Hi!
Check this link:
https://mod-wot.com/load/official_mods_for_world_of_tanks_wot/recruiter_automatic_sending_messages_in_battle_in_the_clan_mod_for_world_of_tanks/2-1-0-43
Can't you include something like this in your modpack?
Because I didn't find on the internet an updated version of this mod.
Cheers!