Best Bulk WhatsApp Message Sender Software in Kolkata

If keeping the shop's long-standing number matters most, it deserves a place on the shortlist. Everything leaves through Meta Cloud API or MSG91, a buyer file of twenty thousand rows loads with duplicates folded, rate cards travel as Hindi or English PDF headers, and each slice is priced before release. The deciding factor is your list: buyers who never agreed cannot be made into a lawful audience by any tool.

WhatsApp's rules permit mass automated sending only via the Business Platform it authorises, not from the everyday WhatsApp or WhatsApp Business apps. A product that drives a paired phone or a browser tab breaks that rule by design, so its numbers often end up restricted or banned. The Business API is the permitted path for volume: numbers registered with Meta, templates reviewed in advance, and limits that rise with good conduct.

Not through KaamGPT at present, since the editor's template languages stop at English, English (US) and Hindi, which rules out a Bengali-script submission. Most Kolkata senders keep the template brief and plain, put the name, date and sum in placeholders, and then switch to Bengali after the customer answers, because messages inside the 24-hour service window are normal chat, not templates.

Yes. Hindi sits alongside English and English (US) in the template editor, so a revision notice can be written in Devanagari with the new card as a PDF header and the shop's name filling {{1}}. Point it only at buyers comfortable in Hindi and run an English twin for the rest. Each template passes KaamGPT's reviewer and then Meta before it can be used.

A fresh portfolio may reach 250 separate people in any rolling day, and people already chatting inside an open service window do not count. Business verification, or 2,000 well-rated templates landing on different numbers within 30 days, opens the 2,000 rung. Higher up, Meta raises the ceiling itself when quality holds and at least half the allowance got used in the past week. Treat week one as 250-contact slices.

Months before Mahalaya, not days. A new number needs time to climb Meta's messaging tiers, templates need KaamGPT's review and Meta's approval, and a rejected template costs another round. Connecting the number in June or July, sending smaller slices through August, and having festive templates approved by early September leaves room for the volume the Puja weeks bring.

To the whole business portfolio. Meta sets one allowance at portfolio level and every line under it draws from the same pool, so a showroom number running hot can starve the accounts number. KaamGPT's per-line daily cap stops a festive promotion from using up the room a set of balance reminders needs that same day.

Meta prices every delivered template by two things: its category, marketing, utility or authentication, and the recipient's country prefix, with marketing the dearest of the three. KaamGPT deducts that price from wallet coins you buy in advance, displays the projected total before release and declines any campaign the balance would leave unfinished. Subscriptions begin at ₹0 and never bundle a monthly message quota.

Meta prices each template according to the international dialling code on the receiving number, so a UK number and an Indian one fall in different price regions even for the identical message. A Kumortuli studio writing to overseas committees should store those numbers with the right international prefix and expect the overseas slice of the estimate to differ from the local slice.

KaamGPT does, with no clerk involved. A customer who answers with STOP, unsubscribe, opt out or cancel loses their subscription that instant and is skipped by every later bulk run. Exclusions also travel across channels: email unsubscribes, do-not-contact flags in the CRM and requests made to KaamGPT's AI calling agent bar a person from WhatsApp campaigns as well.

Yes, provided those regulars agreed to hear about offers. Upload the old bill exports, let repeat phones merge, and release a marketing template whose image header pictures the counter, with the customer's name in {{1}} and a call button. When families write back about timings, whoever is on the inbox that morning replies in Bengali or English.

Meta expects that the person was plainly told they were agreeing to hear from your business, and that your business was named at that moment. You choose how: a printed line on the cash memo, an order form, a tick box online, or a slip signed at the counter. Record the source per contact; an extra column in the upload file does the job.

No, not at present. A Business API campaign in KaamGPT leaves only when a person clicks send, and the app has no option to queue it for a later hour. Kolkata teams usually ready everything the night before, verify the head-count and the coin estimate, then fire slice one at dawn, pausing and resuming through the day.

A single spreadsheet may carry twenty thousand lines. Bare ten-digit Indian mobiles pick up +91 during the upload, and repeated phones shrink to one recipient, which helps when khata exports from several years overlap. Type numbers abroad with their country prefix first, or the importer will treat them as Indian.

Yes. Restrict today's run to a portion of the audience, say rows 1–500, and release the next portion tomorrow. Each run feeds the gateway a hundred at a time, freezes on pause and restarts at the exact contact on resume, and gives a temporary error three more attempts before counting it as failed.

Open the report, read the failed list with its error reasons, correct whatever is fixable, a country prefix left off for instance, and launch a re-send aimed at that failed group alone. Buyers whose copy already arrived stay out, so nobody receives a duplicate and the wallet pays nothing extra for them.

Each campaign shows its recipients moving from waiting through sent, delivered, read and replied, or into failed, together with the commonest error causes. Every one of those piles downloads in Excel or CSV form, timed in IST, and an owner can pass the 'opened, never answered' buyers to the salesmen for calls the following morning.

No. Reports stop at delivered, read, replied and failed; there is no click tracking on website buttons. If you need to know which buyers acted, ask them to tap a quick-reply button such as 'Send the list' or 'Call me', because a reply is recorded and opens a conversation your team can continue.

Yes, through utility templates triggered by the developer API. A hospital or diagnostic system holding a scoped key can push an approved notice, for instance 'report ready' with the patient's name and collection time, and query whether it arrived, without anyone touching the campaign builder. Patients who answer appear in the shared inbox for the front desk to pick up.

The Free tier is ₹0 and carries the identical importer, slicing, reports and inbox found on paid tiers, limited to five seats and 512 MB. Messages are still bought with wallet coins at Meta's rates. Starter begins at ₹999 monthly after a 14-day trial; to talk through which tier fits, ring or WhatsApp +91 79767 82366.

Yes. Add a line per branch, mark one as default and set each its own daily ceiling. The Sending routes screen reports every line's condition and, where Meta discloses them, its quality grade and tier. Keep in mind that Meta's daily allowance belongs to the portfolio as a whole, so branch lines on one portfolio share it.

Yes. A utility template with the committee's name in {{1}}, the collection date in {{2}} and the balance in {{3}} can be sent to the whole order book, filled from contact fields. Committees that reply open a 24-hour window, and the manager can then answer questions about trucks or timings in Bengali as ordinary chat.

A broadcast list in the Business app only lands with people who stored your number, is assembled by hand on a single handset and reports nothing beyond ticks. The Business API reaches any consenting contact, takes twenty-thousand-row uploads, logs delivery and reading per person, and routes answers to an inbox shared by the whole counter.

For Cloud lines, a KaamGPT reviewer goes over the draft before Meta does, sometimes adjusting wording or category, and Meta then gives its decision. That decision normally lands by webhook; should one go missing, a six-hourly check against Meta and a manual Sync control both recover it. A refused draft shows Meta's reason and can be reworked and resubmitted, so build a margin before festive dates.

Confirm that sending happens only over Meta's Cloud API or an authorised provider, never a paired phone; that big files are imported and deduplicated; that refusals from every channel are honoured; that sends can be sliced while Meta's quality grade stays visible; and that each campaign is priced by category beforehand. Treat any promise of unlimited messages or guaranteed delivery as a warning.

Yes. Tag contacts by what they buy, then add a CRM condition that excludes anyone with no activity for, say, 90 days. The Friday stock template then reaches only active resellers in the matching tag, which keeps the number's quality rating healthy and spends wallet coins on people likely to order.