If you’ve found this post by search, you’ve likely already gone into the workflow settings for a particular list or document library item and have clicked the info icon () next to “Internal status” and found that your workflow is “in progress”, but has an error: “Access Denied. You do not have permission to perform this action or access this resource.” Peering into the bulk of the message, you see a helpful tidbit that includes sp.utilities.utility.SendEmail. This could be from a number of causes, but here are the summaries of three possible solutions. Note that the first solution is still required even if you try B or C below. I’ve only included the second and third solutions as additional possibilities if the first doesn’t solve your problem.
A common question, before we begin, is what level of permissions any individual needs to be able to send an email or start a workflow generally. It doesn’t matter so much if you’re using Impersonation or App Steps, but the quick answer is a minimum of Contribute level permissions is good.