Evolution signature editing

I don't use the Evolution mail client in Ubuntu very much, except when a web page generates an e-mail for me and doesn't let me use GMail instead. I figured, while I was 'tweaking' under the hood, I'd experiment with the Signatures. I created one, but didn't like it, so I wanted to open the Signature editor. But wait! There isn't one. Evidently it has been this way for many years. Instead, you have to go to your ~/.evolution/signatures directory and manually edit the HTML in the files there.

Whilst on the subject of GMail and Evolution, I had to configure the outgoing mail server, since mail wasn't leaving the Outbox properly. I had to use

smtp.gmail.com:587

for the smtp server (I tried port 465 too, but it didn't work for me??), and make sure to use the @gmail.com after your user name in the user name field.