Some gmail advanced search tips which can be useful if you are heavy gmail user.
- File all unread messages in inbox
is:unread in:inbox
- Find a thread which some keyword where you have involment
from:me [keyword]
This is pretty handy to find some thread where you vaguely remember the subject. - The thread has attachment
has:attachment
- Finding big emails (e.g. email of size > 1M)
size:1M
These are some of the tips I use often. There are many more tips at Gmail help official page in case you want to read more.
