The 20-minute rule
Preview text: Japan has a word for it
Image not available
No image available for this email.
- Subject
- The 20-minute rule
- Preview text
- Japan has a word for it
- From
- support@
mantasleep.com - Brand
- Manta Sleep
- ESP
- Klaviyo
- Sent
- Wed Aug 19, 2026, 6:45 PM ET
- Sent to
- mantasleep.com
- Size
- 36 KB
- Images
- 11
- Links
- 12, 5 of them buttons
- Subject length
- 18 characters
Against Manta Sleep's usual
Sent in the 6 PM hour, which holds 7% of its emails; 19% arrive in the 10 AM hour. The subject is 18 characters; its average is 29.
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
- Manta Sleep <[email protected]>
- Subject
- The 20-minute rule
- Date
- Wed, 19 Aug 2026 22:45:20 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-56
- Return-Path domain
- klaviyo.mantasleep.com
- DKIM signature
- d=mantasleep.com s=kl2
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- by recvd-…-629cs with SMTP
- from (unnamed) by geopod-ismtpd-56 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
| Aug 31, 2026 2:00 AM | What’s your problem? | |
| Aug 28, 2026 6:00 AM | What is a bedroom? | |
| Aug 24, 2026 12:00 AM | ASMR for sleep. It’s a thing. | |
| Aug 19, 2026 6:45 PM | The 20-minute rule (this email) | |
| Aug 17, 2026 8:00 AM | Hustle culture is dead | |
| Aug 14, 2026 11:02 AM | The countdown to school just started | |
| Aug 12, 2026 10:03 AM | The siesta secret |
More from Manta Sleep
All Manta Sleep emailsThey’re here: NEW Manta Sleep Earplugs
Nov 6, 2026 9:02 AM
Nov 4, 2026 5:00 PM
Our camera roll is full of you
Nov 4, 2026 4:00 AM
Nov 2, 2026 9:09 PM
Nov 1, 2026 8:00 AM
2 million people are sleeping better
Oct 31, 2026 10:08 PM
Oct 31, 2026 11:27 AM
Oct 30, 2026 10:07 PM
