Is [email protected] is this a valid E-mail address?

Question

someone send me a malicious E-mail with such a E-mail address is this valid? can I track this email address?

Answer 1

There are numerous challenges here, some legal, some technological, some timing, and so on.
There are exceptions (sometimes the SMTP headers tell you something useful), but in general no. SMTP (and a lot of other stuff) was built on the trust model of "Look at this wonderful, open system! Here's how you get online, just follow these instructions...we just know you want to get the parameters right and never lie to us..." -- and then spammers do.

Answer 2

The only email that exists from sololearn is:
[email protected]
I wouldn't open any others.
If it's emails in general you're talking about, the end if the email is a domain suffix. Its valid I guess, but im not an expert by any means in this area