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Slow load of imap on startup

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Hello with recent upgrade (to 102.0.xx I think), starting up Thunderbird inbox with imap has got very slow. Visually on startup, there is an icon associated with the inbox tab “Inbox” dot on “Inbox me@my_imap.net” working, for a long time before actually brings in new mail. I've tried tweaking some sync settings - but no change I've (foolishly) upgraded another computer that had Thurnderbird 94.xx, that started having the same problems

Any suggestions appreciated? thanks


 Application Basics
   Name: Thunderbird
   Version: 102.0.2
   Build ID: 20220708192300
   Distribution ID:
   Update Channel: release
   User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.0.2
   OS: Windows_NT 10.0 19044
   OS Theme:
   Launcher Process: Enabled
   Multiprocess Windows: 0/0
   Fission Windows: 0/0
             Enabled by default
   Remote Processes: 3
   Enterprise Policies: Inactive
   Google Location Service Key: Missing
   Google Safebrowsing Key: Missing
   Mozilla Location Service Key: Missing
   Safe Mode: false
   Memory Size (RAM): 15.8 GB
   Disk Space Available: 44.2 GB
 Mail and News Accounts
   account1:
     INCOMING: account1, , (none) Local Folders, 0, 3
   account3:
     INCOMING: account3, , (imap) imap.sonic.net:993, SSL, 3
     OUTGOING: , mail.sonic.net:465, SSL, 3, true
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
     OUTGOING: , mail.sonic.net:465, SSL, 3, false
   account4:
     INCOMING: account4, , (pop3) pop.sonic.net:995, SSL, 3
     OUTGOING: , none.sonic.net:465, SSL, 3, true
   account5:
     INCOMING: account5, , (pop3) pop.sonic.net:995, SSL, 3
     OUTGOING: , mail.sonic.net:465, SSL, 3, true
 Calendar Settings
     gCalendar
       Name
       Value
       Name:
       Type: gdata
       Disabled: true
       Username:
       URI:
       Refresh Interval: 60
       Read-only: true
       Suppress Alarms: false
       Cache Enabled: false
       iMIP Identity:
       iMIP Disabled:
       iMIP Account:
       Organizer Id:
       Force Email Scheduling:
       Popup Alarms Supported:
       Alarms on Invitation Supported:
       Max Alarms Per Event:
       Attachment Supported:
       Max Categories:
       Privacy State Supported:
       Priority Supported:
       Event Supported:
       Task Supported:
       Local Time Supported:
       UTC/GMT Supported:
       Auto-Scheduling Supported:
     Home
       Name
       Value
       Name:
       Type: storage
       Disabled:
       Username:
       URI:
       Refresh Interval:
       Read-only:
       Suppress Alarms:
       Cache Enabled:
       iMIP Identity: id4
       iMIP Disabled:
       iMIP Account:
       Organizer Id:
       Force Email Scheduling:
       Popup Alarms Supported:
       Alarms on Invitation Supported:
       Max Alarms Per Event:
       Attachment Supported:
       Max Categories:
       Privacy State Supported:
       Priority Supported: true
       Event Supported:
       Task Supported:
       Local Time Supported:
       UTC/GMT Supported:
       Auto-Scheduling Supported:
 Crash Reports for the Last 3 Days
 Remote Processes
   Type: Count
     Web Content: 1 / 8
     Extension: 1
     GPU: 1
 Add-ons
     Name
     Type
     Version
     Enabled
     ID
       Amazon.com
       extension
       1.1
       true
       amazondotcom@search.mozilla.org
       Bing
       extension
       1.0
       true
       bing@search.mozilla.org
       DKIM Verifier
       extension
       5.0.0
       true
       dkim_verifier@pl
       DuckDuckGo
       extension
       1.0
       true
       ddg@search.mozilla.org
       FileLink Provider for Box
       extension
       5
       true
       box-cloudfile@darktrojan.net
       FileLink Provider for Dropbox
       extension
       7
       true
       dropbox-cloudfile@darktrojan.net
       FileLink provider for WebDAV
       extension
       5
       true
       dav-cloudfile@darktrojan.net
       Google
       extension
       1.0
       true
       google@search.mozilla.org
       Wikipedia (en)
       extension
       1.0
