Thunderbird - Increase the Disk Cache

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By default Thunderbird make use of 50MB of disk cache.
But you can increase it, here's how
  • Open Thunderbird
  • Click on Tools> Options> Network&DiskSpace
  • In the Disk Space section simply increment the value to your convenience.
  • Validate with the OK button.

Note that: You can also clear the disc cache through this menu!

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