I have been a Pegasus using since the 1990's, using version 4.8 on windows 11 computer. This morning my email received folder was missing. I did find 3 copies of it on the mail folder page under some weird script. I deleted 2 of those odd names there, and it eliminated the entire 3rd folder. How do I find the folder in which email received is stored again? I looked at every .pmm file, and I have 5, but still no luck. Is my entire email received file gone, or hidden somewhere? I do have a file save software but I dnt know what file to pick to restore from yesterday? File New and Copies to self are working perfectly.

There is no received email folder with normal setup.
The new mail folder is actually all the CNM files in the mail folder.

You might have filter rules that move CNM mails into mail folders on open.
Many of my incoming emails are moved to the assigned folders.

The folders are pairs of PMM and PMI file (PMM is mail folder, and PMI are the index files for the matching PMM file). New Mail messages are CNM files.

Mike and others..I guess I was not clear. The folder that is missing is when you read a New Mail, and then exit, it goes to what I labeled an email received folder. My new mail folder and copies to self folders are intact, it is email I have read before and then goes to a folder is missing. So it appears I need to find a matching .pmm and .pmi file from yesterday? Do I rename or other .pmm and .pmi files to make those become invisible? I assume you can only have one pair of active .pmm and .pmi files at any one time?

I don't know how your file save software works but if it has captured the contents of your mailbox directory at some point before you did the deletes the make a safety copy of that content to preserve it from being overwritten. You should now be able to do a comparison of the .PMM files in your current mailbox directory to those in the copy of the saved files. Hopefully that will identify any .PMM files in saved that are no longer in your mailbox directory. Report back on what you find.

At this point I don't suggest trying to copy any files from saved back to the mailbox because:

1. A folder is made up of two files with the same filename but with .PMM and .PMI extensions so both would need to be copied.
2. The fact that you saw three in the folder list is abnormal and needs further consideration. Your findings of the .PMM file comparison may help with that.

Thx Brian. I apologize if I am not clear. I own a construction company, but I am not a software expert. The only issue I am having is read emails that go to my email received folder, are all missing. My copy to self and new mail are fine. There were 10 years of old emails saved. When I look at my Pmail/Admin on my hard drive I see 3 files called Fol.......pmm and 5 called Fol.....pmi. How do I choose which of these to use? How does Pegasus choose which of these to use? I know how rename them to .old, so maybe I choose any MATCHING pair of .pmm and .pmi and rename the others to .old? But does Pegusus automatically find these? How does Pegasus chose these? Its confusing. I also use a backup software that has these files.

Here is an explanation of how things work:
Each folder that you see in the Folder list is made up of two files, a .PMM file which contains the actual email content, and a .PMI file that contains an index to the data in the .PMM file. Both have the same filename (eg: FOL12345.PMM and FOL12345.PMI). These files contain what is called an internal folder ID. That internal folder ID is associated with the the folder names you see in the Folder through a file named HIERARCH.PM. It is this association that allows Pegasus Mail to know which .PMM/.PMI file pair to access when you open the folder named "email received".

Thought... Check your Recycle Bin for any FOL?????.PMM files.

Thx Brian....What I did is when back a few days on my saved filed files (Carbonite) and transfered that older heirarcy file to my Mail folder, and labeled the existing one Old. I then picked a larger matching pair file of .pmm and .pmi, and labeled all the others .old.

No luck. Pegusus works fine, new mail is good, and copies to self good. But 10 years of saved emails read and put in a folder are missing. Is there any way we can facetime so you can walk me through this? Im retired so I have plenty of free time now. Or anyone.....I suspect my old emails that were saved are there, but Pegasus can't find them.

And yes, I do see 5 .pmi files in recycle bin.....

This is not surprising considering it may have been looking for the two .PMM files that appear to be missing. I suggest you compare the .PMM and .PMI files in the Carbonite backup with those in the Mail folder that you labeled Old. If you find the two missing .PMM files (the ones whose filenames match the orphaned .PMI files) then restoring both pairs of files from the backup should be the first step. You might also compare the content of Carbonite and the Old HIERARCH.PM files to see what differences exist.

Be sure to keep Pegasus Mail closed when working in it files with a file explorer. Making safety copies before doing any changes is prudent, which it sounds like you are doing (eg: avoid overwriting a file without copying it first, or rename it to preserve the original).

This is weird. I don't believe this is something Pegasus Mail did. I wondered if perhaps during a folder reindex it deleted the existing .PMI file and created a new one but I just did a folder reindex and do not have a .PMI file in my recycle bin so that isn't it.

