If you read only Shopify's acceptable use policy, Shopify Email looks like it might work for a peptide store. The policy is a list of principles, mostly about not breaking the law where you do business, and it doesn't name any products. But that isn't the whole set of rules you agree to.
Where the real rule lives
Shopify's terms of service say Shopify Email is sent through SendGrid, a Twilio company, and that your use of it is subject to Twilio's acceptable use policy. Twilio's policy in turn pulls in its email-specific terms.
Those email terms ban health claims about products that prevent, treat or cure illness unless a government authority has approved them, and advertising prescription drugs that can't legally be sold over the counter. Those are the two rules a peptide email is most likely to cross.
What that means for your store
- Shopify Email isn't a safe harbor just because Shopify's own page doesn't mention peptides.
- Copy that hints at results, dosing or treatment is exactly what the email terms prohibit.
- Shopify Email runs inside the same account as your store. Keeping email on its own platform and sending domain keeps an email problem separate from the store.
We read the policies of 15 email platforms on what they say about peptides and research-use products, with links to every one, in our guide to which email platforms allow peptide brands.