Datacircle

Best cached reverse email lookup API in 2026

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We benchmarked 4 cached reverse email lookup API providers. We list the three we score highest. For each one, we show its top scoring plan, each part of the plan's score and what 1,000 people cost.

The Data score on Cached reverse email lookup

How often the call names the person behind a work email, out of 100: the share of the addresses we called for which it gave that person's own LinkedIn profile. We called only addresses whose owners wrote to us from them, and found each owner's LinkedIn page ourselves, so no provider's answer is taken as the truth. A provider called on fewer addresses is set against how the others did on those same addresses, so an easier few don't lift it. A provider we called more than once on the same address is scored on all those calls, so no one run decides it. Each provider here answers from a copy it keeps.

  1. #1

    QuickEnrich, $399 monthly: Cached reverse email lookup API

    Overall score
    70.9Overall score: 70.9 What goes in • Price score: 100, its weight 40 • Data score: 33, its weight 40 • Cost to get started score: 63, its weight 10 • Bundle score: 83, its weight 10 • Performance score: 100, its weight 10 Formula Overall score = (40 × price score + 40 × data score + 10 × cost to get started score + 10 × bundle score + 10 × performance score) / 110 This plan Overall score = (40 × 100.00 + 40 × 33.33 + 10 × 63.32 + 10 × 83.33 + 10 × 100.00) / 110 = 70.9064, shown as 70.9
    Price score
    100Price score: 100 What goes in • $ per 1,000 people: $0 extra, a flat fee with no cap • $ per 1,000 emails the provider finds no one for: $0 extra, a flat fee with no cap Formula Price score = 100 × (35 × rank + 5 × not found) / 40 rank = 1 − plans cheaper / plans we rank by price (a flat fee with no cap scores 1, a plan with no $ per 1,000 scores 0) not found = 1 − not found $ per 1,000 / $ per 1,000, never under 0 Not found is 1 when the provider charges nothing for emails it finds no one for. A flat fee with no cap counts as charging nothing. Not found is 0 when we don't know what the provider charges for emails it finds no one for. Not found is 0 when the provider charges for emails it finds no one for and the plan has no $ per 1,000. This plan rank = 1 (a flat fee with no cap) not found = 1 (a flat fee with no cap) Price score = 100 × (35 × 1 + 5 × 1) / 40 = 100.00, shown as 100
    • $ per 1,000 emails the provider finds no one for: $0 extra, a flat fee with no cap
    Data score
    33Data score: 33 What goes in • In our benchmark of 22 and 23 October 2026, we called every provider on the same 12 addresses. • We scored this plan 0.3333 out of 1 in our benchmark, so its Data score is 33. Formula Data score = 100 × this plan's benchmark score, out of 1 The Data score on Cached reverse email lookup How often the call names the person behind a work email, out of 100: the share of the addresses we called for which it gave that person's own LinkedIn profile. We called only addresses whose owners wrote to us from them, and found each owner's LinkedIn page ourselves, so no provider's answer is taken as the truth. A provider called on fewer addresses is set against how the others did on those same addresses, so an easier few don't lift it. A provider we called more than once on the same address is scored on all those calls, so no one run decides it. Each provider here answers from a copy it keeps. This plan Data score = 100 × 0.3333 = 33.33, shown as 33
    Cost to get started score
    63Cost to get started score: 63 What goes in • Who can get it: anyone • How you pay: monthly • Least to pay before your first result: $399 Formula Cost to get started score = 100 × (who + billing + least) / 3 who = closed to new users 0, on approval or after a call 0.3, only if you already pay for a plan 0.3, a crypto wallet 0.5, a business email 0.7, none of these 1 billing = pay as you go or free 1, a pack or a top-up 0.8, monthly 0.7, quarterly 0.5, half-yearly 0.4, yearly 0.3, contact us 0 least = $10 or less 1, else 1 − log10(least / $10) / 2, never under 0 This plan who = 1 billing = 0.7 least = 1 − log10($399 / $10) / 2 = 0.1995 Cost to get started score = 100 × (1 + 0.7 + 0.1995) / 3 = 63.32, shown as 63
    • How you pay: monthly
    • Least to pay before your first result: $399
    Bundle score
    83Bundle score: 83 What goes in • Also pays for: Contact Finder · Email Search · Phone Search · Domain Search by URL & Title · Company Finder Formula Bundle score = 100 × other calls / (other calls + 1) other calls = the number of items in Also pays for. Each item counts once, even one that names several calls or every endpoint. A plan whose pages we haven't read yet counts 0. This plan Bundle score = 100 × 5 / (5 + 1) = 83.33, shown as 83
    • Also pays for: Contact Finder · Email Search · Phone Search · Domain Search by URL & Title · Company Finder
    Performance score
    100Performance score: 100 What goes in • Its median time per call in our benchmark of 22 and 23 October 2026, minus the baseline: 0.147 s • QuickEnrich, the fastest benchmarked provider: 0.147 s Formula Performance score = 100 × the fastest median / this median time = the call's time minus the mean of three free calls to the same provider just before it, on the same connection where that mean is longer than the call: minus the provider's median baseline, capped at the call's time This plan Performance score = 100 × 0.147 / 0.147 = 100.00, shown as 100
    • Its median time per call in our benchmark of 22 and 23 October 2026, minus the baseline: 0.147 s
    • QuickEnrich, the fastest benchmarked provider: 0.147 s
    $ per 1,000
    $0 extra. The $399 monthly price covers any number of people.
    • In our benchmark of 22 and 23 October 2026, we called every provider on the same 12 addresses.
    • We scored this plan 0.3333 out of 1 in our benchmark, so its Data score is 33.
  2. #2

