My verdict: the essential enrichment tool if you're prospecting in France.
I've been using Dropcontact for 3 years in all my outbound stacks. Why? Because it's the only tool that's truly GDPR-compliant - and that, when you work with large accounts or go through an audit, changes everything. Zero stored database, everything is calculated on the fly.
On the French market, data quality is 15-20% better than Apollo or Hunter. I tested on lists of SMBs/mid-sized companies: Dropcontact matches where others fail. The combo of enrichment + deduplication + native CRM integration saves time every week.
What I like less: the UX feels a bit dated (far from Clay), and the asynchronous API complicates real-time workflows. For mobile numbers, you'll need to complement with Kaspr or Lusha.
My advice: if you're mainly targeting France, go for it. If your market is US or Asia, look at Apollo or Clearbit instead.