app/views/user_mailer/signup_email.html.erb
<!DOCTYPE html>
<html>
<head>
<meta content='text/html; charset=UTF-8' http-equiv='Content-Type' />
</head>
<body>
<center>
<table width="580" cellspacing="0" cellpadding="0" border="0" style="font-family:arial,'lucida grande','lucida sans','lucida sans unicode',tahoma,verdana,sans-serif;background:#FFF;border:2px solid #eee;padding: 10px 0px;background-color:#fff;text-align:left;">
<tr>
<td valign="top" style="padding: 15px;font-size: 14px; color: #000000; background-color:#ffffff;">
Hi <%= @user.name.titleize.strip %>,
<p style="margin:20px 0px;"><%= "Here are your login details." %></p>
<p style="margin:10px 0px;color:#CC3333; font-weight: bold; font-size: 18px;"><%= "Account Information" %></p>
<p style="margin:10px 0px;"><%= "Login ID" %>: <b><%= @user.email -%></b></p>
<p style="margin:10px 0px;"><%= "Password" %>: <b><%= @temp_password -%></b></p>
<br/>
<p style="margin:20px 0px 10px 0px;">
<b><%= "For questions and support:"%></b>
</p>
<p style="margin:20px 0px 10px 0px;">
<%= 'To help you get started quickly with Oneclick, we encourage you to read our ' %>
<a href = 'http://oneclick.com/help'>help blog</a>
</p>
<p style="margin:20px 0px 10px 0px;">
<%= 'Remember, you can always email us with your questions and feedback at support@oneclick.com or visit us at our contact us page for more information on support.' %>
</p>
</td>
</tr>
<tr>
<td style="padding: 10px 15px 15px; font-size:16px;background:#fff;">
<p style="margin:0px 0px;">
<%= "Thanks" %>,<br>
The OneClick Team<br>
</p>
</td>
</tr>
</table>
</center>
</body>
</html>