    AI Ark, $119 monthly: Cached reverse email lookup API

    Overall score
    58.6Overall score: 58.6 What goes in • Price score: 73, its weight 40 • Data score: 42, its weight 40 • Cost to get started score: 72, its weight 10 • Bundle score: 89, its weight 10 • Performance score: 25, its weight 10 This plan Overall score = (40 × 73.10 + 40 × 41.67 + 10 × 72.07 + 10 × 88.89 + 10 × 24.66) / 110 = 58.6091, shown as 58.6
    Price score
    73Price score: 73 What goes in • $ per 1,000 people: $1.983 • $ per 1,000 emails the provider finds no one for: the provider's pages don't say • Plans of this API we rank by price: 79 • Plans cheaper per 1,000 people than this plan: 13 This plan rank = 1 − 13 / 79 = 0.8354 not found = 0 (we don't know what the provider charges) Price score = 100 × (35 × 0.8354 + 5 × 0) / 40 = 73.10, shown as 73
    • $ per 1,000 emails the provider finds no one for: the provider's pages don't say
    • Plans of this API we rank by price: 79
    • Plans cheaper per 1,000 people than this plan: 13
    Data score
    42Data score: 42 What goes in • In our benchmark of 22 and 23 October 2026, we called every provider on the same 12 addresses. • We scored this plan 0.4167 out of 1 in our benchmark, so its Data score is 42. This plan Data score = 100 × 0.4167 = 41.67, shown as 42
    Cost to get started score
    72Cost to get started score: 72 What goes in • Who can get it: anyone 18 or over with authority to bind the company or organization the account is for, not in a US-embargoed country or on a US restricted-party list • How you pay: monthly • Least to pay before your first result: $119 This plan who = 1 billing = 0.7 least = 1 − log10($119 / $10) / 2 = 0.462 Cost to get started score = 100 × (1 + 0.7 + 0.462) / 3 = 72.07, shown as 72
    • How you pay: monthly
    • Least to pay before your first result: $119
    Bundle score
    89Bundle score: 89 What goes in • Also pays for, from the same budget: People Preview · People Search · Company Search · Find Emails by Track ID · Export People with Email · Export Single Person with Email · Mobile Phone Finder · Personality Analysis This plan Bundle score = 100 × 8 / (8 + 1) = 88.89, shown as 89
    • Also pays for, from the same budget: People Preview · People Search · Company Search · Find Emails by Track ID · Export People with Email · Export Single Person with Email · Mobile Phone Finder · Personality Analysis
    Performance score
    25Performance score: 25 What goes in • Its median time per call in our benchmark of 22 and 23 October 2026, minus the baseline: 0.596 s • QuickEnrich, the fastest benchmarked provider: 0.147 s This plan Performance score = 100 × 0.147 / 0.596 = 24.66, shown as 25
    • Its median time per call in our benchmark of 22 and 23 October 2026, minus the baseline: 0.596 s
    • QuickEnrich, the fastest benchmarked provider: 0.147 s
    $ per 1,000
    $1.983
    • In our benchmark of 22 and 23 October 2026, we called every provider on the same 12 addresses.
    • We scored this plan 0.4167 out of 1 in our benchmark, so its Data score is 42.
  3. #3

