I find the generated channel email long and not easy to use or communicate to external people ;
Will an alias feature be (someday implemented?
Many thanks for your kind answers,
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No, currently not. There is an uservoice requesting this but no update for a while and only a few votes. So vote for that and comment.
As a workaround you can create a contact from Office 365 Admin Center, that will create a contact in your tenant that forwards emails to that long strange channel address.