Dear Sir,
I am high end user of gmail. I am also ready to pay any reasonable amount to purchase any backup service which can solve my following problems:
I am searching for the software or service on the internet since 3 years to backup my gmail account completely. I am surprised I am unable to do so. Difficulties with Thunderbird method is that it treats labels as folders, gmail backup is that it do not support multiple labels in good and too much buggy, Backupify online service do not support multiple gmail labels, other softwares I also purchased but no luck.
I am stuck with following requirements:
1. HOW CAN I BACKUP MULTIPLE LABELS which were applied to a single email?? Then I must be able to restore it to other account of gmail.
(very important) (90% of my emails having more than 5 gmail labels etc….)

2. How can I backup multiple gmail from's? eg when I go to my compose mail option, I setup about 80 to 100 email accounts in my gmail so I get them in my "From" option in a combo box.
and

3. How can I use multiple from's of gmail those were setup in gmail in Thunderbird etc.?

4. When I go for backing my whole account. Gmail blocks my account after 24 hours as It has already taken a lot of bandwidth. Gmail backup hangs or goes in infinite loop after few hours when I backup datewise.
how can I solution of this problem?

5. How can I backup my email filter settings those I setup in my gmail account as they are in 100s. It will be really a tedious job.

Please Also Include:
Operating system (e.g. WinXP): Windows 7
Program and version you use to access Gmail (e.g. Internet Explorer 7 or Outlook 2003): Anything
Your antivirus software (e.g. Norton 2007): Norton 2011
Any extensions, toolbars or plug-ins: None