/// <summary>
/// Get an <see cref="IMailService"/> instance.
/// </summary>
/// <returns>
/// An existing <see cref="IMailService"/> instance if available; otherwise a fresh instance.
/// </returns>
public IMailService GetMailService()
{
if (this.mailService == null)
{
this.mailService = new MailService(modId, mailManager);
mailManager.RegisterMailSender(modId, mailService);
}
return(mailService);
}