- Send on – to send something from an old address to the new one ‘Radek asked
me to send on any mail to his new address after I moved into the house’. - Heaven sent – coming at a perfect time ‘Thr new job offer was heaven sent
– I was thinking about finding something else and this comes along just like that’. - A send off – good wishes or actions toward a person before they go on a journey or to start a new life elsewhere.
- Send up – imitate someone in a foolish or ironic way.
- Send for – order or request something or someone is sent to you.
- Send someone packing – kick someone out of your home or business.
- Send someone to Coventry -stop speaking to someone or avoid their company
– this idiom is a bit old-fashioned and has been replaced with the term ‘to ghost someone’.
English (UK) 
Polski