Notes from the inbox.
Peptides, supplements, research compounds. What we learn running email and SMS for brands in this category: your own sending domain, deliverability that holds, revenue you can trust, and copy that stays inside the lines.
Which email actually made the sale?
Most platforms credit any email a buyer received in the last few days. How to tell the sales email drove from the ones it just happened to be near.
ReadHow to warm up a new sending domain
A new domain has no reputation. The schedule we use to take one from zero to a full list without landing in spam.
ReadYour open rate is lying to you
Apple Mail opens email on its own and company security scanners click every link. How fake engagement gets into your numbers and your segments.
ReadGmail, Yahoo and Outlook sender rules, in plain English
What the three biggest inboxes require from anyone sending marketing email in 2026, and what it means for a peptide brand's setup.
ReadCheck every link before you hit send
A button pointing at a page that no longer exists costs you the sale. How it happens to careful teams and how to stop it for good.
ReadFake signups are burning your sending domain
Bots that register with made-up email addresses turn into hard bounces the moment your welcome flow fires. How to stop them before they cost you.
ReadWhy your email links say Not secure
Click tracking sends every link through a tracking address first. If that address has no security certificate, customers see a warning before they see your store.
ReadPeptide ads on Meta, Google, TikTok and X: what the rules say
None of the big ad platforms name research peptides, but each has rules that cover them. What every policy says, and where that leaves a peptide brand's marketing.
ReadKlaviyo banned my peptide store. What now?
The account is frozen and the flows have stopped. What to do in the first hour, the first day and the first month so you keep the list.
ReadDoes Shopify Email allow peptides?
Shopify's own policy doesn't list products. The rule that matters is two documents down, in the terms of the company that actually sends your email.
ReadBrevo now bans peptides by name
Brevo added a clause in summer 2026 that names peptide products, including ones labeled research use only. What it covers and what it doesn't.
ReadSending email when the platforms say no
Peptide and supplement brands get flagged the moment they sign up. Here is what keeps the email landing anyway.
ReadCopy that sells and stays inside the lines
You can write email that converts without making a claim you cannot back. How to talk about research compounds the right way.
ReadThe fatigue window that protects your domain
Blasting the whole list every week is how a sending reputation dies. Send to the people ready to open, hold the rest.
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