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speak_plainlytoday at 3:59 PM2 repliesview on HN

Probably Handoff and cross-device application state syncing.


Replies

artisinaltoday at 4:31 PM

Most likely answer so far. While writing an email you can take it over between iPhone, iPad and Mac. Once you hit send it probably gives a “you can stop Handoff now” signal.

lapcattoday at 4:48 PM

I've disabled Handoff.

Also, why would Handoff be triggered by sending an email rather than composing an email? Mail app uses IMAP for syncing mailboxes.