The only error I get with: claws-mail --debug is about spamassassin -- Example of rude top posting:
A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? A: No. Q: Should I leave quotations after my reply? Saluton, Quiliro 0987631031
