Nylon toothbrush bristles are almost 90 years old.

Preview text: Most things from the 1930s got replaced. This one somehow didn't.

ProprWednesday, Sep 9, 2026 at 6:30 PM EasternKlaviyo
ProprNylon toothbrush bristles are almost 90 years old.
Subject
Nylon toothbrush bristles are almost 90 years old.
Preview text
Most things from the 1930s got replaced. This one somehow didn't.
From
info@proprdental.com
Brand
Propr
Sent
Wed Sep 9, 2026, 6:30 PM ET
Sent to
proprdental.com
Size
35 KB
Images
9
Links
8, 5 of them buttons
Subject length
50 characters

Against Propr's usual

Sent in its busiest hour, 6 PM, which holds 36% of its emails. The subject is 50 characters; its average is 42.

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From
Propr <[email protected]>
Subject
Nylon toothbrush bristles are almost 90 years old.
Date
Wed, 09 Sep 2026 22:30:05 +0000
Message-ID domain
klaviyomail.com
Return-Path domain
k3.send.proprdental.com
DKIM signature
d=shared.klaviyomail.com s=def1; d=send.proprdental.com s=mtd1
List-Unsubscribe
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  1. from (unnamed) by kmta-mta-blue-….servers.clovesoftware.com with SMTP

Other sending headers (names only): X-Mailer-Info-Extra2, X-Mailer-Info, X-Mailer-Info-Extra, X-Kmail-Account, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse

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Sent just before and after

Sep 29, 2026 6:30 PMThis is what your morning routine is missing.🦷
Sep 23, 2026 6:30 PMAll the clean. None of the cords.
Sep 16, 2026 6:30 PMMost toothbrushes were built to be cheap. This one wasn't.🪥
Sep 9, 2026 6:30 PMNylon toothbrush bristles are almost 90 years old. (this email)
Sep 5, 2026 10:07 AMGive your gums a day off this weekend.
Sep 2, 2026 7:03 PMPropr is now on Amazon. 📦
Aug 26, 2026 6:30 PMYour oral care routine is still stuck in the garage era.

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