Managed SMTP relay for developers and teams who need app email to reach the inbox. Point any SMTP-capable app or framework at SMTPCart credentials; we handle SPF/DKIM/DMARC, TLS, isolated or dedicated IPs, warm-up and daily blocklist monitoring.
SMTPCart started from years of hands-on work running email infrastructure and fixing deliverability problems. We saw developers lose hours to SPF/DKIM/DMARC records, shared-IP reputation hits and silent spam-folder failures, so we built a managed SMTP relay where our team runs the sending servers, authentication, warm-up and daily blocklist monitoring - and you just point your app at an SMTP host.
Our stack
Managed SMTP relay with TLS encryption, SPF, DKIM and DMARC authentication, isolated and dedicated IP pools, managed IP/domain warm-up, bounce and complaint processing, daily blocklist monitoring. Works with any SMTP client: WordPress/WooCommerce, Laravel, Django, Rails, Node.js (Nodemailer), PHPMailer, CRMs and billing tools.