0"Can" sounds better with "will." "Could" would sound better with "would," but I think, technically, you can mix and match, with some attendant difference in meaning possible .0-
1i00It will be greatly appreciated if you can confirm ... 02i00 (a little 'stronger', 'insistent')02br 02br 01i00It would be greatly appreciated if you could confirm ...02i00 (a little 'softer', 'polite')02br 00CJ 0-