Passwords: You can only create or modify a password in the webmail account accessed via a browser.

Then you need to update the stored password in Thunderbird.

• Settings > Privacy & Security
• scroll to Passwords section
• Clickon 'Saved Passwords'
• Click on 'Show Passwords'

If asked for a 'Windows Security' password - when you start up comuter and logon to your User Account - that is the password required.

You should have two lines for stored password Pop account uses: mailbox://account... Imap account uses: imap://account... Both use SMTP: smtp://account.....

• right click on each relevant line and select 'Edit password' - completely clear contents and type in correct password.
• click on 'Close'

re :how do I delete all my emails at the same time

If you want to delete all emails in a particular folder: eg: Inbox

• Select 'Inbox
• Select an email in the Message List
• Hold down 'Ctrl' key and press 'A' - this selects/highlightes all emails
• They will appear as X number of conversations in the Message Pane - click on 'Delete'

Then compact the folder to remove all old 'marked as deleted' and hidden emails.

• Right click on eg: Inbox folder and select 'Compact'
• You will now have a completely empty Inbox.

Then right click on the 'Deleted/Trash' folder and select 'Empty Deleted'

Please note - if this is an Imap mail account, deleteing emails will delete them off the server as well.

If you have a Gmail imap account, then gmail stores all incoming, outgoing, archived etc - literally everything on the 'All Mail' folder. To delete every email from every imap folder AND also everything off the server.

• Subscribe to see the 'All Mail' folder.
• Select 'All Mail' folder
• Allow some time for the download
• select all emails - use same method as previously mentioned using 'Ctrl+A'
• click on Delete

Then compact the 'All Mail' folder.