πŸ” 3 clues. 1 player. Can you guess who's in the box?

Preview text: Club, country, position. The rest you discover at the reveal.

MystershirtMonday, Sep 28, 2026 at 5:55 AM EasternKlaviyo
MystershirtπŸ” 3 clues. 1 player. Can you guess who's in the box?
Subject
πŸ” 3 clues. 1 player. Can you guess who's in the box?
Preview text
Club, country, position. The rest you discover at the reveal.
From
hello@mystershirt.com
Sent
Mon Sep 28, 2026, 5:55 AM ET
Sent to
Belgium (mystershirt.be), mystershirt.com, Poland (mystershirt.pl)
Size
30 KB
Images
6
Links
6, 1 of them buttons
Subject length
52 characters

Against Mystershirt's usual

Sent in the 5 AM hour, which holds 12% of its emails; 14% arrive in the 4 AM hour. The subject is 52 characters; its average is 43.

Email headers

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From
Mystershirt <[email protected]>
Subject
πŸ” 3 clues. 1 player. Can you guess who's in the box?
Date
Mon, 28 Sep 2026 09:55:50 +0000
Message-ID domain
klaviyomail.com
Return-Path domain
k3.hello.mystershirt.com
DKIM signature
d=shared.klaviyomail.com s=def1; d=hello.mystershirt.com s=mtd1
List-Unsubscribe
Present, one-click

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  1. from (unnamed) by kmta-mta-blue-….servers.clovesoftware.com with SMTP

Other sending headers (names only): X-Mailer-Info-Extra2, X-Mailer-Info, X-Mailer-Info-Extra, X-Kmail-Account, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse

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