I had the need to update the email action message (subject) of email actions, and also the email address fields in bulk and this is what I used to do that. Note these are both SQL queries - not SWQL
-- Update the Email Message of Actions -- with the following query UPDATE dbo.ActionsProperties SET dbo.ActionsProperties.PropertyValue = replace (dbo.ActionsProperties.PropertyValue, 'oldval', 'newval') FROM dbo.ActionsProperties INNER JOIN dbo.Actions ON dbo.ActionsProperties.ActionID = dbo.Actions.ActionID WHERE ( dbo.Actions.ActionTypeID = 'Email' AND dbo.ActionsProperties.PropertyName LIKE 'EmailMessage' AND dbo.ActionsProperties.PropertyValue LIKE '%SEARCH-FOR-ME%' AND ( dbo.Actions.Title LIKE '%reset action%' OR dbo.Actions.Title LIKE '%trigger action%' ) ) -- Update the Email Addresses (To, CC, BCC) of Actions -- with the following query UPDATE dbo.ActionsProperties SET dbo.ActionsProperties.PropertyValue = replace (dbo.ActionsProperties.PropertyValue, 'oldval', 'newval') FROM dbo.ActionsProperties INNER JOIN dbo.Actions ON dbo.ActionsProperties.ActionID = dbo.Actions.ActionID WHERE ( dbo.Actions.ActionTypeID = 'Email' AND dbo.ActionsProperties.PropertyValue LIKE '%SEARCH-FOR-ME%' AND ( dbo.ActionsProperties.PropertyName LIKE 'EmailTo' OR dbo.ActionsProperties.PropertyName LIKE 'EmailCC' OR dbo.ActionsProperties.PropertyName LIKE 'EmailBCC' ) )