Using 1Password

Use 1Password to create and manage Masked Emails in Fastmail

Learn how to set up and use Masked Emails, unique email aliases that keep your email address anonymous.

With 1Password and Fastmail, you can create and manage Masked Emails for each of your online accounts. Each Masked Email is a unique, randomly generated email address you can use to sign up for a new account to keep your personal address private. You decide when you want to stop receiving email from it.

Set up Masked Emails

Before you can use Masked Emails, you’ll need to sign up for a Fastmail account and set up 1Password in your browser. Then follow these steps:

  1. Sign in to your account on 1Password.com.
  2. From the sidebar, select Integrations > Fastmail.
  3. Follow the onscreen instructions to connect both accounts.

Now you can use 1Password to create and manage Masked Emails in your browser.

Use Masked Emails

To create and fill a Masked Email, visit a website where you want to create an account. On the sign-up page, select the email address field > Create Masked Email. Then select Fill Email.

An email field with Create Masked Email selected and a window with the Masked Email active.desk2652@fastmail.com and options to Fill or Regenerate.

If you have multiple Fastmail accounts set up with 1Password, you can choose which account to use. To generate a different Masked Email, select Regenerate.

From now on, Fastmail will deliver all messages sent to the Masked Email to your Fastmail inbox.

After you select Fill Email, enter the rest of the details the website requires. Use 1Password to create and save a strong password for the login.

Manage Masked Emails

If you receive unwanted messages at a Masked Email, you can block incoming email for it.

  1. In your browser, select the 1Password icon and enter the Masked Email you want to block in the search field. You’ll see the Login item details.
  2. Select the down arrow next to the email address.
  3. Adjust your forwarding settings:
    • To turn off forwarding, select Block Incoming Emails.
    • To resume forwarding, select Unblock Incoming Emails.
1Password in the browser open to the login item for active.desk2652@fastmail.com with the option to Block Incoming Emails highlighted in the dropdown next to the Masked Email.

To block incoming email to the alias from Fastmail, select Settings > Masked Email.

Get help

Creating and managing Masked Emails requires 1Password in your browser.

To delete a Masked Email, sign in to your Fastmail account and select Settings > Masked Email , then Delete.

To stop using your Fastmail account with your 1Password account:

  1. Sign in to your account on 1Password.com.
  2. Select Integrations in the sidebar.
  3. Select Active and choose the Fastmail email you want to remove.
  4. On the settings page for the account, select Deactivate.

Learn more


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