Understanding that filing via electronic means could cause undue hardship or significant prejudice for one or more parties, there is a way to request exception to or exemption from mandatory eFiling.
Pursuant to California Rules of Court, Rule 2.253(b)(4), a party may submit an application for exemption from eFiling.
Request for Exemption From Mandatory Electronic Filing and Service
Order of Exemption From Mandatory Electronic Filing and Service
Note: Self represented litigants (pro se parties) generally do not have to request an exemption from manadatory electronic filing as they are already exempted per California Rules of Court, Rule 2.253(b)(2).