How much e mail sites are there

There are numerous email service providers (ESPs) and email hosting services available, making it difficult to give an exact number. However, I can provide you with a list of some popular email services and estimate the number of email sites:

1. Web-based email services:
   • Gmail (over 1.5 billion users)
   • Yahoo Mail (over 250 million users)
   • Outlook.com (over 400 million users)
   • AOL Mail (over 20 million users)
   • ProtonMail (over 20 million users)
   • Tutanota (over 2 million users)
   • Mailfence (over 1 million users)
   • Zoho Mail (over 10 million users)
   • Yandex Mail (over 100 million users)
   • Mail.ru (over 100 million users)
2. Email hosting services:
   • Bluehost (over 2 million users)
   • HostGator (over 1 million users)
   • GoDaddy (over 1 million users)
   • 1&1 Ionos (over 1 million users)
   • DreamHost (over 500,000 users)
   • SiteGround (over 500,000 users)
   • Hostinger (over 500,000 users)
3. Custom email services:
   • Many companies and organizations have their own custom email services, such as [name]@company.com.
   • These services are often provided by the company's IT department or a third-party email hosting provider.

Estimating the total number of email sites is challenging, as it depends on how one defines an "email site." However, considering the above list, it's safe to say that there are:

• Over 5 billion email accounts (based on the user base of the top web-based email services)
• Over 10 million email hosting services (based on the number of users of popular email hosting providers)
• Millions of custom email services (based on the number of companies and organizations that have their own email services)

In total, there are likely hundreds of millions to billions of email sites, making it one of the most widely used and ubiquitous forms of online communication.