Migrate Outlook into Thunderbird?

[Peter Flynn]

On 09/07/2023 17:00, Bo Berglund wrote:
> I know this is not an Ubuntu question but I hope that someone here
> can point me in the right direction...
> 
> I want to get off of Microsoft Outlook email and use for instance
> Thunderbird instead (should work on both Windows and Ubuntu).
Thunderbird is fine. A few silly things they'll never fix but basically 
it's all there.

> What I am trying to find facts about is the conversion of the old
> email store I have (massive since 1998 and migrated between Outlook
> versions to currently Outlook 2019).

Is there an "Export As..." menu anywhere? Or even "Save As..."?

If, so is it possible to select a group of messages and export it into 
standard Unix MBX (mailbox) format?

> So can it be done? (When I checked some years back it could not...)
> Where can I ask such questions and be on topic?

I can ask the Outlook admins in my former employer's IT division.
While I managed to avoid using Microsoft software myself, they are all 
welded to it and seem to know exactly what can and cannot be done.

> I plan on using Thunderbird both on Windows 10 and Ubuntu desktop...
> Is the mail store format the same on both platforms?

I believe so. Their mailbox files on my system are a slightly modified 
MBX format (basically the first line of a message is different, but it's 
all plaintext).

> I have used POP3 all these years so the emails are only inside my PST
> files and not on the server.

Is a PST file some kind of Microsoft container? Are you saying that all 
your Outlook messages are NOT on your Outlook server?

Peter