Based on our record, InstAddr seems to be more popular. It has been mentiond 3 times since March 2021. 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.
I'd recommend https://m.kuku.lu/ for e-mails. You can choose your own username, password and also use 2FA and don't need to enter any additional information. I also use it for school mail. Source: about 1 year ago
You can get a .jp address at https://m.kuku.lu/. Source: over 2 years ago
InstAddr for temp email without losing the email account. You choose when to delete it. Source: almost 3 years ago
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