this might be the debugging info you need. Does this help?
# coredumpctl gdb 4102
PID: 4102 (geary)
UID: 1000 (johny)
GID: 1000 (johny)
Signal: 5 (TRAP)
Timestamp: Mon 2019-10-14 12:28:09 PDT (34min ago)
Command Line: geary
Executable: /usr/bin/geary
Control Group: /user.slice/user-1000.slice/session-1.scope
Unit: session-1.scope
Slice: user-1000.slice
Session: 1
Owner UID: 1000 (johny)
Boot ID: 059b0a211bf4490a90ce46131b2515ee
Machine ID: e008ffcf738b49b7ae5ce83c023c0ab7
Hostname: myegg
Storage: /var/lib/systemd/coredump/core.geary.1000.059b0a211bf4490a90ce46131b2515ee.4102.1571081289000000000000.lz4
Message: Process 4102 (geary) of user 1000 dumped core.
Stack trace of thread 4102:
#0 0x00007fb3d89681c6 n/a (libglib-2.0.so.0)
#1 0x00007fb3d896511b g_log_structured_standard (libglib-2.0.so.0)
#2 0x00005586a76c7b1d application_controller_construct_co (geary)
#3 0x00007fb3d82f8c24 n/a (libgio-2.0.so.0)
#4 0x00007fb3d82fe447 n/a (libgio-2.0.so.0)
#5 0x00005586a76d1c93 secret_mediator_construct_co (geary)
#6 0x00007fb3d82f8c24 n/a (libgio-2.0.so.0)
#7 0x00007fb3d82fe447 n/a (libgio-2.0.so.0)
#8 0x00005586a76d15ed secret_mediator_check_unlocked_co (geary)
#9 0x00007fb3d82f8c24 n/a (libgio-2.0.so.0)
#10 0x00007fb3d82fe447 n/a (libgio-2.0.so.0)
#11 0x00007fb3d2fb74e5 n/a (libsecret-1.so.0)
#12 0x00007fb3d82f8c24 n/a (libgio-2.0.so.0)
#13 0x00007fb3d82fe447 n/a (libgio-2.0.so.0)
#14 0x00007fb3d2fb0d85 n/a (libsecret-1.so.0)
#15 0x00007fb3d82f8c24 n/a (libgio-2.0.so.0)
#16 0x00007fb3d82fe447 n/a (libgio-2.0.so.0)
#17 0x00007fb3d829f4bb n/a (libgio-2.0.so.0)
#18 0x00007fb3d82f8c24 n/a (libgio-2.0.so.0)
#19 0x00007fb3d82fe447 n/a (libgio-2.0.so.0)
#20 0x00007fb3d82adc15 n/a (libgio-2.0.so.0)
#21 0x00007fb3d82f8c24 n/a (libgio-2.0.so.0)
#22 0x00007fb3d82f8c59 n/a (libgio-2.0.so.0)
#23 0x00007fb3d896e2cf g_main_context_dispatch (libglib-2.0.so.0)
#24 0x00007fb3d8970211 n/a (libglib-2.0.so.0)
#25 0x00007fb3d8970251 g_main_context_iteration (libglib-2.0.so.0)
#26 0x00007fb3d82db9de g_application_run (libgio-2.0.so.0)
#27 0x00005586a75fe364 _vala_main (geary)
#28 0x00007fb3d2b0b153 __libc_start_main (libc.so.6)
#29 0x00005586a75fe21e _start (geary)
Stack trace of thread 4109:
#0 0x00007fb3d2bd89ef __poll (libc.so.6)
#1 0x00007fb3d8970180 n/a (libglib-2.0.so.0)
#2 0x00007fb3d8971123 g_main_loop_run (libglib-2.0.so.0)
#3 0x00007fb3d77fc7a2 _ZN3WTF7RunLoop3runEv (libjavascriptcoregtk-4.0.so.18)
#4 0x00007fb3d779d3f9 _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
#5 0x00007fb3d77fcbea n/a (libjavascriptcoregtk-4.0.so.18)
#6 0x00007fb3d2cb64cf start_thread (libpthread.so.0)
#7 0x00007fb3d2be32d3 __clone (libc.so.6)
Stack trace of thread 4114:
#0 0x00007fb3d2bdde9d syscall (libc.so.6)
#1 0x00007fb3d892111b g_cond_wait_until (libglib-2.0.so.0)
#2 0x00007fb3d899ef63 n/a (libglib-2.0.so.0)
#3 0x00007fb3d894613b n/a (libglib-2.0.so.0)
#4 0x00007fb3d894cc11 n/a (libglib-2.0.so.0)
#5 0x00007fb3d2cb64cf start_thread (libpthread.so.0)
#6 0x00007fb3d2be32d3 __clone (libc.so.6)
Stack trace of thread 4103:
#0 0x00007fb3d2bd89ef __poll (libc.so.6)
#1 0x00007fb3d8970180 n/a (libglib-2.0.so.0)
#2 0x00007fb3d8970251 g_main_context_iteration (libglib-2.0.so.0)
#3 0x00007fb3d89702a2 n/a (libglib-2.0.so.0)
#4 0x00007fb3d894cc11 n/a (libglib-2.0.so.0)
#5 0x00007fb3d2cb64cf start_thread (libpthread.so.0)
#6 0x00007fb3d2be32d3 __clone (libc.so.6)
Stack trace of thread 4105:
#0 0x00007fb3d2bd89ef __poll (libc.so.6)
#1 0x00007fb3d8970180 n/a (libglib-2.0.so.0)
