Earlier quoted context omitted.
In Europe, including the UK and EEA, there is the eIDAS regulation, which outlines the requirement for eSignatures (amongst other things). In order for a signature to be recognised, it has to meet one of three trust levels 1. Electronic signature: this is basically something that puts a distinguishing mark on a file. 2. Advanced electronic signature: these use cryptography according to the specifications set out in t…
Ultimately where this matters is if one party contests the validity of a contract. I'm not sure how it works in the EU, but in the US that would mean a court would ultimately make that decision. To that end, they could decide that two people agreeing in an email thread is enough. It's all about your risk appetite. However, notice that Google has not said they are compliant with any regulation.
https://www.theguardian.com/world/2023/jul/06/canada-judge-t...