We do not generally accept service of documents by email. Our email footers make this clear. This is because emails can go missing or unread and we can't afford to miss documents served on us. If you want to accept service by email, then let the other side know. When doing so you must be clear as to what documents (list them by name) can be served and to what email address it must be sent and how it must be marked. You must require transmission to at least two Keystone email addresses to constitute good service. You must make this clear to the other side in advance. The COLs can be the second recipient if you wish. You must give a longstop date beyond which we won't accept service by email.
The default position is as per CPR PD 6A paragraph 4 (there is a similar provision in FPR6). Express consent is required for valid service of documents to be effected by email. However, express consent is deemed to be given where a lawyer/firm supplies its email address on a statement of case and/or on a response to a claim filed with the court. The position on application notices is not clear, but for safety we should assume that the provision of an email address in an application notice also is deemed express consent.
We should therefore not supply an email address in: