Opt-in

No. When a customer messages you, a 24-hour window opens in which you may reply freely. Opt-in is for messages you start: templates sent outside that window.

An affirmative action by the person, naming your business and WhatsApp as the channel: a ticked box, a keyword reply, a QR scan and confirmation, a missed call to a published number, or a yes on a call, with a record of who, when and how.

Not for one-to-one follow-ups: a dialer can open WhatsApp on your own number with the message prepared after each call. You need the official API for fully hands-free sending, bulk campaigns to hundreds of numbers with delivered and read reports, and message templates. RMDialer works both ways and connects to the API from Meta or any provider.

Since 1 July 2025 Meta charges per template message, at a rate set by the message category and the country (marketing costs the most; replies and utility templates inside an open customer service window are free). Providers add a platform fee. RMDialer does not charge extra to connect an API you already have; you pay Meta or your provider directly for messages.

Your phone app, with the numbers you call already organised: the call log with filters, missed calls in their own list to return, contacts, caller ID and spam screening, and call analytics that count your day by outcome and by person. Sending WhatsApp from any call is free every day too, with a free account: 15 sends a day for the first 15 days, then 3 a day. Saving a status, a remark or a follow-up against a call is the paid part.

Use a dialer with auto WhatsApp: set a message once per call type (missed, incoming, outgoing) and per lead status, and the app sends it the moment the call ends, personalised with the customer's name. From the user's own number it opens WhatsApp with the message ready; through the WhatsApp Business API it sends with zero taps.

Send to people who know you and have opted in, personalise with the name, keep to a few hundred a day from a normal number with gaps between messages, and stop sending to anyone who does not reply or asks you to stop. For larger volumes use the official WhatsApp Business API with approved templates, which cannot be banned for volume and gives delivery reports.

A WhatsApp CRM keeps customer chats next to the customer record, so a conversation, its call history, lead status and follow-ups are one file instead of a chat on someone's phone. Built into a dialer, it lets a team reply from the same app they call from, send media and templates, see read receipts, and keep the chat when the employee leaves.

Yes, one message at a time from your phone: the app prepares each message with the name filled in and hands it to WhatsApp, and you tap send. It is safe for lists of a few hundred known contacts. For thousands of numbers, or for reports of delivered, read and replied, the WhatsApp Business API route is the right one.

An auto dialer app calls a list of phone numbers one after another so the caller never types a number. On Android, an app like RMDialer runs the session on the phone itself using the SIM already in it: you pick a list from Excel, a Google Sheet, an API or assigned leads, press start, and the app dials each number in turn while you mark the outcome between calls.

A telecalling CRM is customer software built around phone calls: the lead list, the dialer, the call outcome and the follow-up live in one place. The mobile kind, such as RMDialer, replaces the Android phone app on each rep's handset so every call automatically becomes a record with a status, a remark and the next follow-up, and the manager sees the whole team on a web dashboard.

Telecalling software is built to make and track calls (dialing lists, call logs, per-caller reports). A CRM is built to hold customer records and pipeline stages. Most Indian sales teams need both at once, which is why a telecalling CRM combines them: the call itself creates and updates the customer record, so nobody types into a separate system after the call.

A CRM dialer is a single app where the dialer and the customer record are the same thing: the call screen shows the lead, and ending the call updates it. It differs from a CRM with "dialer integration", which is two products joined by a sync. RMDialer is a CRM dialer for Android that runs on the user's own SIM.

A business dialer app replaces the default phone app on an Android phone with one made for selling: caller ID from your own leads, the last remark on screen when a customer rings, two-tap status and follow-up after each call, automatic WhatsApp, and a call log that filters by lead status. It is a personal CRM for one owner and a team system when several people use it.

The dialer is free forever. Install it, make it your phone app and you keep the keypad, contacts, call log, caller ID, spam screening and your call analytics with no account, no payment and no expiry date. Free WhatsApp sends are included every day once you make a free account. What you pay for is the memory around the call: the lead status, the remark and the follow-up reminder saved against every number, plus list auto dialing, team reports, backup and WhatsApp automation.