Can you cross the vorder to send mail

I think there may be a bit of a misunderstanding here!

The "vorder" is not a real word or concept that I'm familiar with, and I'm assuming you meant to ask if you can cross the border to send mail.

To answer your question, it depends on the specific border you're referring to and the laws and regulations of the countries involved. In general, it is possible to send mail across international borders, but there may be restrictions, regulations, and requirements that need to be followed.

For example, you may need to declare the contents of your mail, pay duties or taxes, or comply with customs regulations. Additionally, some countries may have restrictions on what types of items can be sent through the mail, such as certain types of goods, liquids, or hazardous materials.

If you're planning to send mail across an international border, I recommend checking with the postal services of both the sending and receiving countries to ensure you comply with all relevant regulations and requirements.