Build, test, and debug regular expressions
This regular expression attempts to match and capture standard .com email addresses, including common alias formats using plus signs or dots in the local part. It enforces a specific structure for the domain, strictly expecting either a single word domain or a subdomain structure where the second-level domain is exactly two characters wide. It is designed for multiline text extraction but may be too restrictive for validating all standard email formats due to its strict domain rules.