Thunderbird Mailbox is Full + Cannot Hold No More Messages

Did you know Mozilla Thunderbird is a popular open-source email client? A lot of people use it. But that doesn't imply it's never made mistakes. Users most often report being unable to send, receive, & read emails & having a full inbox.

However, it offers free POP3 and IMAP access with message specificity, search, and more.

Ever get the ‘Thunderbird Inbox Full Cannot Receive Email’ error? We think so; thus, you're on our post. Move on to the matter without further ado.

Possible Causes of Thunderbird Inbox Fullness. Cannot handle more Message Errors?

Without regularly wiping Thunderbird accounts.

• Users have many messages, and the system no longer accepts fresh ones.
• Thunderbird mailbox folders never surpass 4GB; therefore, this can be the culprit.
• Thunderbird storage files were deleted or blocked by antivirus or firewall.
• When Thunderbird MBOX files fail.

Solution For Error: Full Thunderbird inbox Cannot Store Further Messages

This error indicates that your inbox has reached its maximum and is unable to hold more messages. The main method is to remove junk messages & receive fast remedies. According to different instances, we included these probable fixes: Scroll to read.

1. Deleting

1. Uninstalling and installing is wrong. Thunderbird does not need to be installed or uninstalled to address mail folder issues. Thus, deleting or moving complete Thunderbird inbox emails is the easiest option to fix the problem.
2. However, users can convert or migrate the new emails to another format for easy use in another client. Moving and deleting empty the inbox folder.
3. Transferring Inbox data to a listing folder is possible. Simple effort transfers messages in batches. Simply press shift to advance from the first to the last email. After finishing, transfer it to another folder. After transferring all messages, the inbox will be empty and have room for incoming emails.
4. Know users can delete the device's inbox mailbox from the local drive? Thunderbird stores POP messages on the system's local disk. Just duplicate this file before removing, it so users can use it later. After restarting Thunderbird, the blank Inbox will no longer show the “Inbox is full” message.

2. Compression

1. Thunderbird automatically deletes wasted emails from the inbox. Thunderbird users must “compact” folders to erase all files.
2. Directory compacting is essential. Any user who doesn't compress the directory will see problems as it grows. Users must often compress all email folders.
3. This can be done weekly or monthly if preferred. The rapid method requires habit. Thunderbird will repeatedly display the Full Error if this is not done.

3. Rename Your mailbox.

• Indeed, “Inbox” files can be renamed. Explorer lets users rename emails instead of deleting them. It lets the software run normally. It can temporarily restore mail flow.
• Explorer additionally predisposes every object to a document with the same name and MSF extension. Index files in directories can be deleted if the file name is changed. Thunderbird creates an index. Even after removal, it keeps index issues distinct.

4. Fix the Mistake with an Expert Tool

The problem prevents users from reading fresh emails, yet you have MS Outlook. The BLR Tools MBOX File Converter Tool can swiftly convert MBOX files to Outlook's PST format. BLR Tools is a broad utility that can convert Thunderbird to Outlook and many other email formats, including EML, EMLX, MSG, and others. Users can transfer numerous clients using it.