Bulk WhatsApp messages for shops and small businesses

Built for businesses that already talk to customers on WhatsApp

In India most small businesses already run on WhatsApp. The saree shop sends new designs, the clinic confirms appointments, the CA reminds clients about GST dates, and the builder shares floor plans. The problem starts when the list grows past what you can forward by hand, and the official API looks expensive and complicated for a business with 400 customers.

Rapid Sender fills that gap. It works with the WhatsApp or WhatsApp Business app number you already use, so customers see the same number they have been chatting with. Every customer gets a separate, personal message, and their replies land in your normal chats where you already answer them.

Ways small businesses use it

• Shops and boutiques: festive offers, new stock arrivals, end-of-season sale dates, with the customer's name in the greeting and a photo of the collection

• Clinics, dentists and labs: appointment reminders with the date and time from your sheet, follow-up visit reminders and report-ready messages

• Real estate agents and builders: a project brochure PDF with the first page shown as a preview, site-visit invites and price list updates for interested buyers

• Coaching, gyms and dance classes: batch timings, renewal reminders with the amount due, and holiday notices

• Restaurants and caterers: a menu PDF before a festival, or a thank-you note with a discount for regulars

• Service providers like CAs, insurance agents and repair shops: due-date reminders with each client's own amount and policy or invoice number

• Events and community groups: invitations, passes or schedules sent to registered members, with each member's name printed on the pass

How to send an offer or reminder to your customers

1. 1

   Export your customer list

   Save your customers as an Excel or CSV file with column names in the first row, for example name, phone, amount, date. Most billing and POS software can export this, or start from the sample sheet in Rapid Sender.

2. 2

   Link your business WhatsApp

   Open Rapid Sender on your computer and scan the QR code from the WhatsApp Business app (Linked devices, then Link a device). On a phone, use the pairing-code option instead.

3. 3

   Upload contacts

   Upload the file in the Contacts step. Numbers without a country code get the one you choose, India +91 by default, and numbers are checked before sending.

4. 4

   Write a personal message

   Insert {{name}} and any other column, such as {{amount}} or {{date}}, with the buttons above the box. Use bold for the offer price and look at the live preview for one customer.

5. 5

   Add your catalogue or photo

   Attach one file, such as a catalogue PDF, an offer poster, a short product video or a voice note, up to 100 MB. With a PDF, your message goes as its caption.

6. 6

   Send, then follow up on the report

   Start sending and watch the live report. Download it as Excel to see who was sent the message and which numbers are not on WhatsApp, so you can clean your list.

Message templates you can adapt

• Festive offer: Hi {{name}}, Diwali greetings from Shree Krishna Sarees! Flat 20% off on all silk sarees till Sunday. See the new collection in the photo and reply to reserve yours.

• Appointment reminder: Hello {{name}}, this is a reminder of your appointment at Smile Dental Clinic on {{date}} at {{time}}. Reply 1 to confirm or 2 to reschedule.

• Payment due: Dear {{name}}, your invoice {{invoice}} of ₹{{amount}} is due on {{date}}. Please ignore if paid. Thank you for your business – Mehta & Co.

• Real estate: Hi {{name}}, as discussed, here is the brochure for Green Valley 2 and 3 BHK in {{city}}. Site visits are open this weekend. Shall I book a slot for you?

• Renewal: Hi {{name}}, your gym membership ends on {{date}}. Renew this week and get one month free. See you at FitZone!

• Thank-you note: Thank you for shopping with us, {{name}}! Show this message on your next visit for ₹100 off on bills above ₹999.

Tips for business messages people actually read

• Lead with the customer's name and one clear reason for writing, such as the offer, the date or the amount, in the first line

• Keep it short: three or four lines plus a photo or PDF does better than a long paragraph

• Put the key detail in bold, like the discount or the appointment time, using the toolbar

• Give one simple next step, such as "reply YES" or "call us on this number", instead of only a link

• Send at a sensible hour, for example late morning or early evening, not late at night

• After the send, remove numbers marked not on WhatsApp so your next list is cleaner

Consent and the rules to follow

Send only to customers who gave you their number and would expect to hear from you, such as buyers, patients, members and enquiries. Buying number lists or messaging strangers is the quickest way to get reported, and WhatsApp may limit or ban a number that many people report. It also breaks WhatsApp's terms and, for promotional messages, can break local rules on unsolicited marketing.

Make it easy to stop: add a line such as "Reply STOP if you don't want offers" and remove those people from your sheet. Keep promotions occasional, put the customer's name in every message, and send in batches rather than to your whole list at once.

Community, religious and political groups: keep messages to your own members, and follow election-commission and local rules on campaign messages. Rapid Sender is not meant for mass campaigning to people who did not sign up.

When the official WhatsApp Business API makes more sense

Rapid Sender suits small and medium lists of people who know you, a few hundred or a few thousand at a time, without any cost. If you need to message tens of thousands of customers every day, need automated replies or a chatbot, want a green-tick verified profile, or need a shared inbox for a large support team, look at the official WhatsApp Business Platform from Meta through an approved provider.

The API charges for messages and needs approved message templates, but it is designed for that volume. Many businesses start with a free tool like Rapid Sender and move to the API once WhatsApp becomes a major sales channel.

Frequently asked questions