What does NSF certified actually mean?

Preview text: What to look for when comparing filters, plus 20% off Filters Fast brand.

Sunday, Oct 11, 2026 at 8:33 AM EasternKlaviyo

Filters FastWhat does NSF certified actually mean?

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Subject: What does NSF certified actually mean?
Preview text: What to look for when comparing filters, plus 20% off Filters Fast brand.
From: marketing@email.filtersfast.com
Brand: Filters Fast
ESP: Klaviyo
Sent: Sun Oct 11, 2026, 8:33 AM ET
Sent to: acepols.com, acepoolsmanager.com, filteras.com, filters-fast.com, Colombia (filtersfast.co), filtersfast.com, filtersfast.org, filtersfats.com, kenmorefilter.com, kenmorefilters.com, warerfilters.com, wateffilters.com, waterfiltets.com, waterfulters.com, watrefilters.com, watrfilters.com, whirlpoolfilter.com
Size: 70 KB
Images: 11
Links: 17, 5 of them buttons
Subject length: 38 characters

Against Filters Fast's usual

Sent in its busiest hour, 8 AM, which holds 33% of its emails. The subject is 38 characters; its average is 37.

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.

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

	Oct 11, 2026 3:11 PM	hey, need anything?
	Oct 11, 2026 11:22 AM	Your selections come with 10% off
	Oct 11, 2026 11:13 AM	[OPEN] to unlock 10% off
	Oct 11, 2026 8:33 AM	What does NSF certified actually mean? (this email)
	Oct 10, 2026 11:21 AM	Take another look + 10% off
	Oct 10, 2026 8:28 AM	You filter the water you drink. What about your shower? 💧
	Oct 9, 2026 9:11 AM	Take 20% off + give your home an upgrade 🏡