How to show sending message progress?

[zhangxi...@gmail.com]

I have banned automatic mail sending, and can only send mail manually. I can only send one mail at a time. How can I get the current percentage of mail sending progress? 

Current percentage = size sent/total message size

[cketti]

Are you working on something that you plan to contribute to K-9 Mail? If
so, please open an issue where you explain what exactly you're trying to
accomplish. It'll be easier to help if we have more information.

If you're not planning to contribute your change to the open source
project, please understand that it's unlikely someone will help you out
for free. But if you're willing to pay for consulting feel free to email
me directly.