Hello there We have read the question We try to help How, to fix the issue of numerus incoming pop up s with or of blank fields to compose what is it to turn them option s off for that. Go to the tools (setting or options),general when thunderbird is minimized , move it to the tray),and tick the box.Tools( settings of options ),general, scroll down to incoming mails , to modify the appearance of pop up notifications shown in your taskbar. Does it fix that issue? Greetings Firefox volunteer