The relative sizes of the free email providers in Europe are
Hotmail/Outlook․com: 108 Million
GMail: 74 M
Yahoo!: 44 M
Mail․ru: 42 M
Yandex: 25 M
The full report is at
this link on comscore.comFree email providers are highly abused by scammers in such crimes as the Nigerian 419 frauds.
Thankfully, most of the large free email service providers (ESPs) are quick to suspend such criminal abuses, which break their terms of service.
When abuser accounts are suspended, countless scams in progress are nipped in the bud, and less crimes are committed. The major ESPs are conscious that it is a competitive marketplace, even for free services. They know that they have to protect their reputation for integrity, and nobody wants to gain a reputation for being a safe harbor for criminal fraud.