The reason is I had no idea.
Thank you. However, I am not sure it is applicable in our case:
- We are on a hosted instance on a Standard plan
- I do not think we want to import the whole mailing list, only perhaps a couple (10-20 max) of longer email chains.
- When we launch the forum, we will not for certain reasons close the mailing list rightaway. I expect that some people will still occasionally use it. We plan to immediately forward any new emails to Discourse, but sometimes others might be quicker and reply and start a new email chain.