One address they know. As many as you need, on your own rules.

JMail is Spamjadoo's system of disposable, rule-bound email aliases: each alias is a real forwarding address you can restrict by sender, expiry date, or message count, and revoke instantly if it leaks. Give a different alias to each website or supplier, and your real address is never exposed.

How an alias works

An alias is a real address on your domain, for example shop-2026@example.com, that forwards to your mailbox. Attached to it is a policy:

Who may send. Any sender, a list of domains, or a single address.
Until when. Open-ended, or expiring on a date.
How much. Unlimited, or a count after which the alias closes.

Mail that breaks the policy is refused during the SMTP session, before content is transferred, exactly like any other handshake rejection. The sender sees the refusal; you see nothing.

Revoking

When an alias starts receiving mail from parties you never gave it to, the address has been sold or leaked. Revoke it. From that moment every attempt to reach it is answered with:

revoked alias · illustrative

C: RCPT TO:<shop-2026@example.com>S: 550 5.1.1 Address revoked by owner

Compared with plus addressing

	Plus addressing	JMail
Reveals your real address	Yes (strip the +tag)	No
Can be revoked	No	Yes, at the handshake
Bound to a sender	No	Yes
Expires	No	Optional
Works with any site's form validation	Often rejected	Yes, ordinary address

For organisations

Shared aliases for procurement, recruitment or support inboxes that expire with the project. Per-supplier aliases so a breach at one vendor is contained to one address. All managed from the same console as the rest of your policy.