Do you have Carbonite backups scheduled for only when Pegasus Mail is closed?

Just to be clear. The mail from folders are stored in the PMM and PMI files, so they contain the emails and indexs to the folders in matching PMM files.

If you rename them to PMM.old and PMI.old Pegasus will not see any of the data.
Downloading new mail will not redown them, since it is likely emails have been removed from your ISP or providers mail servers.

The PMM can be LOOKED at with the type command, but should note be edited with programs other than Pegasus or some programs the support mbox formatted files. Not simple text files, but one could see the contents with a type command.

Example on an simple test setup typing the main folder with its default original entry shows this:
note I use linux, so using cat instead of type to view it directly without wine running.
note 2: The first 128 bytes has folder info, and the folder long name that are both null padded fields, but nulls show as nothing. So Main upto From: is 128 characters in length.

cat MAIN.PMM
Main Folder0JOJHB32:3A3A:MAINFrom: Pegasus Mail Technical Support <support@pmail.gen.nz>
To: New Pegasus Mail User <Admin>
Date: Mon, 17 Mar 2003 12:54:20 +1200
MIME-Version: 1.0
Subject: About this folder
Content-type: text/plain; charset=US-ASCII
Content-transfer-encoding: 7BIT
Content-description: Mail message body

This folder is created automatically the first time you run Pegasus 
Mail: it is a general-purpose folder you can use for anything, but it also 
has another attribute that you might find useful.

You can configure Pegasus Mail so that any mail left in your new mail 
folder that you have read but not moved or deleted is automatically 
moved into this folder when the new mail folder is closed. To turn this 
feature on, move the mouse to the 'Tools' menu and click it: from the 
menu select 'Options' to open the Pegasus Mail options dialog. Select 
the 'Basic settings' page in the list of available settings pages.

The name of this folder, 'Main folder' should appear in the field called 
'Name for default mail folder' - if it doesn't, type it in. Then make sure 
that the check box called 'Allow read messages to stay in the new 
mail folder' is unchecked.

Now, all mail that you read and leave in the new mail folder will be 
moved here when you close the new mail folder.

So, would do a check to see what the PMM files in your directory show at beginning.
Should show you the names of each folder to match with the PMM files.

On my system, I rename the folders so my user HIERACH.PM has these lines that show matching names with the PMM and PMI files.

# ls *.PMM
1440.PMM       COPY1314.PMM  COPY2012.PMM  DAD2.PMM           G4L0408.PMM  HARLEY.PMM     MAIN2005.PMM   PMAIL2023.PMM  USPS2019.PMM
ACCOUNT.PMM    COPY2000.PMM  COPY2015.PMM  DAD.PMM            G4L0909.PMM  HERC-XENA.PMM  MAIN2006.PMM   PMAIL2024.PMM  USPS2020.PMM
AFT.PMM        COPY2001.PMM  COPY2016.PMM  DHARRIS.PMM        G4L1011.PMM  IBM.PMM        MAIN2007.PMM   PMAIL.PMM      USPS2021.PMM
ALUMNI.PMM     COPY2002.PMM  COPY2017.PMM  DISNEY.PMM         G4L1213.PMM  JAY.PMM        MAIN2008.PMM   PM-NEWS.PMM    USPS2022.PMM
AMAZON.PMM     COPY2003.PMM  COPY2018.PMM  DONNA_SUMMERS.PMM  G4L1418.PMM  JUNK.PMM       MAIN.PMM       REDHAT.PMM     USPS.PMM
AMZOLD.PMM     COPY2004.PMM  COPY2019.PMM  EBAYOLD2.PMM       G4L1920.PMM  KERNEL.PMM     MERCURY.PMM    SALIVE.PMM     WATT.PMM
ANALOGX.PMM    COPY2005.PMM  COPY2020.PMM  EBAYOLD.PMM        G4L2122.PMM  KEVIN.PMM      MOM-ORG.PMM    SPAMH.PMM      WEBCAL.PMM
BACKUP.PMM     COPY2006.PMM  COPY2021.PMM  EBAY.PMM           G4L2324.PMM  KUENTOS.PMM    MOM.PMM        SPAM.PMM       WGET2.PMM
BILL521.PMM    COPY2007.PMM  COPY2022.PMM  ELAINE1.PMM        G4L.PMM      LIBRE.PMM      OPENCOB.PMM    SQUID.PMM      ZHAOPEI.PMM
BLOODBANK.PMM  COPY2008.PMM  COPYSELF.PMM  ELAINE2.PMM        G4U.PMM      LINUX.PMM      OXFORD.PMM     SYSLINUX.PMM
BOYCOTT.PMM    COPY2009.PMM  C.PMM         ELAINE3.PMM        GFT.PMM      LYNDAE.PMM     PMAIL2020.PMM  TIGHTVNC.PMM
BRAIN.PMM      COPY2010.PMM  CUSTCARE.PMM  ELAINE.PMM         GRC.PMM      MAIN2003.PMM   PMAIL2021.PMM  TISHAWNNA.PMM
COLLECTZ.PMM   COPY2011.PMM  DAD1.PMM      FEDORA.PMM         GRUB.PMM     MAIN2004.PMM   PMAIL2022.PMM  USPS2018.PMM

