Built this week: sellers now own their buyer emails too

Pluribox is a checkout that lives on YOUR site so buyers never leave your page, and you stay the merchant of record through your own Stripe account. This week I extended that philosophy to the inbox.

Until now, every buyer email (purchase confirmation, download link, review request) went out looking like my platform. Functionally correct but users may want more: the sale is the seller's, so the email should be too.

What shipped:

* Sellers can customise the subject and intro of every buyer email, with a live preview rendered by the exact same code that sends the real thing. No "preview drift" possible, by construction.

* Their logo, colours and font on every email. Their name as the sender.

* Review request emails that automatically show the review reward when a product has one configured, so the email can never promise something the product page doesn't.

* Pro sellers can send from their own domain (noreply@theirbrand.com) with guided DNS verification. Every plan still gets solid deliverability from our shared domain.

Three things production testing taught me this week: email clients ignore flexbox entirely (learned it once months ago, the lesson paid rent again), Cloudflare replaces your API's 502 responses with its own HTML error page so your frontend never sees the real error, and DNS negative caching means a verification check that ran before your records existed can keep saying "not there" after they are.

[Solo founder, non-technical, building with my AI assistant.]