How can i restore letters from eMclient files

How can i restore letters from eMclient files in new eMclient mail, if previous mail have crash when start ( https://discourse.emclient.com/emclient/to…)

Any tools to backup mail from files or some method for do it?

I need hook up new mail and restore old letters. But i can’t export files from old mail becouse can’t start old mail becouse of error and crash.

Files in eMclient folder:

attachments.dat
category_index.dat
certificate_index.dat
check_db.txt
contact_data.dat
contact_index.dat
event_data.dat
event_index.dat
folders.dat
folders.dat-shm
folders.dat-wal
im_data.dat
im_data.dat-shm
im_data.dat-wal
mail_data.dat // 4+ Gb size
mail_fti.dat
mail_index.dat
main.dat
main.dat-shm
main.dat-wal
privacylists.dat
security_index.dat
settings.xml
task_data.dat
task_index.dat
telemetry.dat

Hello,

It is almost impossible (only in rare conditions) to repair database by putting one file from backup to damaged one, you have to always use File - Backup… to create backup file and then if you need or want to restore File - Restore… to import whole backup into eM Client.

Backup by just copy database folder is useless as you will not be able to restore it back.

Jan