Inbox When Ready does that as part of your browser, but for email only — specially Gmail. In case you have A further provider, You'll have to appear somewhere else. It’s best not to use your throwaway email address for private communications or to repeat vital details someplace this https://chromewebstore.google.com/detail/temp-mail-pw-disposable-t/aidndodkpjkakjdhhmkkmjgehflbjbae