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What testosterone actually does — and why it drops after 30

The 1–2% per year decline explained

ZapplyMonday, Mar 23, 2026 at 3:16 PM EasternKlaviyo
ZapplyWhat testosterone actually does — and why it drops after 30
Subject
What testosterone actually does — and why it drops after 30
Preview text
The 1–2% per year decline explained
From
info@tryzapply.com
Brand
Zapply
Sent
Mon Mar 23, 2026, 3:16 PM ET
Sent to
Europe (zapply.eu)
Size
41 KB
Images
7
Links
9, 5 of them buttons
Subject length
59 characters

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Sent in the 3 PM hour, which holds 9% of its emails; 49% arrive in the 1 PM hour. The subject is 59 characters; its average is 35.

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