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Mon, Aug 31 · 2:00am ET Product Showcase

Sent with Klaviyo Sends about 3 a week All facts

Manta Sleep showcases its lineup of sleep solutions, including sleep masks, earplugs, and a white noise machine. The brand tackles various sleep challenges with its range of products. Manta Sleep expresses gratitude for customer support.

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 39 emails from Manta Sleep

The copy

55 words · under a minute to read

Manta Sleep logo

Shop your Manta

The Manta lineup tackles all your sleep challenges

Manta PRO Sleep Mask

Manta SOUND Sleep Mask

Manta ORIGINAL Mask

Manta COOL Eye Cups

Manta White Noise Machine

Manta AROMA Dots

Manta Travel Pillow

Manta Sleep Earplugs

Manta Arctic Bedsheet Set

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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

o1407.shared.klaviyomail.com · 149.72.90.89

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 o1407.shared.klaviyomail.com (149.72.90.89) by [receiver] (cloudflare) id dQlNtGDBAJfu for <[recipient]>; Mon, 31 Aug 2026 06:00:10 +0000
Received: by recvd-7d6b7d77f9-pfc7w with SMTP id recvd-7d6b7d77f9-pfc7w-1-6A95186A-A 2026-08-31 06:00:10.040397266 +0000 UTC m=+2891180.360403334
Received: from NTg5NTg1NQ (unknown) by geopod-ismtpd-28 (SG) with HTTP id UsVX3TdPSHmUUQ6-rDSOHA Mon, 31 Aug 2026 06:00:09.998 +0000 (UTC)

Authentication

Received-SPF Authentication result: pass ([receiver]: domain of [recipient]@klaviyo.mantasleep.com designates 149.72.90.89 as permitted sender) receiver=[receiver]; client-ip=149.72.90.89; envelope-from="[recipient]@klaviyo.mantasleep.com"; helo=o1407.shared.klaviyomail.com;
Authentication-Results Authentication result: [receiver]; dkim=pass header.d=mantasleep.com header.s=kl2 header.b=tZX5HFnT; dmarc=pass header.from=mantasleep.com policy.dmarc=none; spf=none ([receiver]: no SPF records found for [email protected]) smtp.helo=o1407.shared.klaviyomail.com; spf=pass ([receiver]: domain of [recipient]@klaviyo.mantasleep.com designates 149.72.90.89 as permitted sender) smtp.mailfrom=[recipient]@klaviyo.mantasleep.com; arc=none smtp.remote-ip=149.72.90.89

Platform

X-Kmail-Account: KYgPD8
X-Kmail-Message: 01M0Z3MM5MRW0772SV56664S4J
X-Kmail-Ops: 01KXF2R3JSH9777JVSMDCCMC6Q
X-SG-EID: u001.xeEgffpsmHA1gha/vIlCfnFDCPUYhzR8uskr3qDb2pX8KCnJWbdA3jE6/xdLuuEdy2P4DBV8umCY0uyExloeEeRt05YQDC7EMPDKszQaPJ7Lr8tMyimfxqOL6Wz+ubcC+rUj4gOUPEFau16I5HHCbC53Ta3MpXb2El8nlEjvJbqvioi1Ii1nnTU6Cz3wn6UdbFz7ff/kWuwm8kaEe/AXon353E1/I9dWsQLUsoXWLvYXPvhxkd3DHzEeYBbiOWHa
X-SG-ID: u001.SdBcvi+Evd/bQef8eZF3BiU3Zi1S53GtqGa3TWBmqe75yn5aYrkvkfG+ZGKrHRvq5L1Pw6pZ2fI18+Jq/t9AxY8t7YCTCy7IOdSMatKI1SDTgCpbep8m09siQKtADlG8rYv0vhmfvDnCVvmE+2XxkzDKx5QzZWiQn1ehT3baLQZndVG12Y11CM866NVcNq2A3NM9bqpGG4A3oTpdjfQSi2W6uWFBDge1igMmLUIi7e/BQL7wErqFXSlWN5lMC3UXuo/aIAbkNTui64lM5I63GEVSMmvcSPKheSblZz2aGjv5FPT7pubhR0MD8Mur69+GrkgFpoCEGWeCcgIWTOvBhUSHMKZf42mJg4OYaa0nNvENLXjvRylwJhWAVzEnujAX
X-Entity-ID: u001.hfPXRH9Vf9JkJDdd7ZPpgQ==

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Message

Content-Type: multipart/alternative; boundary=954fbe831d0eb2a4c144b076f0da33a9eb87a1d637d11ecb448307d257fd
Date: Mon, 31 Aug 2026 06:00:10 +0000 (UTC)
From: Manta Sleep <[email protected]>
Mime-Version: 1.0
Message-ID: <UsVX3TdPSHmUUQ6-rDSOHA@geopod-ismtpd-28>
Subject: What’s your problem?

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