HEIRACH.PM file

# cat HIERARCH.PM
2,1,"024B349:My mailbox","Michael Setzer II","Michael Setzer II"
0,0,"Z2OMN80U:25D5:1440","024B349:My mailbox","1440"
0,0,"16D6FBC5:663A:ACCOUNT","024B349:My mailbox","Account"
0,0,"5A1ACD52:097A:AFT","024B349:My mailbox","AFT"
0,0,"778BEE16:656D:ALUMNI","024B349:My mailbox","Alumni"
0,0,"3BF8FBD0:663B:AMAZON","024B349:My mailbox","AMAZON"
0,0,"O0DY2II5:023F:AMZOLD","024B349:My mailbox","AMZOLD"
0,0,"1C84FBD0:663C:ANALOGX","024B349:My mailbox","Analogx"
1,0,"7FE82963:DADTRAY","024B349:My mailbox","DADTRAY"
1,0,"4DB14767:G4LTRAY","024B349:My mailbox","G4LTRAY"
0,0,"67D0FBDF:663F:BACKUP","024B349:My mailbox","Backup"
0,0,"64D8FB72:662F:BILL521","024B349:My mailbox","Bill521"
0,0,"1B9DFC75:6659:BLOODBANK","024B349:My mailbox","Blood Bank"
0,0,"0QB2VFK2:7BE5:BOYCOTT","024B349:My mailbox","Boycott"
0,0,"01D5FBEC:6641:BRAIN","024B349:My mailbox","Brain Share"
0,0,"AFML8EUK:0F8A:C","024B349:My mailbox","C"
0,0,"069EAFD6:5A1A:COLLECTZ","024B349:My mailbox","CollectZ"
0,0,"5OUTNTZZ:5CC5:COPY1314","08FE2816:COPYTRAY","Copy1314"
0,0,"UAPFMJM3:7A58:COPY2000","08FE2816:COPYTRAY","Copy2000"
0,0,"NP13X71Y:6176:COPY2001","08FE2816:COPYTRAY","Copy2001"
0,0,"4EP2LN9Z:6177:COPY2002","08FE2816:COPYTRAY","Copy2002"
0,0,"CE0LCQIN:6178:COPY2003","08FE2816:COPYTRAY","Copy2003"
0,0,"RJGEYE3R:6179:COPY2004","08FE2816:COPYTRAY","Copy2004"
0,0,"ZJRXOHCF:617A:COPY2005","08FE2816:COPYTRAY","Copy2005"
0,0,"SBFWUL0V:7536:COPY2006","08FE2816:COPYTRAY","Copy2006"
0,0,"IWHKVB32:6174:COPY2007","08FE2816:COPYTRAY","Copy2007"
0,0,"AY8RGEMX:6175:COPY2008","08FE2816:COPYTRAY","Copy2008"
0,0,"C7X7CSP5:23BE:COPY2009","08FE2816:COPYTRAY","Copy2009"
0,0,"QOOZDVTD:5599:COPY2010","08FE2816:COPYTRAY","Copy2010"
0,0,"0O3QIVY7:559A:COPY2011","08FE2816:COPYTRAY","Copy2011"
0,0,"YMOG8BN4:46D0:COPY2012","08FE2816:COPYTRAY","Copy2012"
0,0,"5MDK54HK:72D0:COPY2015","08FE2816:COPYTRAY","Copy2015"
0,0,"YXBMYZ2F:72D1:COPY2016","08FE2816:COPYTRAY","Copy2016"
0,0,"DACD8HA4:72D2:COPY2017","08FE2816:COPYTRAY","Copy2017"
0,0,"J39XXZ1C:72D3:COPY2018","08FE2816:COPYTRAY","Copy2018"
0,0,"2CMM31CS:2128:COPY2019","08FE2816:COPYTRAY","COPY2019"
0,0,"M82PYM4C:2129:COPY2020","08FE2816:COPYTRAY","COPY2020"
0,0,"2R25QWAB:212A:COPY2021","08FE2816:COPYTRAY","COPY2021"
0,0,"N1UYU4DT:212B:COPY2022","08FE2816:COPYTRAY","COPY2022"
0,0,"2BD83F9D:0DF4:COPYSELF","024B349:My mailbox","CopySelf",0,20
