Built for Endurance.
Preview text: Save 20% on clinically formulated fueling.
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- Subject
- Built for Endurance.
- Preview text
- Save 20% on clinically formulated fueling.
- From
- contact@
firstendurance.com - Brand
- First Endurance
- ESP
- Klaviyo
- Sent
- Thu Jun 18, 2026, 4:08 PM ET
- Sent to
- Canada (firstendurance.ca), optygen.com
- Size
- 45 KB
- Images
- 15
- Links
- 17, 5 of them buttons
- Subject length
- 20 characters
Against First Endurance's usual
Sent in the 4 PM hour, which holds 3% of its emails; 13% arrive in the 4 AM hour. The subject is 20 characters; its average is 34.
Email headers
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- From
- First Endurance <[email protected]>
- Subject
- Built for Endurance.
- Date
- Thu, 18 Jun 2026 20:08:44 +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 kl-203-28-201.kmta.shared.klaviyomail.com [170.203.28.201] by our receiving server with ESMTPS
- from (unnamed) by kmta-mta-green-….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
| Jun 21, 2026 7:01 PM | Save $20 on OptygenHP + Free Shipping | |
| Jun 21, 2026 4:33 AM | Structure your nutrition like your training | |
| Jun 19, 2026 4:33 AM | Built for endurance and proven under stress | |
| Jun 18, 2026 4:08 PM | Built for Endurance. (this email) | |
| Jun 18, 2026 12:00 PM | What the research says about adaptogens | |
| Jun 18, 2026 4:33 AM | Your welcome offer is waiting | |
| Jun 16, 2026 1:14 PM | Chasing adaptations during race season |
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