Safeguard Your Digital Estate If you died, what would happen to your email archives, social profiles and online accounts? Share | Related Content When Do You Need a Will? When do you need a will? The answer is easy: Right Now. Put It in a Letter A letter of instruction provides additional and more personal information regarding your estate. What Is My Life Expectancy? Estimate how many years you may need retirement assets or how long to provide income to a surviving spouse or children.