One of my former corporations had an official regulation that we were not allowed to archive any emails that "could be of any value to government authorities" in case of a potential investigation and litigation. The limit was set to 3 months, older emails were wiped out.
I suppose all corporations have these rules.
I've never heard of such a rule, and never worked at company that had that.
Its becoming more common in the U.S. ... email records tend to hurt companies in court more than help them.
For those not in the USA and had not participated in related process, it can seem kind of strange. I am not a lawyer, but I participated in related processes before. So here is my layman's understanding:
In the USA, we have something call
discovery process in a law suit. Say if I sue my company for for sexual harassment from co-workers, somewhere early in the processes (pre-trial), discovery process starts - lawyers from my side can look at the company (defendant) records in search of supporting evidence.
Almost any company would have someone who said something stupid some time, and there is always a chance some juror who may interpret something innocent as something evil.
If you start to destroy things when a law suit is filed, even if you did that before a court order to preserve evidence, you are destroying evidence. If a long long time before there is any legal proceeding in the works, email got destroyed as regular company policy (that all emails are NOT stored after X days), they are gone. You merely destroyed your property but you did not obstruct justice (which would be a felony).
So, if the benefit of having the record is exceeded by the risk of someone filing some gold-digging law suit... Folks here are smart, I can stop here.