# Enrich data

> “Enrich my lead data”. Ranked by expert consensus and what people use now; affiliate links never change the order.

Enrichment tools differ in where the data comes from. Apollo and Hunter look up contacts and check that emails deliver, both with free plans. Clay pulls from many providers at once and lets AI research fill custom fields, well suited to outbound agencies but hard to learn. Dropcontact, from France, finds and verifies emails by algorithm instead of a stored database, a common GDPR-friendly choice for European teams, from €79 a month.

Last checked: 2026-10-06

## Ranking

1. **[Apollo](https://suiteintent.com/t/apollo?m=GB)**: B2B contact database with email outreach. · Best for: Founders building their first outbound pipeline · Free plan · 50% ([Deals](https://suiteintent.com/deals/apollo))
2. **[Clay](https://suiteintent.com/t/clay?m=GB)**: Lead enrichment and research in a spreadsheet. · Best for: Agencies running outbound at volume · Free plan
3. **[Hunter](https://suiteintent.com/t/hunter?m=GB)**: Finds and verifies work email addresses. · Best for: Founders doing their own outreach · Free plan
4. **[Dropcontact](https://suiteintent.com/t/dropcontact?m=GB)**: GDPR-compliant B2B email enrichment from France. · Best for: Cleaning a CRM without buying contact lists · From €79/mo

## Side by side

| Tool | Price | Ease of use (1-5) | Team size |
| --- | --- | --- | --- |
| Apollo | Free plan, 50% off for a year for startups | 4 | solo, small team, growing team |
| Clay | Pricing on request | 2 | small team, growing team |
| Hunter | Pricing on request | 5 | solo, small team, growing team |
| Dropcontact | From €79/mo | 4 | solo, small team, growing team |

## Why these picks

- Independent reviews: [Zapier](https://zapier.com/blog/data-enrichment-tools/) (Last checked: 2026-10-02)
- Prices last checked: 2026-10-06
- Ranked by expert consensus and what people use now; affiliate links never change the order.

## Head to head

- [Apollo vs Clay: which fills your sales pipeline](https://suiteintent.com/compare/apollo-vs-clay)
- [Apollo vs Hunter: tools to find new customers](https://suiteintent.com/compare/apollo-vs-hunter)
- [Clay vs Dropcontact: enrich your lead lists](https://suiteintent.com/compare/clay-vs-dropcontact)
- [Hunter vs Dropcontact: find and verify work emails](https://suiteintent.com/compare/hunter-vs-dropcontact)

## Questions

### Apollo, Hunter or Clay for a founder doing their own outreach?

Hunter is the simplest: give it a company domain or a name and it finds and verifies the work email. Apollo adds a large B2B database, email sequences and a dialer, so you can find and contact prospects in one place. Clay suits growth teams and agencies building tightly targeted lists at scale, and expect a learning curve. Most founders start with Apollo or Hunter on the free plan.

### How far do free enrichment credits go?

Apollo, Hunter and Clay all have free plans, and Hunter's comes with monthly credits. That covers a small weekly list of prospects. Once you enrich hundreds of contacts a month, you will need a paid plan. Dropcontact has no free plan: 50 free credits let you test it, and paying starts at €79 a month.

### Is enriching B2B leads legal under GDPR?

GDPR applies to work emails because they identify a person. Many B2B teams rely on legitimate interest, which requires a clear purpose, a balancing test and an easy way to opt out. Dropcontact works by algorithm rather than a stored contact database, which is why European teams pick it. Rules on cold email also differ by country, so check them before you send.

### My CRM is full of half-empty records. Can these tools clean it up?

Dropcontact finds and verifies professional emails and cleans up existing CRM records, which is its main job. Apollo enriches contacts with roles and company details. Clay lets you define your own columns and fill them from several providers. Run a test on a few hundred records first to check the hit rate before you process the whole CRM.

### Why do enriched emails still bounce?

People change jobs and companies change domains, so any database goes stale. Hunter verifies that an address delivers before you send. A high bounce rate harms your sending domain, so verify every list right before a campaign. Remove addresses that fail verification rather than guessing.