Sending emails: a087 NO cannot create messages outside the Drafts mailbox
I'm using Hydroxide as an IMAP/SMTP bridge for Protonmail with Geary, and I'm getting this when sending emails:
Account identifier: account_01
Account provider: GEARY_SERVICE_PROVIDER_OTHER
Service type: GEARY_PROTOCOL_SMTP
Service host: 127.0.0.1
Error type: GearyImapError 6
Message: Request a087 append Sent (\seen) {literal/578b} failed: a087 NO cannot create messages outside the Drafts mailbox
Back trace:
* geary_problem_report_construct
* geary_account_problem_report_construct
* geary_service_problem_report_construct
* application_main_window_update_account_status
* application_controller_expunge_accounts
* g_closure_invoke
* g_signal_handlers_destroy
* g_signal_emit_valist
* g_signal_emit
* g_flags_to_string
* g_object_notify_by_pspec
* g_closure_invoke
* g_signal_handlers_destroy
* g_signal_emit_valist
* g_signal_emit
* g_flags_to_string
* g_object_notify_by_pspec
* geary_client_service_notify_connection_failed
* geary_smtp_capabilities_add_ehlo_response
* g_task_get_type
* g_task_is_valid
* geary_smtp_capabilities_add_ehlo_response
* g_task_get_type
* g_task_is_valid
* geary_smtp_capabilities_add_ehlo_response
* g_task_get_type
* g_task_is_valid
* geary_smtp_capabilities_add_ehlo_response
* g_task_get_type
* g_task_is_valid
* geary_smtp_capabilities_add_ehlo_response
* g_task_get_type
* g_task_is_valid
* geary_nonblocking_lock_reset
* geary_scheduler_scheduled_instance_get_type
* g_main_context_dispatch
* g_io_channel_new_file
* g_main_context_iteration
* g_application_run
* _vala_main
* __libc_start_main
* _start
I'm not sure whether the problem lies in Hydroxide or Geary. git send-email works so I'm leaning more towards suspecting Geary.