Four to six touches over three to four weeks is the shape that works for most B2B tech, and the number matters far less than the rule governing it: every touch has to add something new. A sequence that repeats itself is not persistence, it is noise with a schedule.
Why one touch fails
A single message has to arrive on the day somebody has the problem, the budget and ten free minutes. Most do not, and the silence that follows says nothing about whether you were relevant. It says you arrived on a Tuesday.
The majority of replies to a well-built sequence arrive after the first message. Teams that stop at one are not testing their message, they are testing their timing.
Each touch adds one thing
Touch one is the problem in their words and a specific ask. Touch two is a different channel and a reason to believe, usually a comparable situation rather than a case study link. Touch three adds one piece of substance they can use whether or not they reply. Touch four offers a smaller commitment than the first ask.
What is not allowed is "just following up" and "bumping this to the top of your inbox". Those add nothing, and they tell the reader the sender has run out of reasons to be in touch, which is information they will act on.
The close that is not a close
The last touch should make it easy to say no. A line that says the diary closes on Friday and the week after is just as good converts better than a final chase, because it removes the pressure that was stopping a reply.
It also turns a dead lead into a dated one. "Not now, ask me in Q3" is a result. An unanswered sequence is not.
When to stop
Stop at six, and put the contact on a long cycle rather than deleting them. Markets move, people change roles, and the company that was wrong in March is sometimes right in November.
Continuing past six does not produce meetings. It produces the reputation that makes the November message fail too.