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Thunderbird says ive used 55000kb of 55000kb.

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I am getting Bounced messages back to the sender saying my mailbox is full. I Ive deleted many emails and it is still happening. I contacted my provider, suddenlink.net, who says this is a Thunderbird problem

I am getting Bounced messages back to the sender saying my mailbox is full. I Ive deleted many emails and it is still happening. I contacted my provider, suddenlink.net, who says this is a Thunderbird problem

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Thunderbird has no quotas. Thunderbird has no facility to bounce messages. Email providers set quotas. Email providers servers bounce messages. Your providers help desk is staffed by idiots.

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After deleting messages did you Compact your folders? If not do that.