If a few characters are missing, you can try recovery software. However, since you're asking for an email, based on my experience this is fake. Let me guess: you'll ask for money?
For the slight change this is real: You should NOT send a private key with 5 BTC to a random stranger. But hey, if you really want to, feel free to email it to me and I'll to take a look:
Don't send private keys from a standard email that doesn't encrypt messages.
The easiest way to send private keys (or seed words, depending on your wallet) is if you
create a
Protonmail account. My email:
LoyceVswitzerland@protonmail.com
This way, the email has end-to-end encryption and should be secure. There's of course always the risk of your (or my) computer being compromised.