0,0,"48F3FCE3:666F:CUSTCARE","024B349:My mailbox","Customer Care"
0,0,"184DFC15:6648:DAD","024B349:My mailbox","Dad"
0,0,"6Z1ADN84:2DB3:DAD1","7FE82963:DADTRAY","DAD1"
0,0,"AAS2Q8AJ:2DB4:DAD2","7FE82963:DADTRAY","DAD2"
0,0,"583E7B7A:113F:DHARRIS","024B349:My mailbox","DHarris"
0,0,"705FFC25:664B:DISNEY","024B349:My mailbox","Disney"
0,0,"0757FB99:6637:DONNA_SU","024B349:My mailbox","DONNA_SUMMERS"
0,0,"69C71ECB:7D08:EBAY","024B349:My mailbox","Ebay"
0,0,"1R7XUGGN:2C66:EBAYOLD","0F641206:EbayTray","EbayOld"
0,0,"9PD4GI7C:781A:EBAYOLD2","0F641206:EbayTray","EbayOld2"
0,0,"262EFB99:6638:ELAINE","024B349:My mailbox","Elaine"
0,0,"HJA1BB1D:556E:ELAINE1","12C82225:ElaineTray","Elaine1"
0,0,"UO9ISKVO:556F:ELAINE2","12C82225:ElaineTray","Elaine2"
0,0,"PR4BDCNE:5901:ELAINE3","12C82225:ElaineTray","Elaine3"
0,0,"0948B824:3D1B:FEDORA","024B349:My mailbox","Fedora"
0,0,"DIIIDMTU:0AFD:G4L","024B349:My mailbox","G4L"
0,0,"3KSSC1HB:6771:G4L0408","4DB14767:G4LTRAY","G4L0408"
0,0,"83DWN76M:7E6A:G4L0909","4DB14767:G4LTRAY","G4L0909"
0,0,"3KDTLD71:6772:G4L1011","4DB14767:G4LTRAY","G4L1011"
0,0,"7Z6IHUB1:6773:G4L1213","4DB14767:G4LTRAY","G4L1213"
0,0,"3H0Q9YJ9:042F:G4L1418","4DB14767:G4LTRAY","G4L1418"
0,0,"RZOHOY4Q:2A8B:G4L1920","4DB14767:G4LTRAY","G4L1920"
0,0,"3OOSMBJP:2E68:G4L2122","4DB14767:G4LTRAY","G4L2122"
0,0,"URAJ5V4B:59AE:G4L2324","4DB14767:G4LTRAY","G4l2324"
0,0,"LW7GN12F:31AE:G4U","024B349:My mailbox","G4U"
0,0,"1B807959:5B63:GFT","024B349:My mailbox","GFT"
0,0,"4060FD28:667D:GRC","024B349:My mailbox","GRC"
0,0,"O2WCFHFD:10C2:GRUB","024B349:My mailbox","Grub"
0,0,"BF64HBCK:35D9:HARLEY","024B349:My mailbox","Harley"
0,0,"2BA4FCC7:6668:HERC-XEN","024B349:My mailbox","Herc-Xena"
0,0,"15B7FCBB:6666:IBM","024B349:My mailbox","IBM"
0,0,"478E975C:16D1:JAY","024B349:My mailbox","Jay"
0,0,"00C0FD35:667E:JUNK","024B349:My mailbox","Junk or suspicious mail"
0,0,"C1UU809Q:5FC2:KERNEL","024B349:My mailbox","Kernel"
0,0,"25EDFD89:668C:KEVIN","024B349:My mailbox","Kevin"
0,0,"0D44FCF3:6670:KUENTOS","024B349:My mailbox","Kuentos"
0,0,"UDCKE6GE:7DD0:LIBRE","024B349:My mailbox","Libre Office"
0,0,"6FB3FD95:668F:LINUX","024B349:My mailbox","Linux"
0,0,"556CFDB1:6690:LYNDAE","024B349:My mailbox","LyndaE"
0,0,"0694FC35:664D:MAIN","024B349:My mailbox","Main Folder"
0,0,"DJHBYUKV:5478:MAIN2003","6FC54766:MAINTRAY","Main2003"