#2 0x00007fb3d8970251 g_main_context_iteration (libglib-2.0.so.0)
#3 0x00007fb3cc899e5e n/a (libdconfsettings.so)
#4 0x00007fb3d894cc11 n/a (libglib-2.0.so.0)
#5 0x00007fb3d2cb64cf start_thread (libpthread.so.0)
#6 0x00007fb3d2be32d3 __clone (libc.so.6)
Stack trace of thread 4106:
#0 0x00007fb3d2cbcc45 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
#1 0x00007fb3d166e1b1 __gthread_cond_wait (libstdc++.so.6)
#2 0x00007fb3d780afdc _ZN7bmalloc9Scavenger13threadRunLoopEv (libjavascriptcoregtk-4.0.so.18)
#3 0x00007fb3d780b2ba _ZN7bmalloc9Scavenger16threadEntryPointEPS0_ (libjavascriptcoregtk-4.0.so.18)
#4 0x00007fb3d1673ed4 execute_native_thread_routine (libstdc++.so.6)
#5 0x00007fb3d2cb64cf start_thread (libpthread.so.0)
#6 0x00007fb3d2be32d3 __clone (libc.so.6)
Stack trace of thread 4107:
#0 0x00007fb3d2cbcf7a pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
#1 0x00007fb3d77fd616 _ZN3WTF15ThreadCondition9timedWaitERNS_5MutexENS_8WallTimeE (libjavascriptcoregtk-4.0.so.18)
#2 0x00007fb3d7798fc5 _ZN3WTF10ParkingLot21parkConditionallyImplEPKvRKNS_12ScopedLambdaIFbvEEERKNS3_IFvvEEERKNS_24TimeWithDynamicClockTypeE (libjavascriptcoregtk-4.0.so.18)
#3 0x00007fb3d779c74d _ZN3WTF5sleepENS_7SecondsE (libjavascriptcoregtk-4.0.so.18)
#4 0x00007fb3d3b44cb6 n/a (libwebkit2gtk-4.0.so.37)
#5 0x00007fb3d779d3f9 _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
#6 0x00007fb3d77fcbea n/a (libjavascriptcoregtk-4.0.so.18)
#7 0x00007fb3d2cb64cf start_thread (libpthread.so.0)
#8 0x00007fb3d2be32d3 __clone (libc.so.6)
Stack trace of thread 4108:
#0 0x00007fb3d2bd89ef __poll (libc.so.6)
#1 0x00007fb3d8970180 n/a (libglib-2.0.so.0)
#2 0x00007fb3d8971123 g_main_loop_run (libglib-2.0.so.0)
#3 0x00007fb3d77fc7a2 _ZN3WTF7RunLoop3runEv (libjavascriptcoregtk-4.0.so.18)
#4 0x00007fb3d779d3f9 _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
#5 0x00007fb3d77fcbea n/a (libjavascriptcoregtk-4.0.so.18)
#6 0x00007fb3d2cb64cf start_thread (libpthread.so.0)
#7 0x00007fb3d2be32d3 __clone (libc.so.6)
Stack trace of thread 4112:
#0 0x00007fb3d2bdde9d syscall (libc.so.6)
#1 0x00007fb3d892111b g_cond_wait_until (libglib-2.0.so.0)
#2 0x00007fb3d899ef63 n/a (libglib-2.0.so.0)
#3 0x00007fb3d894613b n/a (libglib-2.0.so.0)
#4 0x00007fb3d894cc11 n/a (libglib-2.0.so.0)
#5 0x00007fb3d2cb64cf start_thread (libpthread.so.0)
#6 0x00007fb3d2be32d3 __clone (libc.so.6)
Stack trace of thread 4115:
#0 0x00007fb3d2bd89ef __poll (libc.so.6)
#1 0x00007fb3d8970180 n/a (libglib-2.0.so.0)
#2 0x00007fb3d8971123 g_main_loop_run (libglib-2.0.so.0)
#3 0x00007fb37d1a67b3 n/a (libedataserver-1.2.so.24)
#4 0x00007fb3d894cc11 n/a (libglib-2.0.so.0)
#5 0x00007fb3d2cb64cf start_thread (libpthread.so.0)
#6 0x00007fb3d2be32d3 __clone (libc.so.6)
Stack trace of thread 4116:
#0 0x00007fb3d2bd89ef __poll (libc.so.6)
#1 0x00007fb3d8970180 n/a (libglib-2.0.so.0)
#2 0x00007fb3d8971123 g_main_loop_run (libglib-2.0.so.0)
#3 0x00007fb37d330197 n/a (libebook-1.2.so.20)
#4 0x00007fb3d894cc11 n/a (libglib-2.0.so.0)
#5 0x00007fb3d2cb64cf start_thread (libpthread.so.0)
#6 0x00007fb3d2be32d3 __clone (libc.so.6)
Stack trace of thread 4104:
#0 0x00007fb3d2bd89ef __poll (libc.so.6)
#1 0x00007fb3d8970180 n/a (libglib-2.0.so.0)
#2 0x00007fb3d8971123 g_main_loop_run (libglib-2.0.so.0)
#3 0x00007fb3d8298b48 n/a (libgio-2.0.so.0)
#4 0x00007fb3d894cc11 n/a (libglib-2.0.so.0)
#5 0x00007fb3d2cb64cf start_thread (libpthread.so.0)
#6 0x00007fb3d2be32d3 __clone (libc.so.6)
GNU gdb (GDB) 8.3.1
Copyright (C) 2019 Free Software Foundation, Inc.
