The reverse-alias hack
SimpleLogin and addy.io, like DuckDuckGo, make you hand-type an encoded address like you_at_gmail.com_them@duck.com in your own mail client. DuckDuckGo itself calls the syntax a stopgap.
New · a Plus & Pro feature
Send email from an alias.
Not just receive it.
Emcognito already hides your real address on every message that lands in your inbox. Compose from an alias closes the loop: open a simple web form, pick an alias, and send brand-new mail as that alias — no reverse-address tricks, no mail-client setup. Their replies come back to you as ordinary forwards.
Included with Plus and Pro. Replying to forwarded mail stays free on every plan.
Everyone else makes sending the hard part
Emcognito is the only standalone alias service where sending from an alias is a plain web form — not an address hack. See the full service comparison.
The walled garden
Apple Hide My Email can compose from an alias — but only inside Apple Mail, one recipient per message, if you pay for iCloud+. Fastmail only works from a paid Fastmail mailbox.
Can’t at all
Firefox Relay can’t send new mail from a mask — it’s a years-old open request. 33mail users have asked since 2013. The feature simply doesn’t exist.
Three fields. One send.
Pick the alias
Choose any active alias as your From address. The recipient sees only that alias — your real inbox never appears in the message or its headers.
Write it
One recipient, a subject, and your message. That single-recipient rule is deliberate — it’s what keeps alias mail landing in inboxes instead of spam folders.
Send — and get the replies
We send it as your alias and drop a copy in your inbox for your records. When they reply, it forwards to you like any other alias mail. The thread just works.
When you need to send first
The vendor wants it from the alias
A landlord, bank, or support desk has your alias on file and expects mail from that address. Now you can start the thread without exposing your real one.
Marketplace & classifieds
Reach out to a seller or buyer anonymously and keep the reply thread alive — replies forward straight to your inbox, no leaked address.
Anonymous, but reachable
Unlike throwaway one-shot anonymous senders, mail you compose here can actually receive a reply — because it’s backed by a real, persistent alias you control.
Why it’s a paid feature
Free outbound sending is how alias services get their mail servers blocklisted — one bad actor poisons deliverability for everyone. A card on file is the single strongest control against that, so composing is Plus and Pro only. It’s the same reason we keep replies free but gate brand-new sends: the people already paying are the people whose mail we can vouch for. Your good deliverability is the product.
Questions
Does the recipient ever see my real email address?
No. We build the message on our servers with your alias as the From address and strip anything that could leak your real address, IP, or device. They see only the alias.
Can they reply to me?
Yes — that's the point. Replies go to the alias and forward to your inbox like any other alias mail, so the conversation continues without exposing your real address.
Why can't I do this on the Free plan?
Sending brand-new mail is the part bad actors abuse, and abuse gets mail servers blocklisted. Requiring a paid card keeps deliverability clean for everyone. Replying to mail forwarded to you stays free on every plan.
How is this different from SimpleLogin, addy.io, or Firefox Relay?
Those either make you hand-type an encoded reverse-alias address in your own mail client, or — like Firefox Relay — can't send new mail from an alias at all. Among standalone alias services, Emcognito is the only one we know of where it's a plain web form.
Start sending from your alias
Unlimited aliases on every plan. Compose from any of them on Plus and Pro.
Or compare every plan on the pricing page — unlimited aliases and free replies are on every tier, including Free.