Whatsapp broadcast channels support up to 256 contacts.. I know of businesses who have multiple broadcast channels and send out messages to multiple thousand users everyday through these channels. However, I tried doing something similar.. but after 11 broadcast channels, whatsapp became too slow and started crashing randomly. Even after using the latest phones with the best configurations, similar problems persist.
Anyone here knows how to handle this given the lack of public APIs from Whatsapp?
I have explored several "vendors" claiming to offer help on this crashing issue, but most use questionable means such as multiple SIM cards from different countries, numbers getting blocked, etc.
Until Whatsapp opens up its platform to businesses, does anyone else have any solution or guidance regarding this issue?