I've noticed that Gmail has recently been incorrectly categorizing quite a few messages on this list as spam. I don't know if this problem affects others as well, but if you follow this list and don't want to miss any messages, you may want to consider creating a filter that prevents any messages from sympy@googlegroups.com from being marked as spam.
Aaron Meurer -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAKgW%3D6%2BepasuhJfOcLsgYDwyABdzz8r8ayv565kVvZW7PtFm%3Dw%40mail.gmail.com.