olemus
brauseri kaudu kasutatav
veebipõhine elektronpost, mille klient
on teostatud veebiserveril töötava
veebirakendusena

Wiktionary:
a service for sending, receiving, and/or storing email, usually on a remote web server, in such a way that it is accessible through a web browser
Hotmail, Yahoo! Mail and Gmail are well-known webmail services.

ülevaateid
https://www.techopedia.com/definition/5410/webmail

https://difference.guru/difference-between-an-email-client-and-webmail/

https://en.wikipedia.org/wiki/Webmail

https://www.computertechreviews.com/definition/webmail/amp/

https://yoursite.com/what-is-webmail/

turvalisus
https://www.symantec.com/connect/blogs/webmail-security-and-associated-best-practices

https://www.consumerreports.org/cro/news/2013/03/4-reasons-not-to-use-webmail/index.htm