Not a lawyer, but I know the position in the UK is pretty simple and much the same.
The purpose of someone like Docusign is to provide a trusted third party to provide evidence.
For most purposes GPG signed email (or anything else with a similar signature) would work perfectly well provided you could prove who the keys belong to. In fact it would be better than DOcusign who can (from the few documents I have signed) ultimately only really show they sent an email with a signing link to your email address.
The last one from them has a warning:
"Do Not Share This Email This e-mail contains a secure link to DocuSign. Please do not share this e-mail, link or access code with others."
Not a lawyer but I do deal with contracts under English law day in day out for my day job.
Docusign always saves the IP addresses and timestamps for any signatures. In addition it can be set up to require 2FA prior to accepting a signature - eg our lawyers will set it up to require an SMS 2FA confirmation and I've heard them say that this is a hard requirement for deeds as opposed to simple contracts (tho whether that's down to law firm policy, Docusign policy or court precedent I don't know).
The purpose of someone like Docusign is to provide a trusted third party to provide evidence.
For most purposes GPG signed email (or anything else with a similar signature) would work perfectly well provided you could prove who the keys belong to. In fact it would be better than DOcusign who can (from the few documents I have signed) ultimately only really show they sent an email with a signing link to your email address.
The last one from them has a warning:
"Do Not Share This Email This e-mail contains a secure link to DocuSign. Please do not share this e-mail, link or access code with others."