That comfort upgrade is still waiting.
Preview text: Your extra savings are still active.
Using this email in an article? Credit: Slumblr email via They Sent It, with a link to this page. Full-size image
- Subject
- That comfort upgrade is still waiting.
- Preview text
- Your extra savings are still active.
- From
- support@
slumblr.com - Brand
- Slumblr
- ESP
- Klaviyo
- Sent
- Thu Sep 10, 2026, 3:52 AM ET
- Sent to
- slumblr.com
- Size
- 48 KB
- Images
- 9
- Links
- 10, 6 of them buttons
- Subject length
- 38 characters
Against Slumblr's usual
Sent in its busiest hour, 3 AM, which holds 16% of its emails. The subject is 38 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
- Slumblr <[email protected]>
- Subject
- That comfort upgrade is still waiting.
- Date
- Thu, 10 Sep 2026 07:52:04 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-23
- Return-Path domain
- hello.slumblr.com
- DKIM signature
- d=slumblr.com s=kl2
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- by recvd-…-fn5ch with SMTP
- from (unnamed) by geopod-ismtpd-23 with HTTP
Other sending headers (names only): X-Kmail-Account, X-Kmail-Flow, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse, X-SG-EID, X-SG-ID, X-Entity-ID
Sent just before and after
| Sep 16, 2026 11:00 PM | 50% OFF + extra 10% for better sleep 😴 | |
| Sep 12, 2026 3:51 AM | A little extra help deciding 🎁 | |
| Sep 11, 2026 3:02 AM | Don't buy another pillow yet | |
| Sep 10, 2026 3:52 AM | That comfort upgrade is still waiting. (this email) | |
| Sep 9, 2026 1:00 AM | We made Slumblr cheaper this week | |
| Sep 4, 2026 11:00 PM | If you fold your pillow every night, read this · Resent | |
| Sep 2, 2026 11:00 PM | Tomorrow morning starts tonight |
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