Subject: A body line starting with From (SAMPLE)
From: Maya Chen <[email-masked]>
To: Sam Rivera <[email-masked]>
Date: Sat, 07 Feb 2026 09:20:00 -0800

Sam,

The two lines below are what break naive mailbox splitters and SMTP clients:
From here on the quoted price is fixed until 30 Jun 2026.
.
That lone dot is the SMTP end-of-data marker in its raw form.

Maya