I came across a newsletter in which they have a WhatsApp link and when i click on it i am able send predefined message to predefined number.
SEND INQUIRY VIA WHATSAPP button is linked to below for example
Can i use this link in my newsletter without any restriction as i have a database of 2000 subscribers...
or i have to use some sort of verified mechanism using API so that whatsapp is not abused.
This link seems to be vulnerable and can be used for spam or its fine to use it