Subject: protonmail.com quota full: (98% full)
From: protonmail.com <firstname.lastname@example.org>
To: Thank you for sending me mail <email@example.com>
Date: Sunday, 9 August 2020 16:32
Size: 1.4 KB
Message from firstname.lastname@example.org.
Your mail box is almost full, this can stop keep incoming emails from arriving.
Use the link below to get more free space.
This message is auto-generated from email@example.com. security server, and replies sent to this email can not be delivered.
This email is meant for: firstname.lastname@example.org.