What are some alternatives?
When comparing Wrinkl and Stealthy, you can also consider the following products
Business on Messenger - Have personal, real-time conversations with your customers.
Privnote - Send notes that will self-destruct after being read
Path Talk - Smart, Private Messaging
Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.
Fleep for Business - Simple, open collaboration and chat with admin capabilities
Sicher - Super-safe messenger made by IM+ team in Germany