title: Append a new line in a Outlook mailitem html body
body: <p>I need some help formatting text in a mail item html body.
  I want to add more messages in the mail body but on all messages on different lines. 
  It may be obviously easy but idk I have a lapsus or something.</p>
  
  <p>Format I want:</p>
  
  <pre><code>-Message.
  -Message.
  -Message.
  </code></pre>
  
  <p>Format I get now:</p>
  
  <pre><code>Message,Message,Message.
  </code></pre>
  
  <p>Code:</p>
  
  <pre><code>StringBuilder infoMessage = new StringBuilder();
  foreach (string element in form.InfoMessages)
  {
  infoMessage.AppendLine(element);
  }
  mailItem2.HTMLBody = infoMessage;
  </code></pre>
  
  <p><code>InfoMessages</code> is a <code>List&lt;string&gt;</code></p>
  
  <p><strong><em>Edited for a better understanding</em></strong></p>