Reputational Damage: Being flagged as spam hurts your brand's reputation.
Lack of Advanced Features: They lack the sophisticated automation, CRM integration, analytics, and dedicated support of official API solutions.
No Opt-in Management: They bypass consent requirements, which is unethical and illegal under many data protection laws.
Pros of Unauthorized Solutions (Perceived, but dangerous):
Lower perceived upfront cost (often a one-time purchase).
Ability to message anyone (without explicit opt-in, but this is the core risk).
Cons of Unauthorized Solutions:
Extremely High Risk of Ban/Legal Action.
Unreliable message delivery.
No customer support.
No real scalability or whatsapp number list long-term viability.
Review Summary & Recommendation for Bangladesh:
For businesses in Bangladesh looking to leverage WhatsApp effectively and sustainably, the WhatsApp Business API, facilitated by a reputable Business Solution Provider (BSP), is the only viable and safe option.
When choosing a WhatsApp number list software (i.e., a WhatsApp Business API platform), consider: