mail-open from coolicons in Line with regular corners. email, read, opened, envelope, message, letter. Other styles and corners: @coolicons/<style>/<radius>/mail-open with line, duocolor, duotone, fill or bulk and sharp or round. Leave out regular, like @coolicons/fill/mail-open, and use @coolicons/mail-open for line with regular corners.
pnpm dlx shadcn@latest add "https://coolicons.cool/r/mail-open.json"