Is a correct format of Email address?

A correct format of an email address typically includes a local part, an "@" symbol, followed by a domain name. For example, "username@example.com" is valid, where "username" is the local part and "example.com" is the domain. The local part can consist of letters, numbers, and certain special characters, while the domain must include at least one period and a top-level domain (like .com, .org, etc.). It's important to avoid spaces and certain special characters that are not allowed.