    Context.dev, $500 monthly: Cached reverse email lookup API

    Overall score
    52.2Overall score: 52.2 What goes in • Price score: 61, its weight 40 • Data score: 42, its weight 40 • Cost to get started score: 62, its weight 10 • Bundle score: 93, its weight 10 • Performance score: 7, its weight 10 This plan Overall score = (40 × 61.23 + 40 × 41.67 + 10 × 61.68 + 10 × 93.33 + 10 × 7.05) / 110 = 52.1509, shown as 52.2
    Price score
    61Price score: 61 What goes in • $ per 1,000 people: $10.00 • $ per 1,000 emails the provider finds no one for: $0 • Plans of this API we rank by price: 79 • Plans cheaper per 1,000 people than this plan: 35 This plan rank = 1 − 35 / 79 = 0.55696 not found = 1 (the provider charges nothing) Price score = 100 × (35 × 0.55696 + 5 × 1) / 40 = 61.23, shown as 61
    • $ per 1,000 emails the provider finds no one for: $0
    • Plans of this API we rank by price: 79
    • Plans cheaper per 1,000 people than this plan: 35
    Data score
    42Data score: 42 What goes in • In our benchmark of 22 and 23 October 2026, we called every provider on the same 12 addresses. • We scored this plan 0.4167 out of 1 in our benchmark, so its Data score is 42. This plan Data score = 100 × 0.4167 = 41.67, shown as 42
    Cost to get started score
    62Cost to get started score: 62 What goes in • Who can get it: anyone aged 18 or over • How you pay: monthly • Least to pay before your first result: $500 This plan who = 1 billing = 0.7 least = 1 − log10($500 / $10) / 2 = 0.1505 Cost to get started score = 100 × (1 + 0.7 + 0.1505) / 3 = 61.68, shown as 62
    • How you pay: monthly
    • Least to pay before your first result: $500
    Bundle score
    93Bundle score: 93 What goes in • Also pays for: Logo Link · Search Brands • Also pays for, from the same budget: Scrape · Map URLs · Crawl Website · Search Web · Answers · Search Companies · Retrieve Brand · Extract Styleguide · Search News · Parse File · Batches · Monitor runs This plan Bundle score = 100 × 14 / (14 + 1) = 93.33, shown as 93
    • Also pays for: Logo Link · Search Brands
    • Also pays for, from the same budget: Scrape · Map URLs · Crawl Website · Search Web · Answers · Search Companies · Retrieve Brand · Extract Styleguide · Search News · Parse File · Batches · Monitor runs
    Performance score
    7Performance score: 7 What goes in • Its median time per call in our benchmark of 22 and 23 October 2026, minus the baseline: 2.085 s • QuickEnrich, the fastest benchmarked provider: 0.147 s This plan Performance score = 100 × 0.147 / 2.085 = 7.05, shown as 7
    • Its median time per call in our benchmark of 22 and 23 October 2026, minus the baseline: 2.085 s
    • QuickEnrich, the fastest benchmarked provider: 0.147 s
    $ per 1,000
    $10.00
    • In our benchmark of 22 and 23 October 2026, we called every provider on the same 12 addresses.
    • We scored this plan 0.4167 out of 1 in our benchmark, so its Data score is 42.

Every cached reverse email lookup API provider we score, ranked

  1. QuickEnrich, $399 monthly: Overall score 70.9, $0 extra per 1,000. The $399 monthly price covers any number of people.
  2. AI Ark, $119 monthly: Overall score 58.6, $1.983 per 1,000
  3. Context.dev, $500 monthly: Overall score 52.2, $10.00 per 1,000
  4. AnyAPI, top-up from $10: Overall score 52.0, $7.20 per 1,000

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