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
Mu4e - Starting with version 0.9.8, mu provides an emacs-based e-mail client which uses mu as its back-end: mu4e.
Mailo - Mailo is an email client where you can send and receive emails to and from anyone with an email address.
Mutt - Mutt is a small but very powerful text-based mail client for Unix operating systems.
Horde - Horde Groupware is a free, enterprise ready, browser based collaboration suite.
Mailspring - Mailspring is a mail client for Mac, Windows and Linux.
HEY - Email at its best, new from Basecamp.