Free Mystery Pair ❓

Preview text: Memorial Day Sale is live

Hollow Socks

Thursday, May 21, 2026 at 5:01 PM EasternKlaviyo

Hollow SocksFree Mystery Pair ❓

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Subject: Free Mystery Pair ❓
Preview text: Memorial Day Sale is live
From: support@hollowsocks.com
Brand: Hollow Socks
ESP: Klaviyo
Sent: Thu May 21, 2026, 5:01 PM ET
Sent to: hollowsocks.com
Size: 61 KB
Images: 15
Links: 14
Subject length: 19 characters

Against Hollow Socks's usual

Sent in its busiest hour, 5 PM, which holds 22% of its emails. The subject is 19 characters; its average is 28.

Email headers

What the brand's servers put on this email. Our receiving servers, the address we subscribed with and unsubscribe links are left out.

From: Hollow Socks <[email protected]>
Subject: Free Mystery Pair ❓
Date: Thu, 21 May 2026 21:01:08 +0000
Message-ID domain: klaviyomail.com
Return-Path domain: k3.send.hollowsocks.com
DKIM signature: d=shared.klaviyomail.com s=def1; d=send.hollowsocks.com s=mtd1
List-Unsubscribe: Present, one-click

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from kl-203-16-2.kmta.shared.klaviyomail.com [170.203.16.2] by our receiving server with ESMTPS
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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Sent just before and after

	May 23, 2026 1:00 PM	🧦 3 Free Pairs. (Yeah, really.)
	May 22, 2026 7:00 PM	Best Sale in Hollow History.
	May 22, 2026 1:03 PM	🇺🇸 Memorial Day sale starts now
	May 21, 2026 5:01 PM	Free Mystery Pair ❓ (this email)
	May 20, 2026 5:00 PM	FLASH SALE ENDS TONIGHT 🧦
	May 19, 2026 5:01 PM	Compression Ankle Flash Sale 🧦
	May 18, 2026 5:03 PM	Chilly mornings to hot afternoons ☀️

Free Mystery Pair ❓

Against Hollow Socks's usual

Servers it passed through, newest first

Sent just before and after

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