Could You Please Send Me Meaning?

@binabeparijyp can you please send me the details is normally used when asking for further information about something, normally an event. For example, 'I heard that there's a party at Helen's tomorrow, can you please send me the details?'.

Can you please or could you please?

Both are correct. The first is more direct, and the second is more polite. Could you please . . . gives slightly more room for refusal than Can you please . . .

Can you please send me or could you please send me?

All are grammatically correct. Both are fine grammatically, but it appears that you are aiming for a relatively formal setting in which case "Could" is slightly more formal-sounding. Neither would be incorrect, however.