disposable email
You need to add the ability for a user to delete the entirety of their disposable email address. The instructions for creating a disposable email address are not clear that creating a "base name" is a one-time process, and not something you do each time you create a disposable email address. I have an email address I have had for about 20 years, and you are telling me the ONLY way to change a mistakenly made "base name" is to delete my Yahoo account and make a new one. Very poor.
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For information on how to remove your disposable email address, please go here: https://help.yahoo.com/kb/SLN15953.html