Email

Mozilla Thunderbird – Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox

Written by Ian Carnaghan · 36 sec read >

Although there are many reasons why this error message might appear, one of the reasons is that the mail account giving the error shares the same inbox as another mail account. In this case it could most likely mean that the Message Store Type is different for each mail account.

To check the message store type  click on Tools->Account Settings

Then click on Server Settings under the specified mail accounts and check the Message Storage Type for each.

Should the Message Storage Types differ for what ever reason change them to be the same.

Follow the steps below to change the Message Storage Type for a email account.

  1. Select Tools->Options

  2. Click on the Advanced Tab and then on Config Editor

  3. Click on I accept the risk!

  4. Search for mail.serverDefaultStoreContractID and change the Message Storage Type to the Message Storage Type of the working mail account.

    MBOX = @mozilla.org/msgstore/berkeleystore;1
    MailDir = @mozilla.org/msgstore/maildirstore;1

  5. Restart Thunderbird.
  6. Remove and re-add the working email account.

Last Updated On April 06, 2018
Written by Ian Carnaghan
I am a software developer and online educator who likes to keep up with all the latest in technology. I also manage cloud infrastructure, continuous monitoring, DevOps processes, security, and continuous integration and deployment. In my spare time I teach undergraduate classes in web development. Profile

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