USB 3.2, USB 4 or Thunderbolt 4? Know the Difference

Preview text: Two ports can look identical and perform very differently.

Friday, Oct 16, 2026 at 9:00 PM EasternKlaviyo

ProGrade DigitalUSB 3.2, USB 4 or Thunderbolt 4? Know the Difference

Fit to screenFull size

USB 3.2, USB 4 or Thunderbolt 4? Know the Difference - email from ProGrade Digital

Using this email in an article? Credit: ProGrade Digital email via They Sent It, with a link to this page. Full-size image

Subject: USB 3.2, USB 4 or Thunderbolt 4? Know the Difference
Preview text: Two ports can look identical and perform very differently.
From: noreply@progradedigital.com
Brand: ProGrade Digital
ESP: Klaviyo
Sent: Fri Oct 16, 2026, 9:00 PM ET
Sent to: progradedigital.com, shop.progradedigital.com
Size: 47 KB
Images: 12
Links: 15, 1 of them buttons
Subject length: 52 characters

Against ProGrade Digital's usual

Sent in the 9 PM hour, which holds 11% of its emails; 70% arrive in the 3 PM hour. The subject is 52 characters; its average is 36.

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: ProGrade Digital <[email protected]>
Subject: USB 3.2, USB 4 or Thunderbolt 4? Know the Difference
Date: Sat, 17 Oct 2026 01:00:24 +0000
Message-ID domain: klaviyomail.com
Return-Path domain: k3.send.progradedigital.com
DKIM signature: d=shared.klaviyomail.com s=def1; d=send.progradedigital.com s=mtd1
List-Unsubscribe: Present, one-click

Servers it passed through, newest first

from (unnamed) by kmta-mta-green-….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

Report this email

Sent just before and after

	Oct 21, 2026 3:00 PM	High-Performance Storage for Demanding Shoots
	Oct 19, 2026 3:01 PM	Capture More, Transfer Faster & Save
	Oct 18, 2026 1:01 PM	Capture More Emotion in Your Photography
	Oct 16, 2026 9:00 PM	USB 3.2, USB 4 or Thunderbolt 4? Know the Difference (this email)
	Oct 13, 2026 4:15 PM	Last chance for 10% OFF
	Oct 12, 2026 6:07 PM	Still thinking about your pick?
	Oct 10, 2026 6:06 PM	Did you see something you liked?