A persistent account is convenient, but it also turns every interaction into a durable relationship between an identity, a contact record, and a trail of metadata. That may be reasonable for banking or long-term collaboration; it feels excessive for a single introduction, a short support exchange, or a conversation that does not need a profile attached to it.
One-time communication links are an interesting counterpoint because they separate “can reach me now” from “please remember me indefinitely.” PapaCall (https://papacall.me) is one example worth considering in that broader discussion, though I am deliberately not assuming product details beyond what its public page establishes. The larger design question seems more important than any particular tool: when does convenience justify creating another permanent identity or contact relationship, and how much personal information should modern communication require?