e4ward might be a bit more popular than tmpmail. We know about 1 link to it since March 2021 and only 1 link to tmpmail. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
You can find it here: https://github.com/sdushantha/tmpmail. Source: over 2 years ago
If you don't want to set it up yourself, e4ward is built to do what u/irieken is describing. You can generate random aliases with a note for each address. I've caught a bunch of people giving my email to someone. Source: about 3 years ago
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