Deeper sleep, in their words*
Most people don't get enough of it
Eight Sleep <[email protected]>
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Eight Sleep promotes a cooler bed for deeper sleep, citing the importance of a lowered body temperature to reach deep sleep. The company offers a risk-free 30-night trial, free shipping and returns, and a 5-year warranty on select products. Discounts apply automatically at checkout for this email-exclusive offer.
What the raw message shows
From the headers
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Klaviyo See it in the headers
In the HTML
- Built with
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Across Eight Sleep's email
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- About 6 a week
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Enforced, reject
Mail failing authentication is refused.
The copy
59 words · under a minute to read
How a cooler bed gets you there
Sleeping longer and more deep sleep
Your body has to cool down to reach deep sleep. The Pod lowers the temperature ofthe bed so you can get there, and can hold itall night while your body does the rest.
Try risk-free for 30 nights | Free shipping & returns | 5-year warranty**
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
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o376.k.eightsleep.com
· 192.254.113.62
Klaviyo's sending servers
- SPF
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- DKIM
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- Pass signed by k.eightsleep.com
- DMARC
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Pass for eightsleep.com
Policy: reject
- Unsubscribe
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One-click
Meets the Gmail and Yahoo rule for bulk senders.
- Complaints
- No feedback-loop header
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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
- from o376.k.eightsleep.com (192.254.113.62) by [receiver] (cloudflare) id YuTy3IcjQMEh for <[recipient]>; Tue, 15 Sep 2026 15:05:46 +0000
- Received
- by recvd-7d6b7d77f9-fphvk with SMTP id recvd-7d6b7d77f9-fphvk-1-6AA95ECA-6 2026-09-15 15:05:46.003650401 +0000 UTC m=+4219894.971386936
- Received
- from NTg2NDQxMQ (unknown) by geopod-ismtpd-99 (SG) with HTTP id MZ69-mQ3RSmHWY6bipe6Jg Tue, 15 Sep 2026 15:05:45.968 +0000 (UTC)
Authentication
- Received-SPF Authentication result
- pass ([receiver]: domain of [recipient]@send.k.eightsleep.com designates 192.254.113.62 as permitted sender) receiver=[receiver]; client-ip=192.254.113.62; envelope-from="[recipient]@send.k.eightsleep.com"; helo=o376.k.eightsleep.com;
- Authentication-Results Authentication result
- [receiver]; dkim=pass header.d=k.eightsleep.com header.s=s1 header.b=0xmZXNzl; dmarc=pass header.from=eightsleep.com policy.dmarc=reject; spf=none ([receiver]: no SPF records found for [email protected]) smtp.helo=o376.k.eightsleep.com; spf=pass ([receiver]: domain of [recipient]@send.k.eightsleep.com designates 192.254.113.62 as permitted sender) smtp.mailfrom=[recipient]@send.k.eightsleep.com; arc=none smtp.remote-ip=192.254.113.62
Platform
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- QtJCHb
- X-Kmail-Message
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- X-Kmail-Ops
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- u001.aq2Nlhw2Zbv3VvpTkixq5wFQvpq+ptqMKDcEwPY+hA/kwbsBPVhtgdNqQlsFOeqH9Ujk50IFtAuaHVxCqCiTbTSaYyfblbiTg0R0rI4POfY+AYhyKd8nJPpPtGUYOhOlpU++ieGOh4vupjrvG9jkXjs03xxXyb5YiXzBbDoeTnDmD7NLmLu2wvWGKGXm+IcADYG3hVI/ryMZnnvOpDft/6erIGO/IgPCnTCUGDW96tvv90FbXn3yIazD+C5D6ELU
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Message
- Content-Type
- multipart/alternative; boundary=236e7ab7dc9dff551fd460ffd75fe808b44f5e9c03b3ba15942d863a0787
- Date
- Tue, 15 Sep 2026 15:05:46 +0000 (UTC)
- From
- Eight Sleep <[email protected]>
- Mime-Version
- 1.0
- Message-ID
- <MZ69-mQ3RSmHWY6bipe6Jg@geopod-ismtpd-99>
- Subject
- Deeper sleep, in their words*
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