I have a custom list and i would like to send an email out suing workflow every friday at a particular time. I have been sending email via worklflow but i can't find anything that can solve this request. Thanks in Advance
Workflow events trigger when something happens to the system.
The ideal way to solve your problem would be to create a custom job definition
But maybe you dont have server access? So you need two things.
1. A trigger list
Attach your workflow to this list. The last action should be to delete the trigger item. (see next step)
2. A scheduler
This could be windows scheduler or something else. Set it to run every friday (or as you need) It would call a script, that would create a new item in your list using web services. That should trigger your workflow, where you send your email