Plain-English walkthroughs of the things every product that sends email has to get right.
Why WooCommerce order confirmations land in spam, how to confirm the diagnosis in Gmail in one minute, and the two-part fix that ends it: a real sending service plus the DNS records that prove your domain.
DAN 
A four-level ladder from local capture servers to sandboxed providers and stranger-proof staging, plus the five email assertions that actually catch production bugs.
DAN 
Verification, resets, receipts, dunning, invites, security alerts: the twelve transactional emails no product escapes, what belongs in each one, and the production failure each one is known for.
DAN 
The four DNS records behind every email your product sends, explained with one mental model, real record examples, and the failure modes that put authenticated mail in spam anyway.
DAN ZevSend is a developer API for transactional email, SMS, WhatsApp, and verification codes. Free plan, sandbox mode, and DNS records we generate for you.