Sometimes i get messages that contain only similar content like this on below: ''''''"--_010_AM9PR01MB741253DE32DF125557E6A8C4FD29AAM9PR01MB7412eurp_--"'''''' Its corrupted only in Thunderbird client on my laptop. When i open the same message on my phone or on different mail (web)client it works and if I forward message to myself it does show the content. There is no fixed condition or sender that implicates corruption. My Thunderbird is updated, senders have message format set to HTML or Plain Text. It started a while ago, but till then everything was working just fine. Also some messages that I send turn out to be corrupted. I haven't checked MIME yet. Antivirus works just fine with Thunderbird since installation. One and only extension added to Thunderbird is LookOut for opening .dat attachments sent from Outlook. What should I do to retrieve info from all of those messages and to prevent them from corrupting in the future?