Use these tips to search through your email at either Gmail or LCMail. 

Who?
The most important search term most likely has something to do with who you sent an e-mail to, or who sent the message to you. By typing a word that you’re looking for and then amending the search with from: or to: you can narrow your search to specific people. For example, searching for e-mails about robots from John you could type:

robots from:John

Where?
One of my favorite advanced search features is the ability to snoop through different folders within your in-box. You can search just your in-box, trash or even your spam folder, if you’re so inclined. The way you do this is to type your search term and then add the words in: followed by the folder you hope to search. A simple example is searching for an e-mail about Viagra in your spam folder:

Viagra in:spam

What?
Another useful way to cull your in-box is being able to search for e-mails specifically with attachments. To do this, you can simply type a sender’s name and add has:attachment to the end of the search.

from:nick has:attachment

If you know the name of the attachment, you can search for that too:

filename:robots.txt

When?
Time is always of the essence with e-mails, and searching for them with dates can be incredibly useful. To do this in Gmail, you can simply add the words after: or before: followed by the date you want to search:

Jack's Birthday after:2010/05/01