Best Clay waterfall providers for BYOK hops (2026)

Clay is the table and the workflow, not the data. Marketplace credits feel fine until volume hits. The volume move is to bring your own keys, filter the list first, and only fire later hops when the earlier one came back empty or invalid.

How that looks in a live table:

• Bring your own API keys into only-if-empty columns so you skip Clay Data Credits on the find itself.
• Filter ICP before you enrich. Never buy Actions on junk rows.
• Condition later hops on empty or invalid only, so you stop paying once a row already has a verified email.
• Gate mobile. It burns five to ten times the email budget.
• Stop on the first verified email. Do not stack every hop with no owner.

If you refuse to design columns, buy a managed wallet instead of pretending you need bring-your-own-key control.

Operators do not run one universal Clay chain. They pick a cheap first hop, a mid-chain workhorse, and a managed last resort, then stop when a row is already valid.

Pick the order from the job, then A/B 200 of your own rows:

• When agency production already sources in AI Ark plus Sales Nav, run Icypeas, then Prospeo, then LeadMagic, then BetterContact on the empties.
• When the Clay client waterfall has fewer cheap finders in the stack, run Prospeo, then LeadMagic, then FullEnrich.
• When you already have cheap-first APIs, run Icypeas, then Findymail, then enrow, then Prospeo.
• When cheap finders already cover about 80 percent, keep BetterContact plus FullEnrich for the misses only.
• When Apollo is the cheap net, take the easy share there, then spend hard credits on the remainder.

Icypeas and Findymail show up in cascades even when they are not ranked catalog picks. Mention them in your A/B if they already sit in your stack. Apollo is source first, not a Clay bring-your-own-key hop. Sequencers are the send layer.

Email and mobile are not the same spend. Email is usually one credit. Mobile is five to ten times that, so you gate phones instead of toggling them on by default.

Published weights on this shortlist:

• LeadMagic charges 1 for email, 5 for mobile, and 0 on a miss.
• Prospeo charges 1 for email, 10 for mobile, or 9 if the email is already known, and 0 on a miss enrich.
• BetterContact charges 1 for email and 10 for mobile.
• Cleanlist charges 1 for email, 10 for a dial, and 0 on a miss.
• FullEnrich charges 1 for work email, 3 for personal, 10 for mobile, and 0 on a miss.

At LeadMagic Basic, rough sticker email is about $0.025 and mobile is about $0.125 if every credit finds. At FullEnrich $55 per 1,000, email is about $0.055 and mobile is about $0.55. Clay bring-your-own-key skips Data Credits. Actions still charge 1 per enrich, and a failed enrich is 0. Filter first.

Stop as soon as the row is good enough. The waterfall is there to fill empties, not to run every provider for sport.

• Stop when the first provider returns a verified email.
• Stop when cumulative fill already hits your bar.
• Stop when the row failed ICP. Never enrich junk.

Phone match is where this bites. The same waterfall can look strong on VP lists at big companies and weak on SMB founders. ICP changes everything. A/B 200 of your own rows before you scale spend.

Not every hop belongs on every table. Skip the ones that do not match the job.

Pick Prospeo as a one-by-one or late sniper when bulk Sales Nav match cratered for you. Pick BetterContact or FullEnrich only on high-ROI empties, not on commodity spray. Pick Cleanlist when you refuse to design columns, and skip it if you already own Clay plus bring-your-own-key order control. Pick LeadMagic mobiles at 5 when you just need to experiment on email-only US SMB. Skip FullEnrich mobiles there.

Skip Clay marketplace credits at volume. Bring your own keys, or resolve outside, then use Clay for logic only. Filter before you enrich, keep an owner on stop-on-valid, and leave mobile off until the dial motion pays for five to ten times the email burn.