Python-raven: Crashing while offline. Report later?

I’ve got a python application running on linux machines all over the globe. They may or may not have internet at the time of a crash. They usually get internet connection at some point. Reading the raven-python code it seems raven does not support this scenario, but assumes connection to servers is always available. Is right for me? Is there any way to get offline support? Do I need to roll my own. Thanks in advance.