The 5-minute fix that slows aging
Preview text: try this before your next workout
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- Subject
- The 5-minute fix that slows aging
- Preview text
- try this before your next workout
- From
- support@
hardtokillfitness.co - Brand
- Hard To Kill Fitness
- ESP
- Klaviyo
- Sent
- Fri Apr 17, 2026, 10:01 AM ET
- Size
- 50 KB
- Images
- 6
- Links
- 9, 6 of them buttons
- Subject length
- 33 characters
Against Hard To Kill Fitness's usual
Sent in its busiest hour, 10 AM, which holds 35% of its emails. The subject is 33 characters; its average is 28.
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
- Hard To Kill Fitness <[email protected]>
- Subject
- The 5-minute fix that slows aging
- Date
- Fri, 17 Apr 2026 14:01:40 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-canary-0
- Return-Path domain
- send.hardtokillfitness.co
- DKIM signature
- d=hardtokillfitness.co s=kl2
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- from o1397.shared.klaviyomail.com [149.72.167.101] by our receiving server with ESMTPS
- by recvd-…-j85wj with SMTP
- from (unnamed) by geopod-ismtpd-canary-0 with HTTP
Other sending headers (names only): X-Kmail-Account, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse, X-SG-EID, X-SG-ID, X-Entity-ID
Sent just before and after
| Apr 22, 2026 4:57 PM | Just a reminder... | |
| Apr 21, 2026 4:58 PM | One Step Away... | |
| Apr 20, 2026 4:57 PM | Like what you saw... | |
| Apr 17, 2026 10:01 AM | The 5-minute fix that slows aging (this email) | |
| Mar 18, 2026 9:59 PM | Just a reminder... | |
| Mar 17, 2026 9:58 PM | One Step Away... | |
| Mar 16, 2026 9:59 PM | Like what you saw... |
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