Easier way to change the existing account email to Masked Email

@AndrewParker You can still generate masked emails directly in Fastmail and manually use them in 1Password, which would work the same except it will take a couple of extra clicks :)

When you sign up for a new website, 1Password will do the job for you, but when you want to change an existing login's email address, create a masked email directly in your Fastmail account and add it to your login entry in 1Password.