For small-scale migrations or occasional conversions where budget is limited and an easy GUI is preferred, CubexSoft tools are a practical option after validating via trials. For mission-critical, large-volume, or highly sensitive environments, evaluate enterprise-grade alternatives and perform rigorous testing before production use.
To give you a concrete idea, here is the general workflow for any CubexSoft converter (using PST to MBOX as an example): cubexsoft tools