Stay cool all night with up to 46% off bedding
Preview text: Plus, beat the heat early with the best cooling mattress deals
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- Subject
- Stay cool all night with up to 46% off bedding
- Preview text
- Plus, beat the heat early with the best cooling mattress deals
- From
- newsletter@
sleepdoctor.com - Brand
- Sleep Doctor
- ESP
- Klaviyo
- Sent
- Wed May 13, 2026, 3:30 AM ET
- Sent to
- singularsleep.com, sleepdoctor.com
- Size
- 92 KB
- Images
- 14
- Links
- 33, 16 of them buttons
- Subject length
- 46 characters
Against Sleep Doctor's usual
Sent in the 3 AM hour, which holds 20% of its emails; 23% arrive in the 9 AM hour. The subject is 46 characters; its average is 37.
Email headers
What the brand's servers put on this email. Our receiving servers, the address we subscribed with and unsubscribe links are left out.
- From
- Sleep Doctor <[email protected]>
- Subject
- Stay cool all night with up to 46% off bedding
- Date
- Wed, 13 May 2026 07:30:11 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-106
- Return-Path domain
- email.sleepdoctor.com
- DKIM signature
- d=sleepdoctor.com s=kl2
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- from o1393.shared.klaviyomail.com [149.72.240.239] by our receiving server with ESMTPS
- by recvd-…-zhxgq with SMTP
- from (unnamed) by geopod-ismtpd-106 with HTTP
Other sending headers (names only): X-Kmail-Account, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse, X-SG-EID, X-SG-ID, X-Entity-ID
Sent just before and after
| May 15, 2026 11:30 AM | 3 Days Only: 15% Off Your Home Sleep Study | |
| May 14, 2026 3:30 AM | Everything your therapy has been missing | |
| May 13, 2026 1:04 PM | See something you like? | |
| May 13, 2026 3:30 AM | Stay cool all night with up to 46% off bedding (this email) | |
| May 11, 2026 3:30 AM | The best (and worst) positions for sleep apnea | |
| May 10, 2026 3:30 AM | Ever dream your teeth were falling out? Here’s why. | |
| May 7, 2026 10:30 AM | When is "poor sleep" actually a medical issue? |
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