Tools menu (alt+T) > Activity monitor.

While the activity monitor is active click the down arrow beside the get mail button and select to get mail from the non working account.

What appears in the activity monitor.

It says it is indexing 32 of 81 messages, 38% complete but nothing changes

These errors messages appear when I click on error console. Dont know if that helps?

Please post this info: in thunderbird Help .>TRoubleshooting Information click on 'copy text to clipboard' paste info into this question you can edi/remove all info on fonts and printers but nothing else.

Application Basics

   Name: Thunderbird
   Version: 31.7.0
   User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:31.0) Gecko/20100101 Thunderbird/31.7.0
   Profile Folder: Show in Finder
   Application Build ID: 20150507114201
   Enabled Plugins: about:plugins
   Build Configuration: about:buildconfig
   Memory Use: about:memory

 Mail and News Accounts
   account1:
     INCOMING: account1, , (pop3) mail.tassiemoments.com:995, SSL, passwordCleartext
     OUTGOING: mail.bigpond.com:465, SSL, none, true

   account2:
     INCOMING: account2, , (none) Local Folders, plain, passwordCleartext

   account3:
     INCOMING: account3, , (pop3) mail.bigpond.com:995, SSL, passwordCleartext
     OUTGOING: mail.bigpond.com:465, SSL, none, true

 Crash Reports

 Extensions

 Important Modified Preferences

   Name: Value

     browser.cache.disk.capacity: 358400
     browser.cache.disk.smart_size_cached_value: 358400
     browser.cache.disk.smart_size.first_run: false
     browser.cache.disk.smart_size.use_old_max: false
     extensions.lastAppVersion: 31.7.0
     font.internaluseonly.changed: false
     gfx.blacklist.direct2d: 3
     gfx.blacklist.layers.direct3d9: 3
     mail.openMessageBehavior.version: 1
     mail.spotlight.firstRunDone: true
     mailnews.database.global.datastore.id: 94a8926d-f67a-ba4d-a169-2030e8e150d
     mailnews.database.global.indexer.enabled: false
     network.cookie.prefsMigrated: true
     places.database.lastMaintenance: 1431932814
     places.history.expiration.transient_current_max_pages: 104858
     plugin.importedState: true

 Graphics

     Vendor ID: 0x1002
     Device ID: 0x9588
     WebGL Renderer: false
     GPU Accelerated Windows: 2/2 OpenGL

     AzureCanvasBackend: quartz
     AzureSkiaAccelerated: 0
     AzureFallbackCanvasBackend: none
     AzureContentBackend: quartz

 JavaScript

 Incremental GC: 1

 Accessibility

   Activated: 0
   Prevent Accessibility: 0

 Library Versions

     Expected minimum version
     Version in use

     NSPR
     4.10.6
     4.10.6

     NSS
     3.16.2.3 Basic ECC
     3.16.2.3 Basic ECC

     NSS Util
     3.16.2.3
     3.16.2.3

     NSS SSL
     3.16.2.3 Basic ECC
     3.16.2.3 Basic ECC

     NSS S/MIME
     3.16.2.3 Basic ECC
     3.16.2.3 Basic ECC

re: OUTGOING: mail.bigpond.com:465, SSL, none, true

This says you are sending via SSL but not sending a password which is required according to info at link. https://support.telstra.com.au/t5/Set-Up/IMAP-POP-and-SMTP-information-for-manual-email-setup/ta-p/398464

So check this: In thunderbird right click on mail account name and select 'Settings' In left pane Select 'Outgoing Server (SMTP) Select: mail.bigpond.com and click on 'EDit' Authentication Method: select: Normal Password click on all the OK's

HI, thanks for the information, I have done what you have asked. That wasnt my problem. With the borysandildi@bigpond.com I can send and receive emails fine. The info@tassiemoments.com cannot receive or send anything and has been that way for a while. When I click on the get messages tab for info@tassiemoments.com it says it is looking up messages, like it cant find it? It doesnt do that with my other email address. Something has gone wrong but I havent changed anything! This is a business email so I need it fixed but dont know what to do! Any help would be great, thank you.

I would suggest you contact the people who host your website.

I tried to visit the website (www.tassiemoments.com) but got a message that the server cannot be found. I notice the domain is fully paid up for at least another year, so you need to find out why your website is not available.

This may explain why you are not getting any emails.

Ok lets look vat this one bit at a time.

You should be sending mail using the tassiemoments server not bigpond. I think I might even be a technical violation of their term of use.. The provider is hedging their bets as many US ISPs block port 25 from home connections. I can vouch for Telstra/Bigpond not doing that as My mail server worked fine until the server blew up at Christmas.

There are significant issues with the server and in particular the mail server with no A record in DNS among other things. See here The page is slow to load as it is testing the configuration of the server at tassiemoments.

The Technical contact for the domain is JOANNE SMITH, WUNDOWIE, WA Perhaps that is where you need to direct your questions.

I have a pop mail account for a website, but in my case they do not offer smtp for the particular hosting package I pay for. So, I have to use my ISP smtp.

As you were using POP and ISP smtp, you may find you are doing the same as me for the same reasons. However, your case may be different.

I rechecked your website this morning - London GMT time - and the website is now up and running. So that's good news.