How do I prevent notmuch-show in Emacs from automatically following links in emails?

[Philip]

Hi,

  When I open emails in the notmuch-show mode on Emacs, it automatically
  follows links which are present in the email. For instance, it
  connects to various tracking objects included in the email. How can I
  prevent it from doing this automatically all the time? Is there a
  setting by which notmuch-show will not follow links in emails?

Thanks,
Philip