SMTP/e-mail: Improve UTF-8 handling#2047

swg-bsi wants to merge 1 commit intoeclipse-scout:releases/25.2eclipse-scout/scout.rt:releases/25.2from

swg-bsi:features/swg/25.2/mailhelper_asciiswg-bsi/scout.rt:features/swg/25.2/mailhelper_asciiCopy head branch name to clipboard