I have been trying to add a simple HTML link to my site's subscribe emails. Whenever I do this, the email system fails.
All I have so far is the default template with %blog_name% and %content% in it. I want to add this link underneath:
<a href="http://example.com">My website</a>
Once I add this code to the email template, emails are no longer sent to new subscribers and the "send test email" button no longer generates an email. If I delete the link, after about 20 minutes the emails start working again.
Is this a known problem? I am using WP v3.4.1.