Hi, have used it in the past and switched over. Here’s why:
It wasn’t straightforward, took a lot of steps to get a sequence started, for some reason
Didn’t integrate with other tools, so you had to download a csv of contacts and import it (looks like they offer prospecting now, but not sure about data quality)
If you target 2+ leads from a company and 1 replies, AM still sends emails to the others - this backfired a couple times
Didn’t include phone calls in the steps
This was about 1y ago. Looks like they rebranded so product may have changed now. I simply think better tools have come out since its inception. I switched over to Crono and am very happy both for emails and phone numbers. It’s a very complete tool, from the extension to scrape individual contacts to the dashboard, making our lives much easier as a team. Has everything you can think of, when it comes to outbound. Works even better with Sales Nav. Disclaimer: I’m a Crono partner and get a referral fee for customers I bring on.