If the order says served on counsel served upon OC and CC 7 days prior then presumably it should be written and delivered 7 days prior. If the email was sent and received 7 days prior then you can argue no surprise to opposing counsel since the document was also mailed and hope the Judge does not penalize you.
If you filed 6 days prior in writing and the Judge accepts then no real reason for verbal proposed scheme which is generally unacceptable for obvious reasons. Much of this depends on which juristiction you are in, which Judge you have and whether the Judge believes your reasons for not meeting you deadlines. Saying you didn't know doesn't usually get you very far with most judges.
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