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h2xMonday, Apr 20, 2026 at 2:34 AM EasternHubSpot
h2xThanks for subscribing to H2X
Subject
Thanks for subscribing to H2X
Preview text
Thanks for subscribing to H2X 96 Hi there, Thanks so much for joining our mailing list. I…
From
jordan@h2xengineering.com
Brand
h2x
Sent
Mon Apr 20, 2026, 2:34 AM ET
Size
23 KB
Images
2
Links
3, 1 of them buttons
Subject length
29 characters

Against h2x's usual

Sent in its busiest hour, 2 AM, which holds 36% of its emails. The subject is 29 characters; its average is 35.

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From
Jordan Mills <[email protected]>
Subject
Thanks for subscribing to H2X
Date
Mon, 20 Apr 2026 07:34:50 +0100
Message-ID domain
bf05x.hubspotemail.net
Return-Path domain
bf05x.hubspotemail.net
DKIM signature
d=bf05x.hubspotemail.net s=hs2; d=h2xengineering.com s=hs1-8106102
Authentication
dkim=pass (bf05x.hubspotemail.net), dkim=pass (h2xengineering.com), spf=pass (bf05x.hubspotemail.net), dmarc=pass (h2xengineering.com)
List-Unsubscribe
Present, one-click
Feedback-ID sender
HubSpot

Servers it passed through, newest first

  1. from 4f2owg.bf05x.hubspotemail.net [108.179.149.254] by our receiving server with ESMTPS

Other sending headers (names only): X-HS-Cid, X-Report-Abuse-To

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Sent just before and after

May 4, 2026 2:35 AMDesigning hot water systems
Apr 29, 2026 11:00 AMOne-Stop Heat Load Calcs & System Design
Apr 27, 2026 2:35 AMHow to size water pipes
Apr 20, 2026 2:34 AMThanks for subscribing to H2X (this email)
Apr 6, 2026 2:35 AMSizing PRV's
Mar 30, 2026 2:35 AMDesigning hot water systems
Mar 23, 2026 3:34 AMHow to size water pipes

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