← All finished work
Platform · 6–12 weeks
ExactMails
Email enrichment and verification built for cold-outreach list hygiene at production scale.
The brief
Cold outreach dies on bad data — bounced sends, spam traps, wasted sequences. The product needed to take a messy list and return verified, deliverable contacts at scale.
What was built
- An enrichment and verification pipeline for bulk lists.
- A worker/queue architecture that processes volume without choking.
- Output tuned for deliverability — verified, send-ready addresses.
What it demonstrates
Throughput-oriented backend work: processing large lists reliably with a queue-and-worker design that holds up under production load.