It’s not just your hormones

Preview text: How to understand your sleep issues once and for all

Sleep DoctorWednesday, Apr 8, 2026 at 3:30 AM EasternKlaviyo
Sleep DoctorIt’s not just your hormones
Subject
It’s not just your hormones
Preview text
How to understand your sleep issues once and for all
From
newsletter@sleepdoctor.com
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
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  1. from o1281.shared.klaviyomail.com [167.89.72.23] by our receiving server with ESMTPS
  2. by recvd-…-mfcb7 with SMTP
  3. from (unnamed) by geopod-ismtpd-47 with HTTP

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Sent just before and after

Apr 13, 2026 3:30 AMWhich PAP machine is actually right for you?
Apr 12, 2026 10:01 AMWhy you’re waking up with stiff muscles
Apr 9, 2026 3:30 AMBetter sleep is already within reach
Apr 8, 2026 3:30 AMIt’s not just your hormones (this email)
Apr 6, 2026 3:30 AMCan you change your circadian rhythm?
Apr 5, 2026 3:30 AMYour Spring Bedroom Reset: The Mattress Edit
Apr 2, 2026 3:30 AMSpring Refresh: Healthy Habits For Better Sleep

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