A comment was flagged for moderator attention automatically, as it contained an email address.
Can we have a moderator only “flag for community team/developer attention” link on posts?:
Someone posting their email address in a post seeking a reply probably isn't sensitive; presumably they intended to do that, so just edit it out & tell them to not be selfish.
I deleted the comment, as well as the reply, as it became a non sequitur.
The substantive answer to your question is that we generally don't recommend posting your personal information here, and soliciting business is governed by How not to be a spammer.
There's at least one other discussion about potentially sensitive information.
However, if the discussion just needs to be, well, a discussion, you can use chat. There's no real accommodation for discussions that need to be private, though, as your linked question states.