Use of comma's

[Unregistered]

I consider my english to be average, perhaps slightly above!

But i'm not very good at recognising when commas should be used.

Can someone please review this for me and see whether I should have used commas? It seems a bit long to me without use of a comma.

"Apologies for contacting you again regarding feedback of the Business Process document"

Thanks

 

[Horsa]

I would change 'of' to 'on', but don't see any reason to insert a comma. It is however quite informal and suggests that you have an informal relationship with your correspondent