re :Can I stop or change the format that Thunderbird uses to save the files. If you receive an attachment which is an image, it will have been sent to you in a particular format by the sender. This is determined by the image filename extension. If you click on attachment and choose to save the file to a folder on your computer, a pop up window will allow you to choose where to save the file on your computer (not in Thunderbird). Thunderbird will auto input the filename as sent to you, but you can manually change the filename and extension before saving.

Or you can save the file as is and then open the image using suitable software and save as eg: jpeg image.

Thunderbird does not determine how you choose to save the file. In some circumstances you should be careful when changing the format of documents. If unsure save in the same format and use suitable software to open for viewing and then use File > 'Save as' an alternative. Then open the newly saved file to check it is ok.

You can choose what program to use when opening images sent to you as attachments.

Check the settings you currently have saved. Menu icon > Options > Attachments > 'Incoming' tab Locate the type of file in the left pane. For example: JPG file (image/jpeg: .jpg) on the right it will say what action is currently used to open the file. Click on the option to see drop down options. If you use Windows 10 then select 'Use TWINUI (default)'

PNG file (image/png: .png) also set to use 'Use TWINUI (default)'

In the same window, at the bottom, you can choose where to save files. Suggest you select the option 'Always ask me where to save files' as this gives you more control. Click on 'OK'

"If you click on attachment and choose to save the file to a folder on your computer, a pop up window will allow you to choose where to save the file on your computer (not in Thunderbird)."

 Hi ,I understand what you are saying, but when I am writing email using Thunderbird and I click on attach , the next page that opens , the page where the file is uploaded from is also a thunderbird page and recently all the image files there are in PNG. If I go to Finder , I am using a mac , they are in the right format , JPEG etc , but I can't attach from there , only from the Thunderbird page. If I change the file in Finder to JPEG , it also changes on the attach file in Thunderbird, but the file , even when marked JPEG can't be open for review. If I right click or double click to open , it gives me a popup with the choice to save , which has already been done. This problem has only started recently , a couple of weeks ago. I have looked through a lot of the settings in Thunderbird and Mac OS but can't find what has changed. Sorry if my reply is late , I am in Australia.

Hi , I can't find then menu you have indicated , options>attachments>incoming. I am using MAC OS and Yandex browser.

re: Menu icon > Options > Attachments > 'Incoming' tab By default, forum responses are for Windows users as they tend to be in the majority of cases. As you use a MAC, it would be helpful to mention this whenever you ask a question, so reponses can be tailored more for you.

MAC users: Thunderbird > Preferences > Attachments > 'Incoming' tab Check the various documents are using the correct program to open them.

re :the page where the file is uploaded from is also a thunderbird page When you click on 'attach', a window will open on the last folder directory location from which you 'attached' a file, but you should be able to navigate to any location on your computer eg: to where the jpg files are located. You do not have to attach anything from the directory shown.

Try clearing the old stored preference. Thunderbird > Preferences > Advanced > 'General' tab click on 'Config Editor..' button It will say be careful :) In top search type: attach.dir Right click on this line: mail.compose.attach.dir and select 'Reset' to clear the string. Close window Click on 'OK'

Click on 'Write' Click on 'Attach' a window opens so you can navigate to the folder storing the image you want to attach.

Hi ,that worked fine thanks so much for for helping out a senior citizen who is still struggling at times with the cyber world , Kind Regards, Brad