JSFiddle - React, Tailwind, and code Playground

HTML

<table id="here" border="1">
    <tr><td>London</td><td>london@us.uk</td><td>aaa</td><td>aaa</td></tr>
    <tr><td>Manchester</td><td>manchester@us.uk</td><td>aaa</td><td>aaa</td></tr>
    <tr><td>Liverpool</td><td>liverpool@us.uk</td><td>aaa</td><td>aaa</td></tr>
    <tr><td>Ipswich</td><td>ipswich@us.uk</td><td>aaa</td><td>aaa</td></tr>
</table>

JavaScript

$("#here td:nth-child(2)").each(function() {
    var email = $(this).text();
    $(this).html(
        $("<a>").attr("href", "mailto:" + email).text(email)
    );
});