Mail bgahc com tw
It looks like you're trying to send an email to a Taiwanese address!
The format for an email address in Taiwan is typically in the format of "[email protected]", where "username" is the username chosen by the email account holder, and "domain.com.tw" is the domain name of the email service provider.
Here's an example of a valid Taiwanese email address:
In this example, "john.doe" is the username, and "msa.hinet.net" is the domain name of the email service provider, which is Hinet.
If you're trying to send an email to a specific person or organization in Taiwan, you can try using a Taiwanese email address in the format above.