0,0,"DVM87FYO:5479:MAIN2004","6FC54766:MAINTRAY","Main2004"
0,0,"60TOHB32:4255:MAIN2005","6FC54766:MAINTRAY","Main2005"
0,0,"5Y00PGC7:5D6D:MAIN2006","6FC54766:MAINTRAY","Main2006"
0,0,"E5JG7AV3:5D6E:MAIN2007","6FC54766:MAINTRAY","Main2007"
0,0,"ZA2JSAID:3FA2:MAIN2008","6FC54766:MAINTRAY","Main2008"
0,0,"1AD6FCBB:6667:MERCURY","024B349:My mailbox","Mercury"
0,0,"12DDFE72:66AE:MOM","024B349:My mailbox","Mom"
0,0,"EC5HSZO9:1BBA:MOM-ORG","024B349:My mailbox","Mom-org"
0,0,"Z6A3JHPE:28AA:OPENCOB","024B349:My mailbox","Open Cobol"
0,0,"WXSNAAA4:005F:OXFORD","024B349:My mailbox","Oxford"
0,0,"264FFDF7:669D:PM-NEWS","024B349:My mailbox","PM-News"
0,0,"019AFDF7:669C:PMAIL","024B349:My mailbox","Pegasus Mail List"
0,0,"E8OJWE5E:571D:PMAIL2020","76751789:PMAILTRAY","PMAIL2020"
0,0,"EM1LN1WP:571E:PMAIL2021","76751789:PMAILTRAY","PMAIL2021"
0,0,"T7N2J0AW:4D5B:PMAIL2022","76751789:PMAILTRAY","PMAIL2022"
0,0,"3VMJVXZ0:2079:PMAIL2023","76751789:PMAILTRAY","PMAIL2023"
0,0,"MG2ZS3H6:03EA:PMAIL2024","76751789:PMAILTRAY","PMAIL2024"
1,0,"08FE2816:COPYTRAY","024B349:My mailbox","COPYTRAY"
1,0,"6FC54766:MAINTRAY","024B349:My mailbox","MAINTRAY"
1,0,"3C8A5551:USPSTRAY","024B349:My mailbox","USPSTRAY"
0,0,"2BB74576:0A72:REDHAT","024B349:My mailbox","RedHat"
0,0,"3TMH6SFS:19C1:SALIVE","024B349:My mailbox","Salive"
0,0,"3B8BA31E:0943:SPAM","024B349:My mailbox","Spam"
0,0,"IK1H7AZT:54C9:SPAMH","024B349:My mailbox","SpamH"
0,0,"2UE9GFDF:75EF:SQUID","024B349:My mailbox","Squid"
0,0,"BP4JRIND:32D5:SYSLINUX","024B349:My mailbox","Syslinux"
0,0,"0D5DFB57:1E25:TIGHTVNC","024B349:My mailbox","TightVnc"
0,0,"ECHSJGQS:3985:TISHAWNNA","024B349:My mailbox","Tishawnna"
1,0,"76751789:PMAILTRAY","024B349:My mailbox","PMAILTRAY"
0,0,"FDI909TU:4AC0:USPS","024B349:My mailbox","USPS"
0,0,"FUIF553Y:23DE:USPS2018","3C8A5551:USPSTRAY","USPS2018"
0,0,"8QM3VKXP:3337:USPS2019","3C8A5551:USPSTRAY","USPS2019"
0,0,"V3VV7J9V:3338:USPS2020","3C8A5551:USPSTRAY","USPS2020"
0,0,"MRHQQDQ7:3873:USPS2021","3C8A5551:USPSTRAY","USPS2021"
0,0,"X7FTDG6F:575E:USPS2022","3C8A5551:USPSTRAY","USPS2022"
0,0,"5721FE56:66A9:WATT","024B349:My mailbox","Watt"
0,0,"5C8F36E1:170C:WEBCAL","024B349:My mailbox","WebCal"
0,0,"ATCPJTA5:36A7:WGET2","024B349:My mailbox","wget2"
0,0,"25CC2EA6:27EF:ZHAOPEI","024B349:My mailbox","Zhaopei"
1,0,"12C82225:ElaineTray","024B349:My mailbox","ElaineTray"
1,0,"0F641206:EbayTray","024B349:My mailbox","EbayTray"

