Footer text under poster

I am using the baposter package to create a basic poster and under the last box I'd like to put some normal un-boxed footer text. But I don't really know how to achieve this. baposter itself doesn't seem to have a footer component. If I just put the text as is under the last box, nothing is shown and if I put it between \end{poster} and \end{document}, it is shown on a new page. So what is the easiest way to just put a line of normal footer text under the last box of a baposter?

This is a tricky solution. You can write your un-boxed text as a regular headerbox but without header and border. Although it's supposed that all headerboxes share options defined in first poster parameter, it's possible to change them in headerbox options.

\documentclass[a0paper,portrait]{baposter}

\usepackage{lipsum}

\begin{document}
\begin{poster}
%settings
{background=none,
borderColor=black,
textborder=rectangle,
background=none,
}
%Eye Catcher
{}
%Title
{My poster with foottext}
%Author
{Me}
%University Logo
{}

{name=foottext, column=0, span=3, above=bottom,%

• Thank you. I ended up tweaking the baposter class with my very modest latex abilities, defining an additional box environment similar to the headerbox but removing all the header and drawing stuff from pictures and size computations. But your approach also works (after adding some more options to get rid of shading) and would have been much less painful, didn't know you could override the initial options per box. – Chris says Reinstate Monica Sep 3 '13 at 11:55
• If you're using non-rectangle headers, add headershape=rectangle to your foottext box. – dayne Oct 12 '18 at 13:15