When Did You Last Change Your Filters?

Preview text: Dirty filters can rob power, hurt fuel economy, and shorten the life of expensive…

Sunday, Jul 19, 2026 at 6:00 PM EasternKlaviyo

Sinister DieselWhen Did You Last Change Your Filters?

Image not available

No image available for this email.

Subject: When Did You Last Change Your Filters?
Preview text: Dirty filters can rob power, hurt fuel economy, and shorten the life of expensive…
From: do-not-reply@sinisterdiesel.com
Brand: Sinister Diesel
ESP: Klaviyo
Sent: Sun Jul 19, 2026, 6:00 PM ET
Size: 31 KB
Images: 7
Links: 8, 3 of them buttons
Subject length: 38 characters

Against Sinister Diesel's usual

Sent in the 6 PM hour, which holds 16% of its emails; 16% arrive in the 10 AM hour. The subject is 38 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 o1391.shared.klaviyomail.com [149.72.166.62] by our receiving server with ESMTPS
by recvd-…-gq4p5 with SMTP
from (unnamed) by geopod-ismtpd-47 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

	Jul 25, 2026 3:26 AM	🤔 Still considering your upgrade?
	Jul 24, 2026 3:25 AM	👀 You were checking this out earlier
	Jul 23, 2026 10:16 AM	2X Rewards Are Live 🔥
	Jul 19, 2026 6:00 PM	When Did You Last Change Your Filters? (this email)
	Jul 12, 2026 6:00 PM	Once They're Gone, They're Gone.
	Jul 11, 2026 10:50 AM	Still on the fence?
	Jul 11, 2026 10:01 AM	Is Your Truck Ready to Tow This Summer?