Using FEC Search Console for Gmail

When preserving a Gmail or G Suite mailbox using the Gmail API, it is possible to perform pre-acquisition searches to narrow down the data set. You can launch the FEC Search Console for Gmail by clicking the "Perform Pre-Acquisition Search" link as shown below.

Activating FEC Search Console

FEC Search Console allows you to execute your search query on the server side and preview the search results. Because FEC uses Gmail API, the search syntax and functionality are identical to those of Gmail search. In other words, the accuracy of the search results is dependent on the capabilities of Gmail search.

What You Can Search For

Pre-acquisition filtering can be a convenient way to filter messages using a long list of criteria.  You can refer to Google's documentation on search operators you can use with Gmail for a comprehensive list of search operators and syntax.

Here are a few examples to get you started:

  • Messages with a certain label — Example:  label:business
  • Messages from a specific sender — Example:
  • Messages sent after a certain date — Example: after:2017/01/01
  • Messages with a specific ID — Example:
  • Messages that are important or starred — Example: is:important OR is:starred (note that the Boolean operator OR is capitalized)
  • Messages with specific words near each other — Example: business AROUND 3 meeting (matches items where "business" and "meeting" are within 3 words of each other)
  • Messages that are unread and have a pdf attachment — Example: is:unread filename:pdf (multiple search terms are combined with an AND by default)
  • Messages containing an exact phrase — Example: "business meeting tomorrow"
  • Messages containing all specified terms; not necessarily as a phrase — Example: (lunch dinner)
  • Messages in any folder, including Spam and Trash — Example: in:anywhere
  • Messages that do not have a label — Example:  has:nouserlabels
Using FEC Search Console

Note: When referencing labels with spaces in their names, Gmail expects that the spaces be replaced with dashes. For example, you can search for all emails labeled "House Purchase" by using the query "in:house-purchase".

Boolean AND & OR Operators

When you use multiple search terms, Gmail search combines them with an invisible AND operator. In other words, the query in:inbox is:starred looks for items that are both in the Inbox, AND are starred.

If you would like to perform an OR search instead (e.g., when searching for messages that have a list of labels), you can include an explicit OR operator (capitalized) in your query. For example, searching for  in:purchases OR in:expenses would cause Gmail to look for messages that have either the "Purchases" or "Expense" labels. 

Example Searches

Example 1—Items that have the "Finance" label with dates after August 1, 2017 where the phrase "wall street" appears within 5 words of the word "mortgage":

"wall street" AROUND 5 mortgage after:2017/8/1 in:Finance

Example 2—Items that have either the "Apple" or the "Samsung" label with dates between July 5, 2016 and September 3, 2017 that contain the domains "" or "":

( OR (in:Apple OR in:Samsung) after:2016/7/5 before:2017/9/3

Example 3—Items from "" that contain the word "recipe" in their subjects that are newer than 3 months: subject:recipe newer_than:3m

Example 4—An item with a specific message ID:

Example 5—Items that do not have the "Work Product" label where the word "Apple" is found within 4 words of the word "Sonos" and "Apple" appears first (i.e., the proximity search is order sensitive):

"Apple AROUND 4 Sonos" NOT in:work-product

Saving the Search Query

Once you have finalized your search query, you can save it by using the "Save" button in FEC Search Console. This will close the search console window and activate your query. You will see a notice as in the screenshot below.

Search Query Activated

Clearing the Search Query

If you would like to clear the search query, you can click on the small (x) symbol next to the "Search Query Activated" text as shown in the figure above.

Limitations of Gmail Search

The search functionality built into Gmail and utilized by FEC is limited to the documents that Gmail is able to recognize and index. For instance, a proprietary CAD file unrecognized by Gmail, or files inside an encrypted file archive would not be indexed or searched. Similarly, if a file has no extractable text (e.g., a scanned TIFF image of a document), Gmail would not be able to extract text from it or index it.

Given the above limitations, it may be appropriate to use the Gmail search functionality in FEC to filter messages by their labels, or top-level message characteristics such as sender, recipient and subject content. Keep these limitations in mind if you plan to use this functionality to perform a blanket search intended to search all documents and their attachments recursively.