[joshe]

You can just send a signed pdf over email. Perfectly legal.

Macs even have a terrific signature attachment feature in Preview (the default pdf viewer).

Docusign etc. just add version tracking and document management, but you can just back up email. Even at some scale. Docusign is like buying a picture frame for a document like a diploma, it looks a more official but doesn't change anything.

[ghaff]

It's also perfectly legal to just reply to an email "Looks good to me." That doesn't mean it's legally compliant for all use cases. Perfectly fine for others of course. Just print out and file the emails or save them in a folder.

[withinboredom]

Well. I guess it depends. An X is a perfectly legal signature, or a smiley face.

As long as all parties agree that it’s a signature.