What we check
A complete email deliverability checkup, explained in plain English
MXHelper runs a full diagnostic on any domain in seconds. Type in a domain name and it queries live DNS for your MX, SPF, DKIM, DMARC, A, AAAA, NS and TXT records, works out which mail provider and DNS host you use, checks your sending server's reverse DNS and reputation against major blocklists, and looks up your domain registrar — then scores the whole setup from 0 to 100 so you can see your email health at a glance.
Most lookup tools dump a wall of raw records and leave you to decode them. MXHelper does the opposite: every result is explained in everyday language, and anything that needs attention shows up in an Issues to fix list with a step-by-step wizard. The wizard generates the exact record you need and walks you through adding it at your specific DNS provider — Cloudflare, GoDaddy, Namecheap and dozens more — so you're never left guessing where to click.
What each record does
MX records tell the world which servers receive mail for your domain. SPF lists the servers allowed to send mail as you. DKIM adds a cryptographic signature that proves a message wasn't altered in transit. DMARC ties SPF and DKIM together, tells receiving servers what to do with mail that fails, and sends you reports so you can spot abuse. Get those four right and your mail is authenticated end to end; miss one and messages can be silently filtered, quarantined, or rejected.
Who it's for
You don't need to be a DNS expert to use MXHelper. It's built for small-business owners whose invoices keep landing in customers' spam folders, IT admins migrating to a new mail provider, developers wiring up transactional email, and agencies auditing a client's domain before launch. Everything runs in your browser — there's no signup, no account, and no charge. Enter a domain, read the plain-English breakdown, and fix exactly what's flagged.
Why email authentication matters
Major mailbox providers — including Gmail, Yahoo, and Microsoft — increasingly expect every domain to publish valid SPF, DKIM, and DMARC records. Mail that fails these checks is often filtered straight to the spam folder, and under a strict DMARC policy it can be rejected and never delivered at all.
Getting all three records right keeps your email reaching the inbox, meets the sender requirements major providers now enforce, and stops spammers from spoofing your domain to send messages in your name. MXHelper checks all three in seconds and shows you exactly what to fix.