How to save 8 watts
Preview text: The science of marginal gains, explained by our CEO Josh Poertner

Using this email in an article? Credit: SILCA email via They Sent It, with a link to this page. Full-size image
- Subject
- How to save 8 watts
- Preview text
- The science of marginal gains, explained by our CEO Josh Poertner
- From
- sales@
silca.cc - Brand
- SILCA
- ESP
- Klaviyo
- Sent
- Sat Oct 31, 2026, 1:53 PM ET
- Size
- 48 KB
- Images
- 12
- Links
- 15, 5 of them buttons
- Subject length
- 19 characters
Against SILCA's usual
Sent in the 1 PM hour, which holds 7% of its emails; 65% arrive in the 10 AM hour. The subject is 19 characters; its average is 33.
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
- SILCA <[email protected]>
- Subject
- How to save 8 watts
- Date
- Sat, 31 Oct 2026 17:53:27 +0000 (UTC)
- Message-ID domain
- geopod-ismtpd-65
- Return-Path domain
- send.silca.cc
- DKIM signature
- d=silca.cc s=kl2
- List-Unsubscribe
- Present, one-click
Servers it passed through, newest first
- by recvd-…-4pctm with SMTP
- from (unnamed) by geopod-ismtpd-65 with HTTP
Other sending headers (names only): X-Kmail-Account, X-Kmail-Flow, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse, X-SG-EID, X-SG-ID, X-Entity-ID
Sent just before and after
| Nov 3, 2026 7:48 AM | What's the fastest tire? | |
| Nov 1, 2026 7:54 AM | Is your bike ready for garage season? | |
| Oct 31, 2026 1:53 PM | How to save 8 watts (this email) | |
| Oct 30, 2026 1:52 PM | The $15 lube is the expensive choice. | |
| Oct 29, 2026 1:51 PM | The high cost of cheap parts | |
| Oct 29, 2026 11:00 AM | NEW: Your clogs just got a titanium upgrade | |
| Oct 28, 2026 1:50 PM | Riders’ favorites. Proven. Trusted. |
More from SILCA
All SILCA emailsNov 3, 2026 7:48 AM
Is your bike ready for garage season?
Nov 1, 2026 7:54 AM
The $15 lube is the expensive choice.
Oct 30, 2026 1:52 PM
Oct 29, 2026 1:51 PM
NEW: Your clogs just got a titanium upgrade
Oct 29, 2026 11:00 AM
Riders’ favorites. Proven. Trusted.
Oct 28, 2026 1:50 PM
Designed for riders who notice the details
Oct 27, 2026 1:49 PM
Bike going on the trainer? Open this.
Oct 27, 2026 7:48 AM
Sent the same day by similar brands
Same ESP and the closest weekly volume, sent on Oct 31, 2026.









