Instead of SSDI, consider AlumniFinder's Deceased Append.

Since November 1, 2011 the source of the Social Security Death Index (SSDI) no longer contains “protected” records the SSA receives from states. Roughly 4.2 million of the 89 million deaths in the Death Master File were removed, and approximately 1 million fewer deaths will be added each year.

The good news is there’s a solution: AlumniFinder’s Deceased Append. With the names of over 40 million deceased individuals, AlumniFinder has access to the most reliable data resource available. Our deceased append will accurately identify only those individuals' names that should be suppressed and removed from a mailing list, leaving you with not only a more up-to-date list, but also the cost savings on your next campaign.

Deceased Individual Flag Append Service

To ensure that the names of deceased individuals are removed from direct marketing lists prior to a new mailing campaign, marketers can use the Deceased Individual Flag Append Service. This prevents unwanted mail from being sent to members of the deceased's household. Our file contains the names of over 40 million deceased individuals. When compared against other files, it typically helps to identify from one to three percent of the individuals in a file as being deceased. Part of this service is the Anchor's Deceased Probability IndexTM, and approach accurately identifies only those individuals' names that should be suppressed and removed from a mailing list. This not only improves your response rate, but also lowers costs, and can help improve a company's image by showing sensitivity to this important issue.