Have had a PMI sometime get corrupted, but deleting the PMI file is ok with Pegasus closed, and it will be recreated, but will loose some info on read/unread messages, and some deleted messages can reappear if space hasn't been recovered.

I just found this in a Carbonite knowledgebase article titled "Scheduling Your Backup for Carbonite Safe":

"By default, the Online Backup will run on a continuous basis after your initial backup completes. When a file is created or changed, it will be backed up within 10 minutes. If a backed up file is changed more than once in a 24 hour period, the most recent change will be backed up within 24 hours."

I assume that your "email received" folder would have been receiving mail regularly throughout the day which would mean its files fall into the "more than once in a 24 hour period" category meaning it gets backup up sometime with 24 hours. This is concerning because there seems to be the potential for Carbonite to be attempting to back up those folder files at the same time when Pegasus Mail is trying to write a new message to the folder. This same concern holds true for the Pegasus Mail files that maintain the status of Pegasus Mail since they are being written to routinely an one of those writes could bump heads with Carbonite doing a backup. What do you know about how Carbonite works? Am I way off base?

BTW, Windows 11 has a feature called "File history". I don't know anything more about it than that it exists but it might be worth some research to see if it might be of any value for restoring mail files.

I'm like a kid trying to find Gold. What I did, I went to Mail/Admin and I chose the largest out of 5 (fol.......pmm) files and made the other 4 .pmm files not get recognize but changing their name to old. I did the same with all (FOL....pmi) files, and only kept the matching .pmi and .pmm working. I then started Pegusus, went to Mail Folders, chose my email received folder, which was empty, and chose reindex. As a result about 400 of the 3,000 emails I was looking for reappeared! But where are the other 2600?

When a read email is saved, are they the only files that get a (fol......pmm) name and matching ...(fol....pmi) name? How do I choose the correct pair that has all my old emails? The largest file?

I will gladly pay someone via Venmo if they want to help me....

Brian,

Remember, I can answer any question about construction or real estate, or flying, but not software. I have been using Carbonite for over ten years and never had this problem. So I doubt that is an issue? I am really lost trying which combo .pmm and .pmi I am suppose to use? There are so many combos?

As I said before.
It you use type on each PMM file
Example:
type main.pmm | more
The first line will contain the text name for the folder, and then the key used in HIERARCH.PM.

That should let you identify each of the PMM/PMI pairs to let you know what the name is:

Wondering if perhaps you backup was done while Pegasus was open, and might have backed up the PMM file at one point, and the PMI file at a different point.

I never backup Pegasus while it is open.

Script I use to backup my setup.

#!/usr/bin/bash
if [ "$EUID" -ne 0 ] ; then
    echo -e 'Need to be root user';exit 1
fi
cd .wine/drive_c || exit
7zz a /home/msetzerii/pmsave-"$(date +%F)".7z PMAIL/*
cd /home/msetzerii/ || exit
chown msetzerii:msetzerii pmsave-"$(date +%F)".7z
7zz t pmsave-"$(date +%F)".7z
cp -v pmsave-"$(date +%F)".7z /data
ncftpput -u msetzerii -p ************** 192.168.1.28 . pmsave-"$(date +%F)".7z 
ncftpput -u msetzerii -p ************** 192.168.1.8  . pmsave-"$(date +%F)".7z

Created a 7z archive of PMAIL directory in my home directory.
Copy the backup to a directory on a 2nd drive in machine
Copy archive to two other machines

Generally keep a few generations of backups, before removing old ones.
Currently have 3 in /data
1399290859 Oct 4 10:30 /data/pmsave-2025-10-04.7z
1410776061 Nov 5 20:10 /data/pmsave-2025-11-05.7z
1430625240 Jan 21 04:46 /data/pmsave-2026-01-21.7z

You could try to reindex folders.
Right-click on each folder, and select the option to reindex.
That might restore missing records.
Did once have a corrupted PMI file that would not reindex, but renaming the bad PMI file, and then opening Pegasus did allow it to create a new PMI file that did work fine.

I don't know how to help at this point. Are you unable to look on Carbonite at a point prior to the problem to see what .PMM/.PMI file pairs are available to restore and then compare that list with what is in the mailbox directory now?

