z2g

A script for converting exported Zimbra mail filter files (in sieve format) to a format that can be imported into Gmail filters.

Usage:

% npm install -g z2g
% z2g 'My Name' '[email protected]' filters.sieve > mailFilters.xml

Caveats

WARNING: The conversion is lossy.

There are a bunch of aspects of Zimbra mail filters that don't translate fully to Gmail filters:

• Gmail seems to disregard special characters in search strings, so you might find some rules overmatch if you were counting on them only matching special characters. I've run into this with subject prefixes like "[Foo]" and the brackets get ignored, so emails that simply mention "Foo" in the subject get matched.

• Gmail doesn't have functionality for short-circuiting any remaining rules when a given rule matches. Gmail does match rules in order, but it applies all matching rules no matter what. There are ostensibly tricks for preventing subsequent rules for matching--something to do with applying labels that force subsequent rules not to match--but I haven't tried them.

There are also bound to be lots of bugs. Please ping me on IRC and I'll try to fix them! My nick is dherman.