How do you know it's working?
Preview text: Write down one number a day, and you stop guessing

Using this email in an article? Credit: The Standard Lab email via They Sent It, with a link to this page. Full-size image
- Subject
- How do you know it's working?
- Preview text
- Write down one number a day, and you stop guessing
- From
- studio@
thestandardlab.com - Brand
- The Standard Lab
- ESP
- Klaviyo
- Sent
- Wed Oct 7, 2026, 1:00 PM ET
- Size
- 38 KB
- Images
- 3
- Links
- 3, 2 of them buttons
- Subject length
- 29 characters
Against The Standard Lab's usual
Sent in its busiest hour, 1 PM, which holds 38% of its emails. The subject is 29 characters; its average is 33.
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
- The Standard Lab <[email protected]>
- Subject
- How do you know it's working?
- Date
- Wed, 07 Oct 2026 17:00:52 +0000
- Message-ID domain
- klaviyomail.com
- Return-Path domain
- send.thestandardlab.com
- DKIM signature
- d=shared.klaviyomail.com s=def1; d=thestandardlab.com s=kl1
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- from (unnamed) by kmta-mta-blue-….servers.clovesoftware.com with SMTP
Other sending headers (names only): X-Mailer-Info-Extra2, X-Mailer-Info, X-Mailer-Info-Extra, X-Kmail-Account, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse
Sent just before and after
| Oct 13, 2026 8:25 AM | Welcome To Standard Lab | |
| Oct 10, 2026 1:02 PM | The hospital drip thing, explained | |
| Oct 8, 2026 1:05 PM | Why we skipped the powder | |
| Oct 7, 2026 1:00 PM | How do you know it's working? (this email) | |
| Oct 5, 2026 9:00 PM | Read our 4 star reviews first | |
| Oct 3, 2026 1:31 PM | The email you read three times | |
| Oct 1, 2026 1:07 PM | Most liver pills won't show you this part |
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Sent the same day by similar brands
Same ESP and the closest weekly volume, sent on Oct 7, 2026.








