Built for endurance and proven under stress
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- Subject
- Built for endurance and proven under stress
- From
- contact@
firstendurance.com - Brand
- First Endurance
- ESP
- Klaviyo
- Sent
- Fri Jun 19, 2026, 4:33 AM ET
- Sent to
- Canada (firstendurance.ca), optygen.com
- Size
- 15 KB
- Images
- 1
- Links
- 3, 2 of them buttons
- Subject length
- 43 characters
Against First Endurance's usual
Sent in its busiest hour, 4 AM, which holds 13% of its emails. The subject is 43 characters; its average is 34.
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- From
- Jonny Bigelow | First Endurance <[email protected]>
- Subject
- Built for endurance and proven under stress
- Date
- Fri, 19 Jun 2026 08:33:02 +0000
- Message-ID domain
- klaviyomail.com
- Return-Path domain
- k3.send.firstendurance.com
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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-Flow, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse
Sent just before and after
| Jun 22, 2026 4:33 AM | When precision matters... | |
| 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 (this email) | |
| Jun 18, 2026 4:08 PM | Built for Endurance. | |
| Jun 18, 2026 12:00 PM | What the research says about adaptogens | |
| Jun 18, 2026 4:33 AM | Your welcome offer is waiting |
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