Thunderbird question: how do I reply, please?

Very simple request. I posted a question about logging in to server 'outlook.office365.com' from Thunderbird. I've now had a helpful answer from 'panoskol'. 1. How can I send a thank-you message, please? 2. More generally, how can I see my original question, and thread, if I want to? This is so I can see what movement there has been. As you might gather, getting into support forums is something I'm not good at. Are there general instructions somewhere? (Yes, I ought to know.) Any help appreciated. All good wishes, Roger Fern. --------------------------------------------------------------- Roger Fern, Newcastle upon Tyne. ---------------------------------------------------------------