I usually don’t configure a mailhost for my local development environment. Thus I use the Products.PrintingMailHost to stop Plone from sending out emails and print into the shell instead.
I read about the porting work of this product/tool to Python 3 on:
https://www.starzel.de/blog/python-3-and-more and wanted to try this version out. I added the product to my buildout script ‘local.cfg’ but without success. Buildout fetched the product and I could change its branch to ‘python3’ but it had didn’t work. Its patch wasn’t applied to the Plone mailhost.
I solved this issue by adding ‘ENABLE_PRINTING_MAILHOST True’ to the ‘environment-vars =’ entry of the ‘[instance]’ of ‘core.cfg’.
It looks as follows yet:
environment-vars = zope_i18n_compile_mo_files true ENABLE_PRINTING_MAILHOST True
The printing mailhost is working as expected yet.