Why your coffee stopped working

Preview text: Rivox Education 02 | Caffeine Tolerance Caffeine tolerance is real. Here’s what changes…

Rivox LabsThursday, Sep 17, 2026 at 11:32 AM EasternKlaviyo
Rivox LabsWhy your coffee stopped working
Subject
Why your coffee stopped working
Preview text
Rivox Education 02 | Caffeine Tolerance Caffeine tolerance is real. Here’s what changes…
From
hello@rivoxlabs.com
Sent
Thu Sep 17, 2026, 11:32 AM ET
Size
19 KB
Images
4
Links
6, 2 of them buttons
Subject length
31 characters

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Sent in the 11 AM hour, which holds 18% of its emails; 24% arrive in the 4 PM hour. The subject is 31 characters; its average is 41.

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From
Rivox Labs <[email protected]>
Subject
Why your coffee stopped working
Date
Thu, 17 Sep 2026 15:32:45 +0000
Message-ID domain
klaviyomail.com
Return-Path domain
tbfvqd.shared.klaviyomail.com
DKIM signature
d=shared.klaviyomail.com s=def1; d=shared.klaviyomail.com s=mtb1
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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

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Sent just before and after

Oct 1, 2026 2:17 PMYour first Rivox order comes loaded
Oct 1, 2026 11:30 AMThe caffeine number most people get wrong
Sep 24, 2026 11:31 AMYour caffeine lasts longer than the buzz
Sep 17, 2026 11:32 AMWhy your coffee stopped working (this email)
Sep 10, 2026 12:10 PMWhy caffeine feels different with L-theanine
Sep 7, 2026 6:30 PMEnds tonight: 25% off Rivox
Sep 4, 2026 10:17 AMClock out. Lock in. 25% off sitewide.

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