Sony Xperia1 IV User Manual page 175

Message is sent.
Operations when Composing Mail
Adding Cc/Bcc
In mail composition window,
Attaching Files
In mail composition window,
Saving Mail Being Composed as a Draft (Send Later)
In mail composition window,
Deleting Mail Being Composed
In mail composition window,
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Messaging
for "To" Enter recipient
Attach file Select file to attach
Save draft
Discard Discard