auth/app/views/devise/mailer/confirmation_instructions.html.erb
<p>Hello <%= @user.name %></p>
<p>You're receiving this email because a PushType account has been created for you.</p>
<p>To get started, confirm your account and set your own password by clicking the link below:</p>
<table>
<tr>
<td class="padding">
<p><%= link_to 'Confirm my account', push_type_admin.user_confirmation_url(@user, confirmation_token: @token), class: 'btn-primary' %></p>
</td>
</tr>
</table>