Feature Request: Support for other Masked Email providers

P.S. Just to head off something: Passkeys are cool and all, but what percentage of websites currently support them? If I want to retain my privacy right now on the vast majority of websites, passkey support isn't helpful or relevant.

1Password evidently understands the benefits of masked email (given the Fastmail integration), but it's bizarre that Fastmail has a monopoly as the only supported provider. This isn't the case with the rest of the market and the messaging I've read here isn't transparent and comes across as user hostile, or at the very least avoidant.