In order to assist you best please elaborate a bit more on your scenario.
1. What issues are you facing with?
2. Do you use web-based mail client?
3. Send us the execution log.
4. Also can you please record a Jing video demonstrating the issue, so we can better understand what is happening?
Basically this is a standard web test. This functionality can be achieved with a regular Test Studio recording/playback.
Please give as much information as it is possible.
Hope to hear from you soon.
the Telerik team