To write thank you notes for sympathy, keep it simple and sincere. Writers should let the person know how thankful they are for any offered help or sympathy during this hard time.
Sympathy thank you notes should be sent out within 2 months of the loss, though there is no set amount of time. For big services, it is not necessary, or possible, to send every guest a thank you note. When this occurs, thank you notes should be sent to the pallbearers, friends and family who helped organize the service, and those who speak at the service. The clergy should also be thanked.