I personally feel it is better that way, as the header "`From:`" is technically a "personalization"

I personally feel it is better that way, as the header "From:" is technically a "personalization" just like other headers such as e.g. "To:", "Subject:", and so forth.

I'm actually starting to wonder if the outer from:/mailfrom: are technically synonyms of each other, e.g. both being the mailfrom:, as that would somehow make better sense.

Interesting fact is also no matter if it is from:/mailfrom: in the outer area, or the from: under personalizations:, they all seem to indicate the optional friendly
name:
string, which the actual SMTP MAIL FROM (mailfrom:) / Envelope From / Bounce address doesn't have.

That friendly
name:
only makes sense for the bcc:/cc:/from:/reply_to:/to: within personalizations:, if you ask me.

And with bcc:, it depends quite much on how their system is handling the bcc: though.
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