How to Create Proton Pass Aliases 2026: Even Replies Stay Private

A spare address for every site that asks for your email.

I created my Proton Pass aliases in the Chrome extension. Each step below is one I clicked through, with my inbox at the other end.

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Before You Start

Tool	Proton Pass
Time to complete	Under a minute
Difficulty	Very easy
Plan required	Free

Proton’s business plans add an admin panel; this guide covers the personal plans.

How to Create Proton Pass Aliases: Step by Step

Step 1: Create an Alias Inside a Sign-Up Form

On any site’s sign-up form, click the empty email box and pick “Hide my email” (1). Proton Pass fills in a new alias named after the site. Your alias is ready, so skip to step 4 to read its mail, or read on if you have no form open.

Step 2: No Form? Use Proton Pass’s Alias Menu

Open the Proton Pass extension and click “+” at the top right. In the “Larger window” view from the extension’s menu, shown in the picture, that button reads “Create item” (1). Choose “Alias” (2).

Step 3: Name the Alias and Create It

Give your alias a name in the “Title” field (1). Proton Pass builds the address from it under “You are about to create”; to pick a different address, click the cog beside it. Click “Create alias” (2); once it’s saved, you can copy the new address by clicking it under “Alias address”.

Step 4: Read Mail Sent to the Alias

Open the inbox of the address you signed up to Proton with, where your aliases forward mail by default. Mail sent to the alias arrives from a Proton address with the sender’s address spelled into it. My first test landed in “Spam”, so check there once.

Step 5: Reply From the Right Address

Reply from your email app as usual, but check that “From” shows the address you signed up to Proton with. The other person got my reply from the alias address.

⚠️ Sent from any address other than the one you signed up to Proton with, even a second address in the same inbox, the reply is blocked.

Step 6: Switch the Alias Off

In Proton Pass, open the alias and click the switch beside its address. Proton Pass says “Alias successfully disabled”, the field reads “Alias address (disabled)”, and a test email I sent afterwards never arrived. Click the switch again to turn it back on.

Tips to Get Better Results

Every email Proton Pass forwarded to me showed the alias it was sent to. An alias made on a sign-up form is named after the site, so the alias on each email tells you where the sender got your address.

The “Activity” line under each alias counts what it handled; on Pass Plus, mine read “1 forward • 1 reply • 0 blocks” after the test.

Common Mistakes to Avoid

Replying From Another Address in the Same Inbox

My email app sent one reply from a second address in the same inbox, and Proton blocked it, saying “sending from this alias only works from alias’s owning mailboxes”. Under “From”, pick the address you signed up to Proton with. Proton’s notice also offered an “Allow” button for the second address, which I didn’t try.

Frequently Asked Questions

Final Thoughts

Your Proton Pass alias now takes a site’s mail and lets you answer it in private. The one catch is that each reply has to be sent from the address you signed up to Proton with.

For what Free and Plus each give you, read my Proton Pass review.

Evidence verified: October 2026.