Outlook Mac database recovery is no where near to possible unless worked with a third party application. Gladwev offers one of the best tools in the class named OLK14 recovery tool. This application extracts mails directly from the Outlook Mac Database and converts them to MBOX and PSt format for easy access across other mail programs.
Outlook Mac mails are not readable in Windows. to do the same, you will need an OLM to PST converter tool. I have used OLM to PST Converter Ultimate by Gladwev. This tool is fast and too accurate at converting the emails. Moreover, this tool saves the email folders to right places.
Outlook exports its emails in OLM format. However, this file format is not well received by Apple Mail. At this, you will need the help of a tool that can help you import olm files to mac mail format. In fact, there are several tools in the market that offer this task. I have been helped by Gladwev’s products in the past in more than one instances. Take a free trial of OLM Converter Pro before purchasing it.
OLM files are exported by Outlook Mac, however, PST files are exported by the Windows version. Something that still worries me is, while PST files are imported by Outlook Mac, the Windows version doesn’t import OLM files. In order to switch the Outlook versions, you will need to convert OLM files to PST mail. There is no free add-on in either of the Outlook versions for this task. Furthermore, there is no free third party application for this task. However, there are plenty of paid applications that can help you at this. Gladwev’s products are named quite often. The reviews are really good and the UI is said to be much user-friendly. Their tool OLM to PST Converter Ultimate does this task. Take a free trial before purchasing the full version.
Thunderbird can only read files in MBOX format. OLM format is not supported well on Thunderbird. This is a reason, you will need to export OLM files to MBOX format first. In fact, there are several brands that offer the service. I have tried OLM converter Pro by GLadwev in the past and it was good to work with. To know more, take a free trial of the tool.