Outlook web: verify a resolved recipient chip before sending

In Outlook on the web, a typed address can resolve to a directory display name that looks unrelated to it (a shared mailbox can show an internal group name). Before clicking Send, hover the chip to open the contact card and confirm the actual SMTP address; this avoids both misdirected mail and false alarms. With several accounts signed in, also confirm which mailbox the page opened: the default can be the wrong tenant, and switching can land on a sign-in page the agent cannot complete, so hand that step to the user. After sending, check Sent Items rather than assuming the click worked.