it is very rare to have this type of tool polished in a lifetime affair. The fact that Upscale is a twilio reseller ensures sustainability thanks to the additional revenues from MMR communications (sms and calls) on appsumo customers. The tool is worth its weight in gold because the data enriched for each prospect will allow you to better retarget your approaches. I like the technical flexibility of their tool because there is the possibility of creating fields on leads/accounts, the fact of creating multi-channels (call, email, whatsapp and sms in the Sequences) this tool can adapt to other core businesses than sales data can be exported to other CRMs such as zoro, salesforce, hubspot, pipedrive or google sheet. for APIs there is pabbly connect, zapier. I saw who is possible to do some linkedin automation. very happy to have more many Upscale account. I have a lot of G2 reviews which allowed me to see their potential.