This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

How can I increase my allotment for Thunderbird?

  • 4 iimpendulo
  • 1 inayo le ngxaki
  • 2 views
  • Impendulo yokugqibela ngu user01229325

more options

I keep getting a message that I am over the Thunderbird high water mark and should delete messages. I am deleting messages from my in-box, trash, and sent messages every day. If I miss a day deleting, I am over the high water mark again. Do saved messages count in determining the high water mark? How can I increase my allotment of space? John W. Simmons

I keep getting a message that I am over the Thunderbird high water mark and should delete messages. I am deleting messages from my in-box, trash, and sent messages every day. If I miss a day deleting, I am over the high water mark again. Do saved messages count in determining the high water mark? How can I increase my allotment of space? John W. Simmons

All Replies (4)

more options

Can you provide a screen shot of the error message, or quote it verbatim? Thunderbird doesn't use any phrase such as "high water mark", so I suspect this warning comes from your email server.

more options

Do you compact your folders after deleting messages? If not you have not deleted anything. https://support.mozilla.org/en-US/kb/compacting-folders

more options

From: admin

Your mailbox is over the high water mark. Please delete some messages from your mailbox.

I have just compacted folders . Will see if it solves my problem.

Who is my administrator? John Simmons

more options

Ask your email provider. Thunderbird is email client software running on your computer so that makes you the admin over that.