How to open rpmsg file in yahoo mail

I think there may be a bit of confusion here!

RPMSG is not a file format commonly used in Yahoo Mail. RPMSG is actually a file extension used by the RPMSG (Remote Procedure Call Message) protocol, which is a communication protocol used in some embedded systems and automotive applications.

If you have a file with the.rpmsg extension, it's unlikely that you can open it directly in Yahoo Mail. Yahoo Mail is an email client that can only handle email messages in standard formats like HTML, plain text, and attachments like images, documents, and audio files.

If you're trying to open a file with the.rpmsg extension, you may need to use a specialized tool or software that supports the RPMSG protocol. However, I couldn't find any information on a specific tool or software that can open RPMSG files.

If you could provide more context or information about where you got the.rpmsg file and what you're trying to do with it, I may be able to help you better.