Chris G wrote:
In the case of that comma, Thunderbird would have alerted you to an 'illegal' character in the address and it would have refused to send it.
That's all one usually needs but Evolution doesn't help.
Which is why I said 'thanks for the warning'. I was going to try Kmail, but I'm told (by staff at my ISP) that the new version is not an improvement on the old one - quite the reverse in their opinion.