You can register .ro domains and every Romanian extension (.com.ro, .info.ro, .org.ro, .store.ro and more), plus international ones such as .com, .net, .org, .e...
An MX record’s priority tells sending mail servers which mail server to try first for your domain. A lower number means a higher preference. If the preferred server cannot be reached, a server with a higher number may be tried.
Use the exact destinations and priorities supplied by your email provider. Do not add servers from different providers simply as a backup: they must be configured to accept mail for your domain. MX records do not automatically divide messages between two mailboxes or create copies of incoming emails.