It’s not just your hormones
Preview text: How to understand your sleep issues once and for all
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- Subject
- It’s not just your hormones
- Preview text
- How to understand your sleep issues once and for all
- From
- newsletter@
sleepdoctor.com - Brand
- Sleep Doctor
- ESP
- Klaviyo
- Sent
- Wed Apr 8, 2026, 3:30 AM ET
- Sent to
- singularsleep.com, sleepdoctor.com
- Size
- 86 KB
- Images
- 13
- Links
- 25, 8 of them buttons
- Subject length
- 28 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 28 characters; its average is 37.
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- From
- Sleep Doctor <[email protected]>
- Subject
- It’s not just your hormones
- Date
- Wed, 08 Apr 2026 07:30:22 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-47
- Return-Path domain
- email.sleepdoctor.com
- DKIM signature
- d=sleepdoctor.com s=kl2
- List-Unsubscribe
- Present, one-click
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- from o1281.shared.klaviyomail.com [167.89.72.23] by our receiving server with ESMTPS
- by recvd-…-mfcb7 with SMTP
- from (unnamed) by geopod-ismtpd-47 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
| Apr 13, 2026 3:30 AM | Which PAP machine is actually right for you? | |
| Apr 12, 2026 10:01 AM | Why you’re waking up with stiff muscles | |
| Apr 9, 2026 3:30 AM | Better sleep is already within reach | |
| Apr 8, 2026 3:30 AM | It’s not just your hormones (this email) | |
| Apr 6, 2026 3:30 AM | Can you change your circadian rhythm? | |
| Apr 5, 2026 3:30 AM | Your Spring Bedroom Reset: The Mattress Edit | |
| Apr 2, 2026 3:30 AM | Spring Refresh: Healthy Habits For Better Sleep |
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