You can search based on keywords that you type into the Search box. All of the messages that contain those keywords in any field are returned.
Alternatively, you can filter messages that are returned based on specific criteria.
Available filtering options are:
Searches for messages from a specific user.
Searches for messages to a specific recipient.
Searches for messages whose Subject field contains the keyword.
Searches for messages within a specific folder.
When this option is selected, only messages that include attachments are returned in the results.
Searches for messages that are greater than or less than a size that you specify. You can specify the size in KB, MB, or GB.
Searches for messages whose body field contains the keyword.
You must have content indexing enabled to use the Contains search.
Searches for messages that were received within the selected time range. You can select: