Hi. Just match the medium to the message, that’s it. This guide says https://www.growmeorganic.com/....call-vs-text-vs-emai :
Call: Sensitive issues, negotiations, or complex explanations.
Text: Quick updates (“Meeting at 2 PM?”) or time-sensitive alerts.
Email: Detailed info, contracts, or non-urgent asks.
I text my regular clients but email new leads—avoids coming off too casual. Pro tip: Ask their preference upfront!