I inserted a plain text widget in my footer with my contact details (company name, physical address and email address) but did not think of linking my email. Being a beginner and not knowing which php file or where I should modify, is there a place in the Theme Options where I can code this link?
If you are not familiar with HTML, you should visit some reference sites and tutorials.
The base of an HTML link tag is below, but there are optional attributes you can add. Just edit your text widget to add the proper HTL code like below, replacing LinkURL by the full url of the link to be used