Please post your Troubleshooting Information. At the top right of the Thunderbird window, click the menu button , then select Help > Troubleshooting Information. Press the "Copy text to clipboard button" and paste the information into your reply.

Have tried to upload screenshots but uploading froze Thunderbird version 52.9.1(32 bit)

This is a web forum. You cannot upload screenshots to this forum using Thunderbird.

Thanks, firstly I didn't try using Thunderbird to upload screenshots,. I clicked on "Browse" under "Add images", found the first image and clicked on it. It then said "uploading" and the spinning timer started and went on, and went on, and went on, and on - - - - so I just clicked on post reply.. I read somewhere that I should include details of various items, such as what version of Thunderbird, that;s why I wrote that , I wrote it on separate lines but the web forum ran it all together and led you to misinterpret it.

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Additionally, I did find a phone number for gmail, but when I phoned it, they said that the phone number was for technical services only not for user support. I can't find any way of contacting gmail for support. I did this because gmail told me that they had prevented me sending an email and despite me telling them that the "attempted third party access" was i me, they are still blocking me.

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See contradictory screenshots.

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There doesn't seem to be any way of getting gmail to sort it out. The gmail guy I did talk to told me to get help from mozilla, but personally, I still think it's gmail blocking me,

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Please find below troubleshooting information as requested.

 Application Basics

   Name: Thunderbird
   Version: 52.9.1
   User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1
   Profile Folder: Open Folder

             (Local drive)
   Application Build ID: 20180709124824
   Enabled Plugins: about:plugins
   Build Configuration: about:buildconfig
   Memory Use: about:memory
   Profiles: about:profiles

 Mail and News Accounts
   account2:
     INCOMING: account2, , (none) Local Folders, plain, passwordCleartext

   account10:
     INCOMING: account10, , (imap) imap.gmail.com:993, SSL, OAuth2
     OUTGOING: , smtp.gmail.com:465, SSL, OAuth2, true

   account12:
     INCOMING: account12, , (imap) imap.gmail.com:993, SSL, OAuth2
     OUTGOING: , smtp.gmail.com:465, SSL, passwordCleartext, true

 Crash Reports

 Extensions
   Lightning, 5.4.9.1, true, {e2fda1a4-762b-4020-b5ad-a41df1933103}

 Important Modified Preferences

   Name: Value

     accessibility.typeaheadfind.flashBar: 0
     browser.cache.disk.capacity: 358400
     browser.cache.disk.filesystem_reported: 1
     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
     dom.apps.reset-permissions: true
     extensions.lastAppVersion: 52.9.1
     font.internaluseonly.changed: true
     font.name.monospace.el: Consolas
     font.name.monospace.x-cyrillic: Consolas
     font.name.monospace.x-unicode: Consolas
     font.name.monospace.x-western: Consolas
     font.name.sans-serif.el: Calibri
     font.name.sans-serif.x-cyrillic: Calibri
     font.name.sans-serif.x-unicode: Calibri
     font.name.serif.el: Cambria
     font.name.serif.x-cyrillic: Cambria
     font.name.serif.x-unicode: Cambria
     font.name.serif.x-western: Cambria
     font.size.fixed.el: 14
     font.size.fixed.x-cyrillic: 14
     font.size.fixed.x-unicode: 14
     font.size.fixed.x-western: 14
     font.size.variable.el: 17
     font.size.variable.x-cyrillic: 17
     font.size.variable.x-unicode: 17
     font.size.variable.x-western: 14
     mail.openMessageBehavior.version: 1
     mail.winsearch.firstRunDone: true
     mailnews.database.global.datastore.id: 74ddaee0-546c-4682-953a-f8b60561ccb
     media.gmp.storage.version.observed: 1
     network.cookie.prefsMigrated: true
     network.predictor.cleaned-up: true
     places.database.lastMaintenance: 1532767849
     places.history.expiration.transient_current_max_pages: 122334
     plugin.importedState: true
     security.sandbox.content.tempDirSuffix: {b747e285-83ba-4d58-a87b-f559265ed7e8}

 Graphics

     GPU #1
     Description: Intel(R) HD Graphics 5500
     Vendor ID: 0x8086
     Device ID: 0x1616
     RAM: Unknown
     Drivers: igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32
     Driver Version: 20.19.15.4703
     Driver Date: 6-9-2017

     Features
     Direct2D: false
     DirectWrite: true (10.0.17134.1)
     WebGL Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 5500 Direct3D9Ex vs_3_0 ps_3_0) -- OpenGL ES 2.0 (ANGLE 2.1.0.2a250c8a0e15)

     AzureCanvasBackend: skia
     AzureCanvasAccelerated: 0
     AzureFallbackCanvasBackend: cairo
     AzureContentBackend: skia

 JavaScript

 Incremental GC: 1

 Accessibility

   Activated: 0
   Prevent Accessibility: 0

 Library Versions

     Expected minimum version
     Version in use

     NSPR
     4.13.1
     4.13.1

     NSS
     3.28.6
     3.28.6

     NSS Util
     3.28.6
     3.28.6

     NSS SSL
     3.28.6
     3.28.6

     NSS S/MIME
     3.28.6
     3.28.6

I have to ask why you are reporting the fact your gmail account is blocked here. This is a problem alright, between you and Google. Thunderbird involvement is entirely coincidental.

You may also find that similar issues will continue whilst ever you use a VPN. Google look at the geo location of your IP address and block those that look improbable, like you always connect from Anchorage Alaska, but now your VPN is reporting Cairo, Los Angeles or Cape Town.

I would also suggest that you update the outgoing server used on the on the second account to use oAuth2.0. It might make a difference. Who really knows with Google. oAuth is their preferred authentication method. Using a password requires that the "less secure apps" setting be enabled and they probably "helped" you by turning it off when you verified it was/was not you. So you are all set except they tricked you into disabling the password you used on that account.

Thanks again, I reported the problem here because Gmail advised me to do that. I did think that the problem was with Google and not Thunderbird but thought you might have some insight. It does seem impossible to get any support from Google and it was support I was looking for.

Thanks for the suggestions about oAuth and "less secure apps". I will check if they have switched less secure apps off,

I have been a dedicated user of Thunderbird and Firefox for some years and I also understand that it is easy to misinterpret the motives and feelings behind what someone writes in the absence of body language and non-verbal cues, but I have sought support from you and, the responses I've received I find patronising and unsympathetic, if not insulting.

You need to be able to get access to the webmail account first. Can you access that gmail email address webmail account using a browser ? Did you try using https://accounts.google.com/DisplayUnlockCaptcha

Hi and thanks, I have no problem accessing my webmail account and can receive and send emails using that facility.

I guess when you access the webmail account it doesn't matter what device you use or what your IP address is. I only have the problem on Thunderbird and only on one of my devices, I only use my VPN service on that one device, which I guess is why Google only blocked that device. Though it is funny that I have a second gmail account which I access using the same device with the same VPN as the blocked account and that second account isn't blocked. I guess it;s all done automatically and doesn't involve any actual human agent and when it gets screwed up no human noticed ty and it doesn't seem possible to contact any google human Perhaps there aren;t any google humans, just AE. I wrote to Arnold Schwarzenegger about it, but he didn't get back to me.

Problem solved, I must have turned on 2 step verification and with that on, you can't allow less secure apps. I turned off 2 step verification and I can now send