You may not know this
Preview text: Everything organised by topic

Using this email in an article? Credit: Derek Callan email via They Sent It, with a link to this page. Full-size image
- Subject
- You may not know this
- Preview text
- Everything organised by topic
- From
- derek@
derekcallan.com - Brand
- Derek Callan
- Sent
- Thu Oct 1, 2026, 1:08 PM ET
- Size
- 21 KB
- Images
- 1
- Links
- 2, 1 of them buttons
- Subject length
- 21 characters
Against Derek Callan's usual
Sent in its busiest hour, 1 PM, which holds 28% of its emails. The subject is 21 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.
- From
- Derek Callan <[email protected]>
- Subject
- You may not know this
- Date
- Thu, 1 Oct 2026 17:08:06 +0000 (GMT)
- Message-ID domain
- service-v2-769bdf9d48-hpks7
- Return-Path domain
- em-3401318.derekcallan.com
- DKIM signature
- d=derekcallan.com s=acdkim1; d=acems1.com s=acdkim1
- List-Unsubscribe
- Present, one-click
- Mailer
- ActiveCampaign Mailer
- Feedback-ID sender
- activecampaign
Servers it passed through, newest first
- from (unnamed) by acems1.com with ESMTPS
Other sending headers (names only): X-KumoRef, X-DKIM-Options, X-Virtual-Mta, X-250ok-CID, X-Sending-Engine, X-Report-Abuse, X-lid, X-mid
Sent just before and after
| Oct 9, 2026 2:50 AM | The Story Behind English for Professionals | |
| Oct 9, 2026 1:50 AM | Thanks for joining my email list – here’s a little thank you surprise! | |
| Oct 8, 2026 1:09 PM | She used to sit in silence on calls | |
| Oct 1, 2026 1:08 PM | You may not know this (this email) | |
| Sep 24, 2026 1:08 PM | Try this before your next meeting | |
| Sep 17, 2026 1:03 PM | The gap between what you know and how you sound | |
| Sep 3, 2026 1:03 PM | What brings you here? |
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Thanks for joining my email list – here’s a little thank you surprise!
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Use this 5-step structure to sound more convincing
Oct 15, 2026 1:09 PM
The Story Behind English for Professionals
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