If anyone is interested, here is the current split
on network mail software in use on the network:

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Statistics for:                   4/93        7/93        2/94
                                  ~~~~        ~~~~        ~~~~
.QWK-Type Systems:                 71          80          75
PCRelay Systems:                   16          15           3
NetMail Systems:                    4           4           1
National HUB:                       1           1           1
                                 ------      ------      ------
Total Systems on the Network:      92         100          80

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Hub Statistics for:               4/93        7/93        2/94
                                  ~~~~        ~~~~        ~~~~
National Hub:                       1           1           1
Regional Hubs:                     16          17          16
Local Hubs:                         9           9           6
Cross-Network Links:                2           2           1
                                 ------      ------      ------
Total Hubs on the Network:         28          29          24

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Mail Programs Run by Hubs for:    4/93        7/93        2/94
                                  ~~~~        ~~~~        ~~~~
.QWK Mailers:                      23          24          23
PCRelay 4.1:                        8           7           2
NET/Mail 4.0+:                      4           5           1

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