Julie Love, of Maryhill, who set up the charity DAYNA - Death Abroad You Are Not Alone - is urging them to get involved with a new Foreign Affairs Select Committee set up to look at the consular assistance provided to bereaved families.
The 45-year-old has campaigned for greater Government support for bereaved families since the death of her son Colin, 23, in a drowning accident off Venezuela in 2009.
The overseas deaths of people from England and Wales are examined by inquests at coroners' courts. But in Scotland, it is up to the Crown Office whether to hold a Fatal Accident Inquiry.
Julie said: "Anyone who has had dealings with the Foreign Office or British embassies overseas should respond to this."
A live web forum has been created. The deadline to respond is tomorrow.