If you have <a href="https://support.mozilla.org/kb/organize-your-messages-using-filters">mail filters</a> that, for example, move mail to local folders, then you must decide where to run filters - in your beta profile or your other profile.
Os oes gennych <a href="https://support.mozilla.org/kb/organize-your-messages-using-filters">hidlyddion e-bost</a> sydd, er enghraifft, yn symud post i ffolderi lleol, yna bydd rhaid i chi benderfynu ble i redeg yr hidlwyr - yn eich proffil beta neu'ch proffil arall.