Scam email address?

[temp20220516f]

I have sold an item and was told they'd sent the money. However, an email came through to say the funds won't be released until I have proof of postage. The address it is from is from a gmail address- is this a legitimate address?

[sharpiemarker]

@temp20220516f 

Scam. PayPal does not use gmail!

[temp20220516f]

Thank you - reading it back I realise how thick I look for even having to ask