September has a sleep problem

And it has a name

Mon, Sep 14 · 8:02am ET Product Showcase

Sent with Klaviyo Sends about 3 a week All facts

Manta Sleep promotes its sleep products, including the ORIGINAL Mask, PRO Mask, and STEAM Eye Cups. The brand encourages customers to get their sleep on track. Manta Sleep showcases its products as a solution to sleep problems.

What the raw message shows

From the headers

Sent with: Klaviyo See it in the headers

Across Manta Sleep's email

Sends: About 3 a week
DMARC: Not enforced
Failures are monitored but still delivered.

Manta Sleep mantasleep.com

Whatever stops you sleeping, its days are numbered. Join 2+ million people taking control of their sleep with Manta masks and accessories.

All 48 emails from Manta Sleep

The copy

34 words · under a minute to read

Manta Sleep logo

Let's get it right

Get your sleep on track

Shop Manta ORIGINAL Mask

Shop Manta PRO Mask

Shop Manta STEAM Eye Cups

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The words as text: what a screen reader can follow, and all there is when images don't load.

What the headers say

Read from the message's own headers, as it arrived.

Came from

o1377.shared.klaviyomail.com · 149.72.217.41

Klaviyo's sending servers

SPF

Pass for klaviyo.mantasleep.com

DKIM

Pass signed by mantasleep.com

DMARC

Pass for mantasleep.com

Policy: none, so failures would still be delivered

Unsubscribe

One-click

Meets the Gmail and Yahoo rule for bulk senders.

Complaints

No feedback-loop header

Show all 20 headers

As received, minus the delivery side: the archive's own addresses show as [recipient], its mail servers as [receiver], signatures are left out and unsubscribe links trimmed to their host.

Route

Received Identifies Klaviyo: from o1377.shared.klaviyomail.com (149.72.217.41) by [receiver] (cloudflare) id pXphxWrT5lYi for <[recipient]>; Mon, 14 Sep 2026 12:02:56 +0000
Received: by recvd-5bfcddc674-nfzbw with SMTP id recvd-5bfcddc674-nfzbw-1-6AA7E270-E3 2026-09-14 12:02:56.41497302 +0000 UTC m=+4122729.391767212
Received: from NTg5NTg1NQ (unknown) by geopod-ismtpd-20 (SG) with HTTP id xUZdzv3dTWSK5y7IOTgGaw Mon, 14 Sep 2026 12:02:56.404 +0000 (UTC)

Authentication

Received-SPF Authentication result: pass ([receiver]: domain of [recipient]@klaviyo.mantasleep.com designates 149.72.217.41 as permitted sender) receiver=[receiver]; client-ip=149.72.217.41; envelope-from="[recipient]@klaviyo.mantasleep.com"; helo=o1377.shared.klaviyomail.com;
Authentication-Results Authentication result: [receiver]; dkim=pass header.d=mantasleep.com header.s=kl2 header.b=cot2De3K; dmarc=pass header.from=mantasleep.com policy.dmarc=none; spf=none ([receiver]: no SPF records found for [email protected]) smtp.helo=o1377.shared.klaviyomail.com; spf=pass ([receiver]: domain of [recipient]@klaviyo.mantasleep.com designates 149.72.217.41 as permitted sender) smtp.mailfrom=[recipient]@klaviyo.mantasleep.com; arc=none smtp.remote-ip=149.72.217.41

Platform

X-Kmail-Account: KYgPD8
X-Kmail-Message: 01M1Y2KSQHR03421AZ8S4DJFQV
X-Kmail-Ops: 01KXF2R3JSH9777JVSMDCCMC6Q
X-SG-EID: u001.xeEgffpsmHA1gha/vIlCfnFDCPUYhzR8uskr3qDb2pX8KCnJWbdA3jE6/xdLuuEdy2P4DBV8umCY0uyExloeEbb/Q5Yr+S2mWDd0yybTgxa6BOUqqITiB5zX6R+4LDSylto131EDYtclk607eyRLkWJ1QeYboOtm0K1tCf/obOGwu5dUtk5XnHQ7HQAXxqRvTEhCkwsZvr9LOowW164OuvkTq3C+lqMK2gT7fG/BBHfMvYNmEIL1l8HGHNNb50b3
X-SG-ID: u001.SdBcvi+Evd/bQef8eZF3BiU3Zi1S53GtqGa3TWBmqe75yn5aYrkvkfG+ZGKrHRvq5L1Pw6pZ2fI18+Jq/t9AxY8t7YCTCy7IOdSMatKI1SDTgCpbep8m09siQKtADlG8rYv0vhmfvDnCVvmE+2Xxk/m/Pfq3PkMsQ+Ru/UigmRn3cJCP6iRhUmGUVB47bxfOVrbwE87qnYGBVYastjjLFffqQzBJ09dDbIskojpiDhrUaaV7Drrwb6BZzMq5tBIOFKt6XTaXu6RMAPrzjvJHkQXxv6M/HpS0OzIZH8BkdCCyVtGXMedE9VCOaJsJGVDxewIOEWyJ0IBcGJOKQyArJY5ajCj2fr3NakIhoSELg80fUDgBcwo0kOKyl+VtZgCw
X-Entity-ID: u001.hfPXRH9Vf9JkJDdd7ZPpgQ==

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Message

Content-Type: multipart/alternative; boundary=26442fadb645d5defa0e90b891b3218782ca0bf786a97f947612c4c70d6c
Date: Mon, 14 Sep 2026 12:02:56 +0000 (UTC)
From: Manta Sleep <[email protected]>
Mime-Version: 1.0
Message-ID: <xUZdzv3dTWSK5y7IOTgGaw@geopod-ismtpd-20>
Subject: September has a sleep problem

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