My inclination is to have you rename the current \Mail directory and then restore the \Mail directory from a Carbonite backup BUT as I understand Carbonite, it does not take a point in time snapshot so I don't know whether those .PMI files will be in synch with their .PMM counterpart, or whether the status files like HIERARCH.PM and STATE.PMJ will be in synch with the folder files in that particular backup set. I guess you don't have anything to lose if you try it. If it doesn't work, you can remove the restored \Mail directory and rename the old one back to \Mail to return to the status before attempting the restore.

There is no way to tell, especially considering the deletion of two folders that you mentioned in your initial post.

Sorting the mailbox files by filename will list all FOL?????.PMM and .PMI files sequentially which should make a comparison to what is on Carbonite possible without too much effort, that is if Carbonite can be sorted the same way.

I can't follow this? The PMM/PMI files have the exact same names to be in pairs??
Since I have a program that renames my folders, it is very clear which pairs there are.
With the default setup, most folders are created for FOL0619E (That is my deleted Mail Folder folder.
Normally would be deleted, but had a spam message that caused pegasus to crash, so it didn't get deleted. But shows the example. I'll delete it afterwards, and it will be recreated with a different name
So just do a dir .PMM .PMI under windows would give similar information.

ls -1 *.PMM *.PMI
1440.PMI
1440.PMM
ACCOUNT.PMI
ACCOUNT.PMM
AFT.PMI
AFT.PMM
ALUMNI.PMI
ALUMNI.PMM
AMAZON.PMI
AMAZON.PMM
AMZOLD.PMI
AMZOLD.PMM
ANALOGX.PMI
ANALOGX.PMM
BACKUP.PMI
BACKUP.PMM
BILL521.PMI
BILL521.PMM
BLOODBANK.PMI
BLOODBANK.PMM
BOYCOTT.PMI
BOYCOTT.PMM
BRAIN.PMI
BRAIN.PMM
COLLECTZ.PMI
COLLECTZ.PMM
COPY1314.PMI
COPY1314.PMM
COPY2000.PMI
COPY2000.PMM
COPY2001.PMI
COPY2001.PMM
COPY2002.PMI
COPY2002.PMM
COPY2003.PMI
COPY2003.PMM
COPY2004.PMI
COPY2004.PMM
COPY2005.PMI
COPY2005.PMM
COPY2006.PMI
COPY2006.PMM
COPY2007.PMI
COPY2007.PMM
COPY2008.PMI
COPY2008.PMM
COPY2009.PMI
COPY2009.PMM
COPY2010.PMI
COPY2010.PMM
COPY2011.PMI
COPY2011.PMM
COPY2012.PMI
COPY2012.PMM
COPY2015.PMI
COPY2015.PMM
COPY2016.PMI
COPY2016.PMM
COPY2017.PMI
COPY2017.PMM
COPY2018.PMI
COPY2018.PMM
COPY2019.PMI
COPY2019.PMM
COPY2020.PMI
COPY2020.PMM
COPY2021.PMI
COPY2021.PMM
COPY2022.PMI
COPY2022.PMM
COPYSELF.PMI
COPYSELF.PMM
C.PMI
C.PMM
CUSTCARE.PMI
CUSTCARE.PMM
DAD1.PMI
DAD1.PMM
DAD2.PMI
DAD2.PMM
DAD.PMI
DAD.PMM
DHARRIS.PMI
DHARRIS.PMM
DISNEY.PMI
DISNEY.PMM
DONNA_SUMMERS.PMI
DONNA_SUMMERS.PMM
EBAYOLD2.PMI
EBAYOLD2.PMM
EBAYOLD.PMI
EBAYOLD.PMM
EBAY.PMI
EBAY.PMM
ELAINE1.PMI
ELAINE1.PMM
ELAINE2.PMI
ELAINE2.PMM
ELAINE3.PMI
ELAINE3.PMM
ELAINE.PMI
ELAINE.PMM
FEDORA.PMI
FEDORA.PMM
FOL0619E.PMI
FOL0619E.PMM
G4L0408.PMI
G4L0408.PMM
G4L0909.PMI
G4L0909.PMM
G4L1011.PMI
G4L1011.PMM
G4L1213.PMI
G4L1213.PMM
G4L1418.PMI
G4L1418.PMM
G4L1920.PMI
G4L1920.PMM
G4L2122.PMI
G4L2122.PMM
G4L2324.PMI
G4L2324.PMM
G4L.PMI
G4L.PMM
G4U.PMI
G4U.PMM
GFT.PMI
GFT.PMM
GRC.PMI
GRC.PMM
GRUB.PMI
GRUB.PMM
HARLEY.PMI
HARLEY.PMM
HERC-XENA.PMI
HERC-XENA.PMM
IBM.PMI
IBM.PMM
JAY.PMI
JAY.PMM
JUNK.PMI
JUNK.PMM
KERNEL.PMI
KERNEL.PMM
KEVIN.PMI
KEVIN.PMM
KUENTOS.PMI
KUENTOS.PMM
LIBRE.PMI
LIBRE.PMM
LINUX.PMI
LINUX.PMM
LYNDAE.PMI
LYNDAE.PMM
MAIN2003.PMI
MAIN2003.PMM
MAIN2004.PMI
MAIN2004.PMM
MAIN2005.PMI
MAIN2005.PMM
MAIN2006.PMI
MAIN2006.PMM
MAIN2007.PMI
MAIN2007.PMM
MAIN2008.PMI
MAIN2008.PMM
MAIN.PMI
MAIN.PMM
MERCURY.PMI
MERCURY.PMM
MOM-ORG.PMI
MOM-ORG.PMM
MOM.PMI
MOM.PMM
OPENCOB.PMI
OPENCOB.PMM
OXFORD.PMI
OXFORD.PMM
PMAIL2020.PMI
PMAIL2020.PMM
PMAIL2021.PMI
PMAIL2021.PMM
PMAIL2022.PMI
PMAIL2022.PMM
PMAIL2023.PMI
PMAIL2023.PMM
PMAIL2024.PMI
PMAIL2024.PMM
PMAIL.PMI
PMAIL.PMM
PM-NEWS.PMI
PM-NEWS.PMM
REDHAT.PMI
REDHAT.PMM
SALIVE.PMI
SALIVE.PMM
SPAMH.PMI
SPAMH.PMM
SPAM.PMI
SPAM.PMM
SQUID.PMI
SQUID.PMM
SYSLINUX.PMI
SYSLINUX.PMM
TIGHTVNC.PMI
TIGHTVNC.PMM
TISHAWNNA.PMI
TISHAWNNA.PMM
USPS2018.PMI
USPS2018.PMM
USPS2019.PMI
USPS2019.PMM
USPS2020.PMI
USPS2020.PMM
USPS2021.PMI
USPS2021.PMM
USPS2022.PMI
USPS2022.PMM
USPS.PMI
USPS.PMM
WATT.PMI
WATT.PMM
WEBCAL.PMI
WEBCAL.PMM
WGET2.PMI
WGET2.PMM
ZHAOPEI.PMI
ZHAOPEI.PMM

