I've been using Wahelp for about a year now, and to be honest, at first, the service promised a lot — a unified interface for messengers and integration with CRM. But the reality turned out to be less rosy. The integrations with amoCRM have errors. There are often duplicate contacts, and messages get lost — either they don't arrive at all or they come twice. If you're planning to sign up, don't rush. First, test it for a short period, keep an eye on the integrations and mailings, and have a backup plan in case of issues. In my opinion, this service is more of a compromise than a reliable solution; there are competitors with fewer problems.