....
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/bin/geary...
[New LWP 4102]
[New LWP 4109]
[New LWP 4114]
[New LWP 4103]
[New LWP 4105]
[New LWP 4106]
[New LWP 4107]
[New LWP 4108]
[New LWP 4112]
[New LWP 4115]
[New LWP 4116]
[New LWP 4104]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `geary'.
Program terminated with signal SIGTRAP, Trace/breakpoint trap.
#0 0x00007fb3d89681c6 in ?? () from /usr/lib/libglib-2.0.so.0
[Current thread is 1 (Thread 0x7fb3cddfebc0 (LWP 4102))]
(gdb) bt
#0 0x00007fb3d89681c6 in () at /usr/lib/libglib-2.0.so.0
#1 0x00007fb3d896511b in g_log_structured_standard () at /usr/lib/libglib-2.0.so.0
#2 0x00005586a76c7b1d in application_controller_construct_co (_data_=0x5586a9a11e00)
at src/client/f537023@@geary-client@sta/application/application-controller.c:4132
#3 0x00007fb3d82f8c24 in () at /usr/lib/libgio-2.0.so.0
#4 0x00007fb3d82fe447 in () at /usr/lib/libgio-2.0.so.0
#5 0x00005586a76d1c93 in secret_mediator_construct_co (_data_=0x5586a9e632c0)
at src/client/f537023@@geary-client@sta/application/secret-mediator.c:434
#6 0x00005586a76d1c93 in secret_mediator_construct_co (_data_=0x5586a9e632c0)
at src/client/f537023@@geary-client@sta/application/secret-mediator.c:416
#7 0x00007fb3d82f8c24 in () at /usr/lib/libgio-2.0.so.0
#8 0x00007fb3d82fe447 in () at /usr/lib/libgio-2.0.so.0
#9 0x00005586a76d15ed in secret_mediator_check_unlocked_co (_data_=0x5586a9e6a600)
at src/client/f537023@@geary-client@sta/application/secret-mediator.c:981
#10 0x00007fb3d82f8c24 in () at /usr/lib/libgio-2.0.so.0
#11 0x00007fb3d82fe447 in () at /usr/lib/libgio-2.0.so.0
#12 0x00007fb3d2fb74e5 in () at /usr/lib/libsecret-1.so.0
#13 0x00007fb3d82f8c24 in () at /usr/lib/libgio-2.0.so.0
#14 0x00007fb3d82fe447 in () at /usr/lib/libgio-2.0.so.0
#15 0x00007fb3d2fb0d85 in () at /usr/lib/libsecret-1.so.0
#16 0x00007fb3d82f8c24 in () at /usr/lib/libgio-2.0.so.0
#17 0x00007fb3d82fe447 in () at /usr/lib/libgio-2.0.so.0
#18 0x00007fb3d829f4bb in () at /usr/lib/libgio-2.0.so.0
#19 0x00007fb3d82f8c24 in () at /usr/lib/libgio-2.0.so.0
#20 0x00007fb3d82fe447 in () at /usr/lib/libgio-2.0.so.0
#21 0x00007fb3d82adc15 in () at /usr/lib/libgio-2.0.so.0
#22 0x00007fb3d82f8c24 in () at /usr/lib/libgio-2.0.so.0
#23 0x00007fb3d82f8c59 in () at /usr/lib/libgio-2.0.so.0
#24 0x00007fb3d896e2cf in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#25 0x00007fb3d8970211 in () at /usr/lib/libglib-2.0.so.0
#26 0x00007fb3d8970251 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#27 0x00007fb3d82db9de in g_application_run () at /usr/lib/libgio-2.0.so.0
#28 0x00005586a75fe364 in _vala_main (args=0x7ffcd62f3278, args_length1=1) at src/25a6634@@geary@exe/client/application/main.c:33
#29 0x00007fb3d2b0b153 in __libc_start_main () at /usr/lib/libc.so.6
#30 0x00005586a75fe21e in _start () at src/25a6634@@geary@exe/client/application/main.c:43
(gdb)