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Hubzilla Support Forumcc: @
Sheltered Side I searched this forum, development forum, wiki and documentation and could not find a recipe how to add a connection using e-mail only.
The goal is of course to reach people who are not interested in setting up any kind of account, but still they wish to participate via sort of a mailing list interface. It is also for personal email contacts, so I could get rid of some less secure mail channels.
I remember there was a procedure for that in Friendica and I am pretty sure I read at least a mention of it for Hubzilla. But now I just cannot find anything...