This Practice Note addresses electronic filing (e-filing) in federal district court using the Case Management/Electronic Case Filing (CM/ECF) system. It addresses initial considerations for e-filing, including reviewing relevant rules and orders and confirming counsel's CM/ECF access. It also explains who can e-file, what to e-file (including common e-filing exceptions), when to e-file, and how to format documents for e-filing, including organizing exhibits and making redactions.