Private by design
Every inbox is scoped to the signed-in gocools account. No shared mailboxes, no cross-tenant access.
mailcools
internal inbox
MailCools Inbox
Internal inboxes for every gocools username.
MailCools creates a private mailbox for every account. External SMTP stays off—internal MailCools sending only, with isolated delivery for notifications, receipts, and recovery.
New to gocools? Create a username + phone first—your inbox becomes username@mailcools.com automatically.
✉️
Categories
Automatic sorting
Every mailbox ships with the exact categories you asked for—nothing extra, nothing hidden.
InboxSpamPromotionsSentOutboxUpdatesSocialsTrash
Recovery ready
Forgot password? Resets are delivered to your MailCools inbox or verified phone number only.
Internal sending
Send MailCools-to-MailCools messages without port 25. External SMTP remains blocked by default.