日常生活、工作中常用、常见的那些邮箱，关键还是免费的。
即有国内头牌的网易、腾讯、阿里，后起之秀完美系的邮箱
还有海外巨头Gmail、Outlook、GMX、Zoho
更有Protonmail、Tutanota、Mailfence等安全邮箱
……
国内
163.com: https://mail.163.com/
126.com: https://mail.126.com/
Aliyun.com: https://mail.aliyun.com/
QQ.com: https://mail.qq.com/
完美邮箱: https://www.email.cn/ · https://www.88.com/ · https://www.111.com/
海外
AOL.com: https://mail.aol.com/
Gmail.com: https://www.google.com/gmail/
GMX.com: https://www.gmx.com/
Mail.com: https://www.mail.com/int/
Outlook.com: https://outlook.live.com/
Yahoo.com: https://mail.yahoo.com
Yandex.com: https://mail.yandex.com/
Zoho.com: https://www.zoho.com/mail/
加密
A/I: https://www.autistici.org/
Cock.li: https://cock.li/
Disroot.org: https://disroot.org
Mailfence.com: https://mailfence.com/
Mailo: https://www.mailo.com
Protonmail.com: https://protonmail.com/
Riseup.net: https://riseup.net/
Tutanota.com: https://tutanota.com/
Vivaldi.net: https://webmail.vivaldi.net/
临时
CS.email: https://www.cs.email/
GuerrillaMail.com: https://www.guerrillamail.com/zh/inbox
Moaktmail: https://www.moakt.com/zh
马甲
Abine Blur: https://abine.com/
AnonAddy: https://anonaddy.com/
Duck.com: https://duckduckgo.com/email/
Firefox Relay: https://relay.firefox.com/
LockrMail: https://lockrmail.com/
SimpleLogin: https://simplelogin.io/
暗网
Elude.in: http://eludemaillhqfkh5.onion/
OnionMail.com: https://onionmail.org/
其它
My.com: http://mymail.my.com/
Pingly.com: https://pingly.com/