UK & European users - "Mr" or "Mrs" in the E-mail display name?

[Ted Pack]

Whenever I get an e-mail from "Mr Thurston Banks" or "Mrs. Emma Roberts" I know it is from some scam artist in Nigeria. Here in the USA, none of my e-mail correspondents use any title in their display name, with two exceptions - ministers use "Rev" and officers in the armed services and Salvation Army will use their rank when they are writing from their work e-mail account. The rest don't use "Mr", "Mrs". I know a couple of physicians from high school, and they don't use "Dr".

I wondered if it was common to use "Mr" or "Mrs" in your e-mail display name in the UK or Europe. The only time I can think it would matter would be if your name could be male or female; "Pat" is the most common example in the USA.

Related question - have you ever corresponded with someone who was "Sir John Smith" or better - a Duke or an Earl? Did they use it in their display name?
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It would help me if you put your home country. Nothing more revealing, just your home country. Thanks.