Add sql query for email

EMAILS.md

@@ -40,6 +40,8 @@ to be able to use it. (`add consult` only works when running through bash, for s
 
 Get a list of emails, and convert it to the format as specified by mmblanche's `-f` argument: one email per line. (For example, if you're working with a Google Form, you can get a Google Sheet of responses. Create a new tab -- **not** the tab where form responses are being collected!. Convert it into only one column of values such that all the values are emails -- strip out timestamps, header row, and the like. Then download this as a csv. If you'd like to export emails from our database, you can use a nice interface to download a table as a csv, and work with it.)
 
+If you have a terminal database client, you can instead run a command like `\copy (select email from api_user) to './emails.csv' with csv;`.
+
 Move this file to your Athena locker; you can use `scp` for this (example [here](https://unix.stackexchange.com/questions/106480/how-to-copy-files-from-one-machine-to-another-using-ssh)).
 
 Finally run mmblanche! For example, `mmblanche [mailman-list-name] -al [path/to/file]`. Likely you'll want to use `-al`, as it simply adds any emails in the file to the list, skips over duplicates for you, and doesn't delete anything otherwise.