I am talking here of Sonic's default webmail, Roundcube. Webmail settings should remain the same from browser to browser, right? Doesn't make any sense if they don't. In Firefox, everything is set up to my satisfaction, but when I load Sonic's webmail in the Opera browser, all the settings are gone, including my 20 or so filters. I feel like I just stepped through the looking glass.
So, out of curiosity, I just loaded Webmail in MS Edge, and everything was set up as I intended. I am discombobulated. I have a special place in my heart for Opera, in spite of everything.