or Edge.	Built into WhatsApp.	Install WhatsApp Business App.	Requires Business Platform setup and technical integration.	Varies by extension.
WhatsApp Web support	Works with WhatsApp Web and WhatsApp Business Web.	Mainly managed inside WhatsApp apps.	Supports WhatsApp Business workflows.	API-based, not a browser sending workflow.	Usually WhatsApp Web only.
Excel / CSV import	Import contact lists with phone, name, company, tag, and custom fields.	No spreadsheet import workflow.	Contact management is manual or app-based.	Possible through custom systems.	Often supported, quality varies.
Personalized variables	Use any Excel custom field as a placeholder like `{{name}}` or `{{coupon_code}}`.	Not designed for custom placeholders.	Limited template-style personalization.	Strong personalization with developer setup.	May support simple variables.
Safe sending controls	Random intervals, batch grouping, long cooldowns, failed retry, and account health reminders.	Limited pacing controls.	Good for normal chat, limited bulk pacing.	Advanced controls possible with engineering work.	Depends on the plugin.
Opt-out support	One-click unsubscribe button for cleaner future campaigns.	Manual list maintenance.	Manual labels and contact handling.	Can be automated by developers.	Often basic or unavailable.
Extra workflow tools	Includes import, variables, pacing controls, unsubscribe support, and result review in one browser workflow.	No import, variable, or pacing workflow.	Business profile, labels, and catalog tools.	Powerful automation if built into a full system.	Usually focused on sending only.

WhatsApp Sender FAQ

Answers To Common WhatsApp Sender Questions

Quick answers for people comparing WhatsApp sender tools, bulk messaging options, unsaved-number sending, and free Chrome extensions.

What is a WhatsApp sender?

A WhatsApp sender is a tool that helps send WhatsApp messages to contact lists more efficiently, usually with contact import, message templates, personalization fields, and sending controls.

How to send WhatsApp messages to multiple contacts?

Install SMDeck, upload an Excel or CSV list, write your message template, insert placeholders like {{name}}, set sending intervals, and start the campaign from WhatsApp Web.

Can I send to unsaved numbers?

Yes. Import phone numbers with country codes from Excel or CSV and send without manually saving every contact first. Use this for contacts who have opted in or expect your message.

Is WhatsApp sender safe?

No browser sender can guarantee account safety or compliance with third-party platform rules. SMDeck provides pacing, batching, retry, unsubscribe, and result-review controls, while users remain responsible for how they use the extension.

Is there a free WhatsApp sender extension?

Yes. SMDeck WhatsApp Sender is free to install from the Chrome Web Store, works in Chrome and Microsoft Edge, and supports WhatsApp Web plus WhatsApp Business Web.