GMail Herald version 0.4 had been ported (2013/07/12)
GMail Herald is a notifier for new GMail messages. Open source under the GNU GPL V3 license.

Link: ftp://ftp.netlabs.org/pub/qtapps/gherald-0.4-os2.7z
Project WebSite: http://www.gherald.sourceforge.net/#about/
Port by Elbert Pol.
Source: OS/2 Warp News and Rumors