A follow-up is the message that continues a business conversation. In B2B sales, deals rarely close in the first meeting: they are born in the second or third contact. That is exactly where most connections die, not for lack of interest, but because nobody wrote first.
Timing matters. On the same day or the next, the conversation is still fresh on both sides and the message reads as a natural continuation. After a week it is still worth writing: just acknowledge the time in one line and move on to the point, without a paragraph of apologies.
The channel changes the format. On WhatsApp the message is short, in two-line paragraphs, and fits on the screen without scrolling. On LinkedIn you can add a little more context, ideally picking up something from the profile or the conversation. Email is the channel for proposals: a specific subject, a paragraph of context, the request and your signature.
If there is no reply, a second message about a week later is polite, not pushy. It should be shorter than the first and bring something new, such as useful information or an easier question, instead of just asking whether the person saw your last message.
Anyone who joins business rounds on the platform can write the message straight from My Connections, with the meeting details already filled in. To go deeper, read how to follow up.