APRS messages are stored for 14 days. It is possible to search using wildcards (*?) after a prefix.
2024-05-18 19:30:15 EDT: W4JST>AE4TC-7: Hi from Niagara Falls 2024-05-18 19:31:32 EDT: KB2HSH>W4JST: Greetings from Buffalo NY USA [UISS] 2024-05-18 19:32:34 EDT: KB2HSH>W4JST: Greetings from Buffalo NY USA [UISS] 2024-05-18 19:57:55 EDT: W4JST>KB2HSH: thanks!