> For the complete documentation index, see [llms.txt](https://docs.emaillabs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emaillabs.io/en/email/email-api/tag-report/compare-tags.md).

# Compare Tags

The ‘Tag Comparison’ feature allows you to select and compare multiple tags to assess their effectiveness based on assigned statuses. This is particularly useful for A/B testing in email campaigns, as it helps determine which version of a message or group of communications performs better. With this function, you can compare key metrics such as the number of opens or link clicks, providing a clear view of the effectiveness of tagged messages and supporting the optimization of marketing efforts.