[IMP]mail_ux: Test email server connection from the UI#399

fw-bot-adhoc wants to merge 1 commit intoingadhoc:19.0ingadhoc/miscellaneous:19.0from

adhoc-dev:19.0-18.0-t-65953-jr-4957-fwadhoc-dev/miscellaneous:19.0-18.0-t-65953-jr-4957-fwCopy head branch name to clipboard