If so, maybe you can help me.Which is correct a)“Older than 6 months” or b)“Older than 6 month”?
My money is on a).
If you create a policy to server-archive all mails older than 6 months(!), you will get a link in your mailfile, under Tools-Archive, and it says “Older than 6 month”?
In this and similar situations, just do a Google search for “Older than 6 months” and then for “Older than 6 month” (including quotes) and use the phrase which returned more results. It works for 98% of phrases, and not only for English.