improvement: Allow export to pst file

[demdante]

Hello. I wanted to suggest a useful feature that you could potentially implement into gmvault to make improve its usefulness. I use outlook as my primary email client, so being able to export my backed up gmail emails to a pst (outlook data) file would be very useful.

[JohnVillalovos]

FYI: This project is dead and the maintainer doesn't respond to any issues.

[karanrajpal14]

Are there any other viable alternatives?