APRS messages are stored for 14 days. It is possible to search using wildcards (*?) after a prefix.
2024-05-31 13:27:18 EDT: KA0VEL>KA0VEL-7: test test test 2024-05-31 13:27:57 EDT: KA0VEL>KA0VEL-7: the test was successful.... glad to see it working 2024-06-01 11:55:34 EDT: KA0VEL>KA0VEL-7: testing message to FT1DR... this is a test..