Email Routing Lab
See how a public address, MailerZ route, and destination inbox separate before you change MX.
Open Email Routing LabWorking checks
Tools next to Mail Box.
Not a second product.
Mail Box is Inbox, Sent, and New email. These pages help you check DNS, naming, and cutover before mail disappears. There is no standalone MX-lookup gadget here — leftover MX and MX failures live on troubleshooting.
Disposable email checker
Check whether an address looks like a throwaway mailbox, not a domain alias.
Open Disposable email checkerAlias name generator
Name role and vendor aliases you can actually keep.
Open Alias name generatorMigration planner
Plan MX cutover, leftover MX deletion, and a probe from another mailbox.
Open Migration plannerTroubleshooting
Leftover MX, self-send lies, SMTP codes, and held mail — the checks that exist on this site.
Open TroubleshootingNeed the inbox itself?
Open Mail Box for incoming, sent, and compose.