CRM with WhatsApp for B2B sales: what to ask for and five checked options

Transparency note. This guide is written by the GTM Flow team, and GTM Flow is one of the options listed. We have tried to be fair to all of them; prices are the public ones as of October 22, 2026. GTM Flow is in early access and you cannot buy it yet: we say so every time we mention it.

It is written for founders who sell themselves and sales teams of 1 to 10 who already use WhatsApp with prospects, typically selling into Europe, Latin America or other markets where business runs on WhatsApp, and who want to stop losing conversations on each rep's phone. It is not legal advice: when we discuss WhatsApp's policies we quote the text, with the version date, and suggest you review your case with counsel.

Most of what you find when you search for a WhatsApp CRM is built for customer support and B2C selling: lots of inbound messages, chatbots, quick replies and an inbox where several agents answer. In B2B sales the volume is lower and each conversation matters more, because a deal can run for months and involve several people at the same company.

• Confirming and preparing meetings with someone you have already spoken to by phone or email.
• Sending the proposal or answering a quick question without waiting for the prospect to open an email.
• Following up after a call, with the summary and the agreed next step.
• Reviving a stalled deal with someone who gave you their number and agreed to hear from you.

The problem a CRM with WhatsApp solves is team memory. If the conversation lives only on a phone, nobody else knows what was promised, and when that rep leaves the relationship goes with them. The same holds for every other channel, which we cover in B2B prospecting tools.

One platform rule shapes how you sell: the customer service window. According to Meta's documentation, when a user messages or calls you, a 24-hour window opens and resets with each new message from them. Inside that window you can reply with regular messages, no template needed; once it closes, you can only send pre-approved templates.

• Marketing templates: Meta says they let businesses reach a wide range of goals, from awareness to retargeting.
• Utility templates: typically triggered by a user action or request, and they cannot be promotional.
• Authentication templates: used to verify a user's identity, for example with a one-time passcode.

You pick a category when you create a template, but WhatsApp validates it against the content and, since July 2024, runs a recurring process that moves approved templates into the category they actually belong to, according to its template categorization guide. You do not have to choose between the app and the platform: Meta lets you connect the number you already use in the app to the API, which it calls coexistence. You can keep messaging one to one from the app, WhatsApp keeps the history in sync if you agree, and messages sent from the app stay free, per its coexistence documentation.

What changed on October 1, 2026, according to Meta's pricing documentation: service messages, free since November 2024, are now charged per message at the same rate as utility and authentication messages in each market, and utility messages sent in response to users inside an open window, free since July 2025, are charged too. Each business phone number gets 1,000 free service messages a month, which do not roll over, per the main pricing page.

For a small B2B team that replies to a handful of people a day, the 1,000 free service messages usually go a long way; the cost that adds up is marketing templates, which are always charged. On top of Meta's fees you pay for the CRM or the provider that connects you: Kommo says it does not charge for its WhatsApp integration, HubSpot caps template messages at 1,000 a month, and Pipedrive's help center notes that Meta bills each delivered message separately. The WhatsApp Business app is still free to download.

The WhatsApp Business Messaging Policy was last updated on September 23, 2026. These are the passages that matter for prospecting, quoted verbatim:

• What it covers: the WhatsApp Business App and the WhatsApp Business Platform; the platform also has its own terms, such as templates and the customer service window.
• When you may message: «You may only contact people on WhatsApp if: (a) they have given you their mobile phone number or username; and (b) you have received opt-in permission from the recipient confirming that they wish to receive subsequent messages».
• Who owns the opt-in: «You are solely responsible for determining the method of opt-in», and the policy adds that it must comply with the laws that apply to your communications.
• Opt-outs: «You must respect all requests (either on or off WhatsApp) by a person to block, discontinue, or otherwise opt out of communications from you via WhatsApp, including removing that person from your contacts list».
• Tone: «Do not confuse, deceive, defraud, mislead, spam, or surprise people with your communications».

The same policy notes that people can block or report a business, and that WhatsApp's systems limit how many messages a business can send if its quality stays low for an extended period. Its best-practice section recommends an opt-in that covers the different categories of messages you will send, a separate opt-in for calls, and clear instructions on how to opt out.

This is not legal advice. The policy points to the laws that apply to your communications; which laws those are, and how to document opt-in in your case, is a question for counsel.

• History on the record, not in a separate inbox. The conversation has to show up on the company and the deal, not only in a chat inbox nobody cross-checks with the pipeline.
• Every channel in one thread. If WhatsApp lives in one tool and cold email in another, the rep who picks up the account does not know what was said where.
• Several reps on one account. See, reassign and continue a conversation when someone is on vacation or leaves the team.
• Follow-up as tasks. A reply, or silence, should create the next step instead of relying on memory.
• Recorded opt-in. A field or a note with when and how the contact gave you their number and permission, and opt-outs honored on the spot.
• Clear costs. Whether the plan caps messages, whether it supports coexistence with the app, and who bills you for Meta's fees.
• Send caps. A daily limit per number so a sequence never turns into a broadcast.

If WhatsApp is your main customer support channel, a shared inbox and chatbots matter more. If it is one channel within your prospecting, history per deal and how it fits with email and LinkedIn matter more. Answer that question first and the shortlist gets much shorter.

How the inbox works with WhatsApp, LinkedIn and every other channel is on Converse, and the planned plans are on pricing.

1. Ask for opt-in at a natural moment. At the end of a call or in the demo form, ask whether you can follow up on WhatsApp, and note on the record when and how they said yes.
2. Use WhatsApp for what it is good at. Confirming a meeting, sending the proposal, answering a question or flagging a change. For a first touch with someone who does not know you, the usual channel is B2B cold email or LinkedIn.
3. Short messages with context. Remind them what you discussed and propose one next step. No three-minute voice notes, and no PDF catalogs out of the blue.
4. Honor opt-outs immediately. WhatsApp's policy requires you to respect any request to stop receiving messages, whether it arrives on WhatsApp or anywhere else.
5. Set a daily cap per number. People can block or report you, and WhatsApp limits sending for businesses whose quality stays low for long.
6. Watch your marketing templates. They are the ones Meta always charges for, and a template you submit as utility can be recategorized as marketing.
7. Log everything on the record. If the reply comes in on WhatsApp and the next step is a call, whoever makes it needs to see the whole conversation.

The underlying idea is the same as in the rest of prospecting: the channel holds up as long as people want your messages. A number that gets blocked or reported a lot loses sending capacity, and getting it back costs more than sending less would have.

• Your business comes in through WhatsApp and you need a shared inbox: Kommo or Clientify. Weigh Kommo's 6-month minimum against Clientify's monthly option.
• You are on HubSpot with Marketing Hub or Service Hub Professional: connect WhatsApp there, and keep the 1,000-template monthly cap in mind.
• You are on Pipedrive Growth or above: check whether you have access to the beta before paying for another tool.
• WhatsApp is one channel next to cold email, LinkedIn and calls: look for a CRM that keeps everything on the deal. GTM Flow is built for that, but today you get in by requesting early access.

Whatever you choose, two things stay the same: what Meta charges per message, which since October 1, 2026 includes service messages beyond the first 1,000 a month, and WhatsApp's rule to message only people who gave you their number and their permission. If you are comparing CRMs beyond WhatsApp, read our HubSpot alternatives next.