       true
       wikipedia@search.mozilla.org
 Security Software
   Type: Name
     Antivirus: Microsoft Defender Antivirus
     Antispyware:
     Firewall: Windows Firewall
Hello with recent upgrade (to 102.0.xx I think), starting up Thunderbird inbox with imap has got very slow. Visually on startup, there is an icon associated with the inbox tab “Inbox” dot on “Inbox me@my_imap.net” working, for a long time before actually brings in new mail. I've tried tweaking some sync settings - but no change I've (foolishly) upgraded another computer that had Thurnderbird 94.xx, that started having the same problems Any suggestions appreciated? thanks Application Basics Name: Thunderbird Version: 102.0.2 Build ID: 20220708192300 Distribution ID: Update Channel: release User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.0.2 OS: Windows_NT 10.0 19044 OS Theme: Launcher Process: Enabled Multiprocess Windows: 0/0 Fission Windows: 0/0 Enabled by default Remote Processes: 3 Enterprise Policies: Inactive Google Location Service Key: Missing Google Safebrowsing Key: Missing Mozilla Location Service Key: Missing Safe Mode: false Memory Size (RAM): 15.8 GB Disk Space Available: 44.2 GB Mail and News Accounts account1: INCOMING: account1, , (none) Local Folders, 0, 3 account3: INCOMING: account3, , (imap) imap.sonic.net:993, SSL, 3 OUTGOING: , mail.sonic.net:465, SSL, 3, true OUTGOING: , mail.sonic.net:465, SSL, 3, false OUTGOING: , mail.sonic.net:465, SSL, 3, false OUTGOING: , mail.sonic.net:465, SSL, 3, false OUTGOING: , mail.sonic.net:465, SSL, 3, false OUTGOING: , mail.sonic.net:465, SSL, 3, false OUTGOING: , mail.sonic.net:465, SSL, 3, false OUTGOING: , mail.sonic.net:465, SSL, 3, false OUTGOING: , mail.sonic.net:465, SSL, 3, false OUTGOING: , mail.sonic.net:465, SSL, 3, false OUTGOING: , mail.sonic.net:465, SSL, 3, false OUTGOING: , mail.sonic.net:465, SSL, 3, false OUTGOING: , mail.sonic.net:465, SSL, 3, false OUTGOING: , mail.sonic.net:465, SSL, 3, false OUTGOING: , mail.sonic.net:465, SSL, 3, false OUTGOING: , mail.sonic.net:465, SSL, 3, false OUTGOING: , mail.sonic.net:465, SSL, 3, false account4: INCOMING: account4, , (pop3) pop.sonic.net:995, SSL, 3 OUTGOING: , none.sonic.net:465, SSL, 3, true account5: INCOMING: account5, , (pop3) pop.sonic.net:995, SSL, 3 OUTGOING: , mail.sonic.net:465, SSL, 3, true Calendar Settings gCalendar Name Value Name: Type: gdata Disabled: true Username: URI: Refresh Interval: 60 Read-only: true Suppress Alarms: false Cache Enabled: false iMIP Identity: iMIP Disabled: iMIP Account: Organizer Id: Force Email Scheduling: Popup Alarms Supported: Alarms on Invitation Supported: Max Alarms Per Event: Attachment Supported: Max Categories: Privacy State Supported: Priority Supported: Event Supported: Task Supported: Local Time Supported: UTC/GMT Supported: Auto-Scheduling Supported: Home Name Value Name: Type: storage Disabled: Username: URI: Refresh Interval: Read-only: Suppress Alarms: Cache Enabled: iMIP Identity: id4 iMIP Disabled: iMIP Account: Organizer Id: Force Email Scheduling: Popup Alarms Supported: Alarms on Invitation Supported: Max Alarms Per Event: Attachment Supported: Max Categories: Privacy State Supported: Priority Supported: true Event Supported: Task Supported: Local Time Supported: UTC/GMT Supported: Auto-Scheduling Supported: Crash Reports for the Last 3 Days Remote Processes Type: Count Web Content: 1 / 8 Extension: 1 GPU: 1 Add-ons Name Type Version Enabled ID Amazon.com extension 1.1 true amazondotcom@search.mozilla.org Bing extension 1.0 true bing@search.mozilla.org DKIM Verifier extension 5.0.0 true dkim_verifier@pl DuckDuckGo extension 1.0 true ddg@search.mozilla.org FileLink Provider for Box extension 5 true box-cloudfile@darktrojan.net FileLink Provider for Dropbox extension 7 true dropbox-cloudfile@darktrojan.net FileLink provider for WebDAV extension 5 true dav-cloudfile@darktrojan.net Google extension 1.0 true google@search.mozilla.org Wikipedia (en) extension 1.0 true wikipedia@search.mozilla.org Security Software Type: Name Antivirus: Microsoft Defender Antivirus Antispyware: Firewall: Windows Firewall
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