Understand where and when 'mean well' is appropriate to use; it's not suitable for formal situations. He meant well by leaving that note, even if it seemed casual for a work setting.
Pro Tip 2/3
Unintended Outcome
'Mean well' often implies that despite good intentions, something didn’t turn out well. She meant well by helping with the project, but it caused more confusion.
Pro Tip 3/3
Sincerity Matters
Using 'mean well' suggests sincerity in one’s intentions, regardless of the outcome. My friend broke my vase but he meant well, offering to fix it.