Hard sessions only pay off if you can recover.
Preview text: Ultragen completes the system

Use this example
- Subject
- Hard sessions only pay off if you can recover.
- Preview text
- Ultragen completes the system
- From
- contact@
firstendurance.com - Brand
- First Endurance
- ESP
- Klaviyo
- Sent
- Wed Oct 21, 2026, 12:35 AM ET
- Sent to
- firstendurance.com, optygen.com
- Size
- 49 KB
- Images
- 17
- Links
- 18, 5 of them buttons
- Subject length
- 46 characters
Against First Endurance's usual
Sent in the 12 AM hour, which holds 10% of its emails; 12% arrive in the 4 AM hour. The subject is 46 characters; its average is 34.
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
- First Endurance <[email protected]>
- Subject
- Hard sessions only pay off if you can recover.
- Date
- Wed, 21 Oct 2026 04:35:25 +0000
- Message-ID domain
- klaviyomail.com
- Return-Path domain
- k3.send.firstendurance.com
- DKIM signature
- d=shared.klaviyomail.com s=def1; d=send.firstendurance.com s=mtd1
- 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-Flow, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse
Sent just before and after
| Oct 23, 2026 12:37 AM | The easiest thing you'll do today | |
| Oct 22, 2026 12:36 AM | What to expect when committing to the system | |
| Oct 21, 2026 10:55 PM | The easiest thing you'll do today | |
| Oct 21, 2026 12:35 AM | Hard sessions only pay off if you can recover. (this email) | |
| Oct 20, 2026 10:53 PM | What to expect when committing to the system | |
| Oct 20, 2026 1:29 PM | More Than Results | |
| Oct 20, 2026 12:34 AM | The fuel serious endurance athletes train with |
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