Events custom post type does not register with MailPoet

Hello,
I’m trying to get MailPoet3 to automatically send an email to subscribers when a new Event is created.
However, in MailPoet the Events do not appear, hence no email sent.
Browsing the support for MailPoet, I found out that if the Custom Post Type sets exclude_from_search to true , then MailPoet won’t register the CPT.

A cursory search in the Events Manager plugin source shows that, indeed :
in file em-posts.php :
line 126 'exclude_from_search' => !get_option('dbem_cp_events_search_results'),
line 172 'exclude_from_search' => true
line 220 'exclude_from_search' => !get_option('dbem_cp_locations_search_results'),

Is it possible to override this and set exclude_from_search to false somewhere ? What side-effects would such a change have ?

Thanks a lot for your support,
Regards
Thierry