Fastmail launches Masked Email privacy service that’s tightly integrated with 1Password

The Masked Email privacy service from Fastmail provides a better alternative to Apple’s Hide My Email service, comes with the option to use a custom domain, and is fully integrated into 1Password.

Fastmail Masked Email address
A Masked Email address generated from Fastmail in Google Chrome via 1Password’s browser extension

Fastmail is a full-featured privacy-focused email service provider that started in 1999. They are also one of my favorite services. I’ve used them for several years and have written about why I think they’re the best alternative to Gmail and iCloud.

On September 28, they announced a new email privacy service called Masked Email. The new service is similar to Apple’s Hide My Email service in that it creates unique and random email addresses to keep personal email addresses private. However, Masked Email has features that Hide My Email doesn’t.

Fastmail partnered with 1Password, which helped make Masked Email more robust than Apple’s service. Some of the unique features provided by Masked Email include:

  1. the option to use a custom domain
  2. the automated creation of new private email addresses via 1Password
  3. the option to create private email addresses with browsers other than Safari
  4. the ability to create private email addresses on operating systems other than macOS, iOS, and iPadOS

Masked Email is now available to all Fastmail accounts, and here’s how to set it up and use it with 1Password.

How to start using Masked Email with your Fastmail account

Masked Email is turned on for every Fastmail account. To access it, go to Settings > Masked Email.

Masked Email in Fastmail
Masked Email service in Fastmail

Click on the New Masked Email Address button and Fastmail will generate a new random and unique email address.

Masked Email address
Private email address created by Fastmail’s Masked Email feature

The new email address can be used immediately.

Masked Email addresses function the same as standard aliases and will be delivered to the Inbox like a regular message. The only difference is that messages sent using a Masked Email address display a mask icon in the Inbox.

Masked Email icon
Messages sent to Masked Email addresses display a mask icon in the Fastmail app’s Inbox

How to use a custom domain with Masked Email

Fastmail uses fastmail.com for Masked Email addresses, similar to how Apple uses icloud.com for Hide My Email. Unlike Apple, Fastmail provides the option to use a custom domain. As you may have noticed in the previous screenshots, I’m using the custom domain obfuscate.email.

To use a custom domain, you must first add it to your Fastmail account. Once it’s added, go to Settings > Domains, and go to the bottom of the page. Under Team Settings, select the domain you want to use with Masked Email.

Team Settings
Fastmail provides the option to use a custom domain with Masked Email

How to use Masked Email with 1Password

Fastmail partnered with 1Password to create a tight integration with Masked Email. To connect Masked Email with 1Password, navigate to Settings > Masked Email. Click the Connect to 1Password button.

Connect Masked Email to 1Password
Masked Email can be connected to 1Password

You will be prompted to log in to 1Password. After logging in, you will be sent to the Masked Email Integrations page. Click the Connect button.

1Password Masked Email Integrations page
Masked Email integration page on 1Password

Confirm the connection details and click on the Allow button.

Allow access to Fastmail
Option to allow 1Password to access Fastmail’s Masked Email service

If the connection is successful, the Integrations page will display the Fastmail Masked Email connection.

Successful Connection
1Password Integrations page showing that Fastmail Masked Email is connected

When you use a browser that has the 1Password extension installed and sign up for a new service, you will be prompted to create a Masked Email address. The screenshot below is what it looks like when you signup for a Figma account using Google Chrome.

Create Masked Email
1Password provides the option to create a Masked Email address in Google Chrome

Clicking the Create Masked Email… option displays the Create Masked email modal window. If you want a different alias, you can click the Regenerate button. When you’re satisfied with the email address, click the Fill Email button.

Masked Email address creation modal
Modal window with newly created Masked Email address

The Masked Email address will be entered, and after you generate a password, 1Password will save the new login details in the selected vault.

1Password login entry
1Password modal window for saving new login entry

Blocking Masked Email addresses

If the Masked Email address starts to receive spam messages, and unsubscribing doesn’t stop it or isn’t an option, Fastmail provides an easy option to block all messages from its app.

To block messages sent to the Masked Email address, click on Show details and then click on the Masked Email address. A contact record will appear on the right side of the app. Click on the Kebab menu and then click on Block. All messages to that email address will now be blocked.

Blocking Masked Email address
Blocking a Masked Email address from delivering messages to the Inbox

Fastmail and 1Password deals

If you’re interested in trying out Masked Email and don’t have a Fastmail or 1Password account, use these links for a Fastmail discount and a free trial of 1Password.


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Jon is the founder of Coywolf and the EIC and the primary author reporting for Coywolf News. He is an industry veteran with over 25 years of digital marketing and internet technologies experience. Follow @henshaw