How to sand a mail in gmail

I think there may be a bit of confusion here!

You can't actually "sand" a mail in Gmail, as sanding is a physical process used to smooth out rough surfaces, and emails are digital messages.

However, if you're asking about how to edit or format a message in Gmail, here are some tips:

1. Reply to a message: To respond to a message, click on the reply button (represented by a arrow pointing to the left) next to the sender's name.
2. Edit a message: To edit a message, click on the three vertical dots next to the reply button and select "Edit" from the dropdown menu.
3. Format text: To format text in a message, you can use the formatting options available in the compose window. These include bold, italic, underline, strikethrough, and font size changes.
4. Add attachments: To add attachments to a message, click on the paperclip icon in the compose window and select the file you want to attach.
5. Use Gmail's built-in editing tools: Gmail has a range of built-in editing tools, including a spell checker, grammar checker, and a tool to help you format your text.

If you have any specific questions about using Gmail or editing messages, feel free to ask and I'll do my best to help!