How do I get my POP3 email to download only text, but not images?

How do I get my POP3 email to download only text, but not images?

I send out emails with pictures inserted into the body of the email. But when people answer me, they hit the reply button, which sends all my pictures back to me, and it takes forever to download all the replies, each one being full of the same pictures I sent out. How can I set up my Zoho account or my POP3 client, to keep from getting my own pictures back, when people reply to me? I use Thunderbird, to interface with Zoho POP3 service.