My Magento transactional emails stopped sending, can you fix that?

Yes. When order confirmations, invoices or password resets silently vanish, the cause is almost always a stuck or disabled cron (Magento queues mail and sends it via cron), a broken SMTP / Sendgrid / Mailgun config, a sender-domain SPF/DKIM problem, or a template syntax error throwing on render. We check the email queue, fix the cron and the transport config, validate the templates, and send live test orders to confirm mail flows again. Details on the Magento email not sending fix page.