[Grammar] could you please to correct grammar ?

[hoanglan82vn]

" I will send the sample to you by today. Could you please check again below information
- recipient's name:..
Company:..
Address: ....

Please let me know once you receive the sample"

 

[Matthew Wai]

I will send you the sample by today. Could you please double-check the information below?

Recipient's name:
Company:
Address:

Please let me know once you have received it.

 

[emsr2d2]

You can't send someone something "by today"! The time period has to refer to when you're going to send it, not when they're going to receive it.

I sent the sample yesterday. You should get it sometime today.
I will send the sample sometime/later today. You should get it tomorrow/Saturday (or whenever).

 

[Tarheel]

Sample

Perhaps:

I will send you the sample today. You should get it tomorrow or the next day.