===== Maximum number of recipients =====


LUCY is designed to work with over 500'000 parallel recipients on one instance. This will require a [[hardware|hardware]] with sufficient [[hardware|RAM & CPU]]. 


===== Test your instance =====

If you are not sure if your hardware meets the campaign requirements you can run the build in test module. It allows you to run a performance test in order to verify if your hardware can handle the amount of recipients. It will also check the Campaign Settings.

{{:perf_1.png?600|}}

Once the test has finished, you can see the detailed report which will tell you, how many recipients your sever is able to handle within reasonable time frames.

{{:perf_2.png?600|}}

**Note**: Perfomance Test might take a while, so be patient and avoid using the LUCY server during the test.