I know this is not the solution but it is a work around that works! Please make sure you back up the relevan data file for the problem folder first, just in case.
Often when the mismatch message occurs evolution cannot generate a .ev- summary file, especially with large (500+ Meg) files. To overcome the problem for folder FOO Make a new folder FOO1 go to FOO and select all emails Move all mails from FOO to FOO1 select FOO1 (the mismatch error will come up again as you leave FOO) Check all the mails are there. Quit and restart evolution to check the data is there, select FOO1. Then select another folder to make sure the error does not occur on this new file. Delete FOO (you need to expunge it first) Rename FOO1 to FOO Everything should now work. Finally, for good housekeeping check the ~/.evolution/mail/local/Inbox.sbd/....... directory to see that the new files are all listed as FOO. This does not always happen (some will retain the FOO1 element) and it will not cause a problem but will be confusing if you regularly check the evolution directory and file structure so; Instead of renaming FOO1 to FOO Stop then restart evolution Make a new folder FOO Move the files from FOO1 to FOO Stop start and check once more Delete FOO1 Hope this of use to beleaguered evo users -- evolution bug, "Summary and folder mismatch, even after a sync" https://launchpad.net/bugs/27014 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs