How many alerts, tasks and field updates can I associate to a workflow rule?
You can associate a maximum of 5 alerts, 5 tasks and 3 field updates to each action (Instant or Scheduled) to a workflow rule. However, this count varies on edition you are using.In the Free Edition, you can associate a maximum of 5 alerts and 5 tasks to a workflow rule. This applies only to instant actions.The Standard Edition lets you associate a maximum of 5 alerts, 5 tasks and 3 field updates, which also applies only to instant actions.In the Professional Edition, you can associate a maximum of 5 alerts, 5 tasks, 3 field updates and 1 web hook to a workflow rule. This also applies only to instant actions.The Enterprise and other Editions let you associate 5 alerts, 5 tasks, 3 field updates, 1 web hook and 1 custom function. This is applicable to an instant action and 5 scheduled actions.
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