you could set up email accounts as forwarders to a single account. And on the email client add these accounts as aliases so you can reply with them. So you get a single unified view of emails as well as ability to reply with the one you want.
Just the other day I was thinking if i could run a mini games server on a raspberry pi. All the flash games growing up in a local device would be pretty darn awesome for the kids. would this help accomplish that?
This is why opensource developers get burnt out. If you don't like it, fork it. Stop shoehorning what you want on other people's project, especially for petty things like this.
you could set up email accounts as forwarders to a single account. And on the email client add these accounts as aliases so you can reply with them. So you get a single unified view of emails as well as ability to reply with the one you want.