Hello there We have read your message. We try to help you. Your Thunderbird ( portable has crashed) Software has recent crashed,oke. First if it s possible clean your pc or device from the remaining Thunderbird software. You suppose to do that with combination of a cleaner if that is installed. Try cccleaner. Safe your profile to a storage device somehow. Completely remove The Thunderbird Software. And remove it s features and programs from the harddisk on your device.(mobile). Open Regedit for mobile use ,search for any data containing Thunderbird, and delete the key Try to reinstall Thunderbird Software again with a new Installation. The Registry Settings allows you to add, modify, and delete the values in the registry of the users. The Registry Settings Configuration enables you to modify the values in the registry centrally and for several users. About the storage for Thunderbird and portable it s probably the same and then w3 are talking about a amount of 4 gb storage for Thunderbird. And that means a limit for that storage per account. Maybe you’re using a second mobile device that is running the second account. Where the usage is the same of account. Some error might appear as described. Sometimes it happens that limited storage their input was wrong. But that is rare at the moment, then suddenly storage where 2 gb instead of 4 gb. It is the past. Other diagnostics are ,bugs. Greeting Firefox volunteer.