Setting the Auto Download Limit in Mailbird allows you to customize and control what gets downloaded to your computer. A lot of times you may not want to download every file or attachment that comes through your inbox.

In this case you would set the Auto Download Limit to the lowest setting, that way a file or attachment is only downloaded if you do it manually. This is also great for those who are concerned about internet usage, and for those who prefer to download manually if the file it too large.

Here's how to adjust the Auto Download Limit in Mailbird:

1) Go to the menu in the top left corner of the main window.

2) Select "Settings"

3) Click the "Advanced" tab

4) Use the slider from left to right to adjust the Auto Download limit. This automatically downloads attachments that are smaller than the chosen size.