Warming up
WhatsApp is a step type in the same sequence as your email and LinkedIn steps, with replies in the same inbox. It works best as a warm follow-up — and this page is honest about why.
A WhatsApp message sits on the same timeline as your emails and LinkedIn steps, with its own wait before and after. The usual shape is an email that got a reply, a WhatsApp follow-up a few days later to move things along, and an email to confirm whatever was agreed.
WhatsApp replies arrive in the same queue as everything else, attributed to the same campaign and the same contact. The point of running the channel here rather than on a phone is that the conversation history stays in one place and someone other than you can pick it up.
WhatsApp is somebody's personal messaging app. A cold pitch there is intrusive in a way a cold email is not, and recipients react accordingly — with blocks and reports rather than a polite decline. It earns its place as a second or third touch to a contact who has already engaged, and it is genuinely strong there.
WhatsApp has extraordinary open rates, which is exactly why it is so easy to misuse. This page describes what the channel does in Warmerly and — more usefully — where it is worth using and where it will cost you more than it returns.
Almost every WhatsApp message gets opened, and that figure is quoted constantly in outreach marketing. It is real and it is close to meaningless on its own, because it describes the medium rather than your message. People open WhatsApp messages the way they answer a knock at the door — the opening is not consent, it is reflex.
What matters is what happens next. A message from a stranger pitching software in a channel populated by family and friends gets a substantially worse reaction than the same pitch by email, because the recipient experiences it as an intrusion into personal space rather than as one more item in a work queue. The available responses are also harsher: blocking and reporting, rather than deleting.
The pattern connecting all four is prior contact or explicit invitation. That is the line worth holding, and it is where the channel's high open rate converts into something useful rather than into complaints.
Under GDPR and PECR, messaging a personal mobile number for marketing generally requires consent, and the legitimate-interest argument that carries a B2B email to a work address is considerably weaker for a personal messaging app. Treat WhatsApp as an opt-in channel and you avoid the entire question.
Cold first touch at volume. It will produce blocks and reports, it damages the number you send from, and in most Western B2B markets it damages the brand attached to it. The people most likely to complain are also the people most likely to tell someone else they complained.
It is also a poor channel for anything that needs a document, a link with context, or a considered reply. Email exists for that, and a prospect who wants to forward your message to a colleague can do it in one action from their inbox and not at all from a chat thread.
Shorter than LinkedIn, which is already shorter than email. One or two sentences. No greeting block, no signature, no formatting. The message should look like something a person typed on a phone, because that is what everything around it looks like, and a formatted marketing message in a chat thread announces itself instantly.
Reference the previous contact explicitly. 'Following up on my email about X' does two jobs: it establishes that this is not a cold approach, and it gives the recipient the context to answer without scrolling anywhere.
WhatsApp numbers connect on their own tab in Accounts, next to your mailboxes and LinkedIn accounts, and behave the same way from a campaign's point of view — a sender that a step can be assigned to, with its own connection state.
Keep it separate from a personal number. A number used for outreach accumulates whatever reputation the outreach earns it, and blending that with the number your family uses is a decision that is hard to reverse.
Technically the channel is there. Practically it is a bad idea in most Western B2B markets: the complaint response is blocking and reporting, and it damages both the number and the brand. Use it as a follow-up to contacts who have already engaged.
Yes, in the same queue as email and LinkedIn replies, attributed to the same contact and campaign.
It depends on your basis for processing, and the bar is higher than for B2B email. Messaging a personal mobile for marketing generally needs consent under PECR, and the legitimate-interest argument is weaker here. Treating it as opt-in avoids the question entirely.
No. Use a separate business number. Outreach reputation attaches to the number, and mixing it with a personal one is not easily undone.
Speed-sensitive follow-ups with people who already know you, meeting logistics, and markets where WhatsApp is the normal business channel. For a cold first touch, email is better on almost every axis that matters.
WhatsApp as a step in the sequence, with replies in the same inbox — used where it works rather than everywhere.