Yopmail 1.0 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The software lies within Internet & Network Tools, more precisely Browser extensions. This free Mac app is a product of yopmail.
From the developer:
YOPmail’s free, quick and feature rich service guards you against spam, phishing and other online abuses. Protect your actual email, instead use YOPmail’s disposable one to sign-up wherever you want. YOPmail creates temporary inboxes of your choice instantaneously.
You may want to check out more software for Mac, such as Delete Flash Cookies, Subio or WiPhA Installer, which might be similar to Yopmail.