The contact bubble can be used to send an email to me.
However, if you have a certain email provider, that email may never reach me.
That's because the contact form puts your email address as sender, and some email providers don't allow this, because you are sending it from this site.
This means your message never reaches my inbox.
Affected email providers are (there can be more): AOL, Yahoo (also ymail, rocketmail, yahoo.co.uk), Comcast, Verizon.net, BT
I'll update the contact bubble code to send it from our own email address to solve this.