As example of looking at my PMAIL.PMM folders it shows this as first lines.
$ clear;for a in PMAIL.PMM; do echo -n $a; head -n 1 <$a; done

PMAIL2020.PMMPMAIL2020E8OJWE5E:571D:PMAIL2020Return-Path: <owner-pm-win@LISTSERV.UA.EDU>
PMAIL2021.PMMPMAIL2021EM1LN1WP:571E:PMAIL2021Return-Path: <owner-pm-win@LISTSERV.UA.EDU>
PMAIL2022.PMMPMAIL2022T7N2J0AW:4D5B:PMAIL2022Return-Path: <owner-pmail@LISTSERV.UA.EDU>
PMAIL2023.PMMPMAIL20233VMJVXZ0:2079:PMAIL2023Return-Path: <owner-pmail@LISTSERV.UA.EDU>
PMAIL2024.PMMPMAIL2024MG2ZS3H6:03EA:PMAIL2024Return-Path: <owner-pmail@LISTSERV.UA.EDU>
PMAIL.PMMPegasus Mail List019AFDF7:669C:PMAILReturn-Path: <owner-pm-win@LISTSERV.UA.EDU>

I appreciate your help, but this is getting way pass my capability. If I took you flying and said, ok, you land the plane, what would you do? That's how I feel.

As I said, I think facetime could solve this. I am willing to pay for consultation to get my missing files back.

Paul

If it was a Cessna 152, I might still be able to get it on the ground in one piece. Never got my license but had solo time.

I think this has become a file recovery endeavor. I have tried to help with identifying the files that should be recovered but am not willing to get involved the recovery process itself. To me it falls into the realm of PC support, which I despise doing.

What are you doing in regards to messages after retrieval from your email host? If you aren't deleting messages on the server then your messages should be there. Accessing them with an IMAP connection might be a option.