Conversations Inbox | Security & Privacy | Opt-in Management
Businesses are generally required in most countries to collect opt-ins from their users before contacting them. Europe’s General Data Protection Regulation (GDPR) and the US CAN-SPAM act require an active opt-in by the end-user.
Note: please be aware that opt-ins are NOT required to answer user-initiated conversations. However, the conversation is restricted to the particular inquiry the user sent – and not extended as a ‘marketing’ opt-in. In case you wish to message the user after the inquiry has been closed, the opt-in is required. Companies can invite the user during the conversation for an opt-in, during the 24 hour support window.
This means that your business needs to collect the opt-in before you can initiate a conversation with a user. Check the table below for more information about opt-in management.
Criteria  | Viber  | |
|---|---|---|
Opt-ins must be collected before you initiate a conversation with a customer  | Yes – required  | Yes – required  | 
Consent must be collected via a 3rd party channel (e.g. email, website, customer service call, SMS, IVR, in-app, etc.)  | Yes – required  | Yes – desired  | 
Active opt-in: customer must actively consent by entering their phone number / ticking a checkbox  | Yes – required  | Not required  | 
Businesses must clearly state that a person is opting in to receive messages from the business over the chat app  | Yes – required  | Not required  | 
The business name that a user is opting in for, must be clearly stated  | Yes – required  | Not required  | 
A visual opt-in element is required (e.g. checkbox)  | Yes – required  | Not required  | 
A customer initiating a conversation counts as opt-in  | No  | Yes  | 
Businesses must retain proof of the customer opt-in consent  | Yes – required  | Yes – required  | 
Customers need to be able to block the service from sending messages at any given time  | Yes  | Yes  |