Fastmail offers disposable email addresses (Masked Email addresses) on its fastmail.com domain: https://www.fastmail.help/hc/en-us/articles/4406536368911-Maske

Fastmail offers disposable email addresses (Masked Email addresses) on its fastmail.com domain: https://www.fastmail.help/hc/en-us/articles/4406536368911-Masked-Email https://www.fastmail.help/hc/en-us/articles/4406536368911-Ma... Fastmail does have undisclosed limits, however: > If you're having trouble creating new Masked Email addresses, please note that we have limits on how many new Masked Email addresses can be created within a certain amount of time to prevent abuse. It would be good to see other email services offer a similar feature.