Migrating from SaaS tools like Apollo or Snov.io to an API
The point of a migration isn't a hard cutover. Run both in parallel first, compare hit rate and field quality on the same sample, and only shift traffic once you've confirmed there's no regression.
Step 1 — parallel run on a sample
Take 200–500 real records you know well and run both sides. Compare three metrics: hit rate, field completeness and obvious-error rate. The sample must mirror your real country and industry mix or the conclusion won't hold.
Step 2 — map the fields
Write a mapping table from old field names to new ones, paying attention to enum values and null semantics. Most migration bugs aren't bad data — they're nulls being read as zero.
Step 3 — reuse existing quota with BYOK
If the old tool still has quota, configure its key as one source in the waterfall. The quota keeps draining while orchestration is billed at half price, so you don't pay twice during the transition.
Step 4 — shift traffic gradually
Move in three steps — 10%, 50%, 100% — with a week of observation at each. Keep a rollback switch until the final step has been stable for at least two weeks.
Try it yourself
New accounts include free credits — enough to run this whole flow end to end.
Get a free API key