Not sure yet? You get 30 nights to find out*
Sleep on it before you fully commit
Eight Sleep <[email protected]>
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Eight Sleep promotes a risk-free 30-night trial with free shipping and returns, along with a 5-year warranty. The offer is exclusive to email subscribers and applies to select products. Discounts are automatically applied at checkout, with financing options available through Affirm.
What the raw message shows
From the headers
- Sent with
-
Klaviyo See it in the headers
In the HTML
- Built with
- Dark-mode styles
Across Eight Sleep's email
- Sends
- About 6 a week
- DMARC
-
Enforced, reject
Mail failing authentication is refused.
The copy
24 words · under a minute to read
30 nights to find out
No risk, until you've tried it
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
-
o377.k.eightsleep.com
· 168.245.98.160
Klaviyo's sending servers
- SPF
- Pass for send.k.eightsleep.com
- DKIM
-
- Pass signed by k.eightsleep.com
- DMARC
-
Pass for eightsleep.com
Policy: reject
- Unsubscribe
-
One-click
Meets the Gmail and Yahoo rule for bulk senders.
- Complaints
- No feedback-loop header
Show all 20 headers Hide the 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
- from o377.k.eightsleep.com (168.245.98.160) by [receiver] (cloudflare) id LQTLnOUjUPck for <[recipient]>; Mon, 21 Sep 2026 15:00:49 +0000
- Received
- by recvd-74bcff67d9-kmbsz with SMTP id recvd-74bcff67d9-kmbsz-1-6AB146A1-13 2026-09-21 15:00:49.038866029 +0000 UTC m=+861735.787918153
- Received
- from NTg2NDQxMQ (unknown) by geopod-ismtpd-7 (SG) with HTTP id 6iOB13gEQDiqyH3mHhr3xQ Mon, 21 Sep 2026 15:00:49.035 +0000 (UTC)
Authentication
- Received-SPF Authentication result
- pass ([receiver]: domain of [recipient]@send.k.eightsleep.com designates 168.245.98.160 as permitted sender) receiver=[receiver]; client-ip=168.245.98.160; envelope-from="[recipient]@send.k.eightsleep.com"; helo=o377.k.eightsleep.com;
- Authentication-Results Authentication result
- [receiver]; dkim=pass header.d=k.eightsleep.com header.s=s1 header.b=YAnVK8Jt; dmarc=pass header.from=eightsleep.com policy.dmarc=reject; spf=none ([receiver]: no SPF records found for [email protected]) smtp.helo=o377.k.eightsleep.com; spf=pass ([receiver]: domain of [recipient]@send.k.eightsleep.com designates 168.245.98.160 as permitted sender) smtp.mailfrom=[recipient]@send.k.eightsleep.com; arc=none smtp.remote-ip=168.245.98.160
Platform
- X-Kmail-Account
- QtJCHb
- X-Kmail-Message
- 01M1QMJW5HSX01A5QNSHJ0Q7ZH
- X-Kmail-Ops
- 01KX3E8K3PGKM7R311RDDHG1NK
- X-SG-EID
- u001.aq2Nlhw2Zbv3VvpTkixq5wFQvpq+ptqMKDcEwPY+hA/kwbsBPVhtgdNqQlsFOeqH9Ujk50IFtAuaHVxCqCiTbeNwaxAy5aHZ0pHYUZDZg8wWfvKpmF/b0iymn4PvQobQ88v7Q0dO3j0bhUzSysJk6xE4npqnzSgKzzuvP6BbQq4Ihdj/m6r4jxrlwsfU2bn5L6rL7L83qdUHxRNxYo0ecXJkXZ7B0VyVA0oKSWn4I9DP2gN7JdJ5WppDa8EYFPL4
- X-SG-ID
- u001.SdBcvi+Evd/bQef8eZF3BiU3Zi1S53GtqGa3TWBmqe75yn5aYrkvkfG+ZGKrHRvqmPGQRlY/SmPVInpaX4NAnNst/Hs4x9Um8+M3U4rmhPpC4UsIpC7SCII3wHuzZj7ztU5q+64tE08UoAMmAvvyHG41ZFI5BTgBVpgjMUMlrAx6RapUVXnKFbS/NdPqXmVwaC7Bnt3Om2s+cdArNwr8/X6ohtIRL+pWM+t463JYio/To3+05FA6UhoF7ECb+lOCfXvLWH7LeHFhw2jIKG/GoUXFSN80SyJlOMX/ZNqXcahwQfr7tRoNmxHMJq5kP0xZSoMRHa+jzsHUQmtEhNtNngSknfl1Nro3BgZybiRr5mUdvQAXbrvqzEAxWlfgZt4XOursuwlwz6QLveNWPSYzwg==
- X-Entity-ID
- u001.W4HSKSd9xIhnzUA6hOZYcg==
Unsubscribe and feedback
- List-Unsubscribe
- <https://manage.kmail-lists.com/…>
- List-Unsubscribe-Post
- List-Unsubscribe=One-Click
- X-Report-Abuse Identifies Klaviyo
- Please report any spam or abuse to: [email protected]
Message
- Content-Type
- multipart/alternative; boundary=b0c2da4ddf0f540fbb1269a546956dcac8392373f2ac76bb676e39bb87e8
- Date
- Mon, 21 Sep 2026 15:00:49 +0000 (UTC)
- From
- Eight Sleep <[email protected]>
- Mime-Version
- 1.0
- Message-ID
- <6iOB13gEQDiqyH3mHhr3xQ@geopod-ismtpd-7>
- Subject
- Not sure yet? You get 30 nights to find out*
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