Thunderbird may crash because of attachments due to various reasons such as corrupted or incompatible attachment files, conflicts with other installed add-ons or plugins, insufficient system resources, or issues with the Thunderbird program itself. Large or numerous attachments can also overwhelm the program and cause it to crash. It is recommended to update Thunderbird to the latest version, disable unnecessary add-ons, and ensure that attachments are not too large or in a problematic file format to prevent crashes. **

To mark attachments in Thunderbird, you can simply hover your mouse over the attachment in the email. A small toolbar will appear with options to save, open, or detach the attachment. You can also right-click on the attachment to access additional options such as marking it as important or opening it with a specific application. Additionally, you can customize Thunderbird's settings to automatically mark certain types of attachments for easier identification. **

The Thunderbird filters may not work due to several reasons. One common reason is that the filter criteria are not set up correctly, leading to the filters not being able to accurately identify and sort incoming emails. Another reason could be that the filters are not enabled or are disabled, preventing them from automatically sorting incoming emails. Additionally, if the Thunderbird software is not updated to the latest version, it may cause issues with the filters' functionality. Lastly, there could be a technical issue or bug within the Thunderbird software that is affecting the filters' performance. **

To search for attachments in Thunderbird, you can use the search bar at the top of the Thunderbird window. Simply type in the file extension of the attachment you are looking for (e.g. .pdf, .docx) or the name of the file. Thunderbird will then display all emails containing attachments that match your search criteria. You can also use the Advanced Search feature in Thunderbird to narrow down your search by specifying criteria such as sender, recipient, or date. **

To automatically empty Thunderbird folders, you can create a message filter that moves emails from a specific folder to the Trash folder. This can be done by setting up a filter rule based on criteria such as sender, subject, or keywords. Once the filter is created, Thunderbird will automatically move matching emails to the Trash folder, effectively emptying the selected folder. Additionally, you can schedule Thunderbird to empty the Trash folder at regular intervals by going to Tools > Options > Advanced > Network & Disk Space and setting the desired frequency for emptying the Trash folder. **

The problem with attachments in Thunderbird 78140 is that users have reported issues with attachments not being displayed or opened correctly. Some users have experienced attachments showing up as garbled text or not being able to open them at all. This can be frustrating for users who rely on Thunderbird for handling their email attachments efficiently. **

Thunderbird is sent as a subfolder of the inbox because it is a default setting in the Thunderbird email client. This organization helps users easily locate their sent emails within the inbox, making it convenient to track and manage email conversations. Additionally, having the sent folder as a subfolder of the inbox allows for a more streamlined and intuitive email management experience for users. However, users can customize this setting and choose to have the sent folder as a separate entity outside of the inbox if they prefer. **

The maximum number of file attachments in Thunderbird is limited to 100 files per email. This means that you can attach up to 100 individual files to a single email message in Thunderbird. Exceeding this limit may result in performance issues or errors when sending the email. It is recommended to keep the number of attachments within this limit to ensure smooth transmission of your email messages. **