Rated 5 out of 5 stars

yazan: custom.firefox.lady tarih: Mart 16, 2021 ·

Thanks, works fine. The inbuilt keyboard shortcut also works, but I like having a button. Agree that a monochrome or even grayscale icon would look less glaring. I used userChrome.css to sub the inbuilt 'Get Messages' icon:

#gamb_pharqcon_com-browserAction-toolbarbutton {
--webextension-toolbar-image-2x: url("chrome://messenger/skin/icons/getmsg.svg") !important;
list-style-image: url("chrome://messenger/skin/icons/getmsg.svg") !important;
}

Exact css depends on system; YMMV

This review is for a previous version of the add-on (1.0.1). 

yazan: C-E (Geliştirici) tarih: Mart 19, 2021 ·

Version 2.0.2 now offers the possibility to choose between different icons.