Recently I applied security patch 6788 on magento store, but there are some issues after installation like some blockes disappeared from home page and sales emails are in spam/junk folder.
I was able to fix blocks issue but could not solve spam emails.
I have tried different threads on internet, but it did not help. thanks in advance.
Blocks disappearing are due to the need now to register variables and CMS blocks in a whitelist for inclusion in templates. You will need to read through your home page content for entries similar to {{block type="cms/block"}} and add the type (in this case cms/block) to the whitelist in System =>Permissions =>Blocks
Applying SUPEE-6788, it removes static block on home page