Not sure yet? You get 30 nights to find out*
Sleep on it before you fully commit
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.
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30 nights to find out
No risk, until you've tried it
Try risk-free for 30 nights | Free shipping & returns | 5-year warranty**
Email headers
sender, ESP fingerprints, unsubscribe and auth headers
As received, minus the delivery side: the archive's own addresses appear as [recipient], relay hops and signatures are left out, and unsubscribe links are trimmed to their host.
- Received-SPF
- 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
- [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
- 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*
- List-Unsubscribe
- <https://manage.kmail-lists.com/…>
- List-Unsubscribe-Post
- List-Unsubscribe=One-Click
- X-Kmail-Account
- QtJCHb
- X-Kmail-Message
- 01M1QMJW5HSX01A5QNSHJ0Q7ZH
- X-Kmail-Ops
- 01KX3E8K3PGKM7R311RDDHG1NK
- X-Report-Abuse
- Please report any spam or abuse to: [email protected]
- 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==
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