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BillionVerifyMailgun

Complete B2B sales pipeline: Apollo lead gen, Mailgun outreach & AI reply management

Pull contacts, verify each address with BillionVerify, and continue to Mailgun — only deliverable addresses get through.

Download n8n workflow (JSON)Install the n8n node

Why verify before the send

Sending to invalid, risky, catch-all, or disposable addresses spikes your bounce rate and erodes sender reputation. A verification gate before the Mailgun step removes that risk automatically — only deliverable addresses continue, the rest are flagged.

The workflow

BillionVerify — verification sits right before the send.

+53
n8n steps
billionverify
Verify Email (BillionVerify)
+43
n8n steps
billionverify
Verify Email (BillionVerify) 2
+2
n8n steps

Node by node

  1. 1
    Schedule Trigger1Trigger· n8n

    Starts the workflow — on a schedule, a webhook, or manually while you test.

  2. 2
    OpenAI Chat ModelSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  3. 3
    Structured Output ParserSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  4. 4
    Schedule Trigger3Trigger· n8n

    Starts the workflow — on a schedule, a webhook, or manually while you test.

  5. 5
    Schedule Trigger4Trigger· n8n

    Starts the workflow — on a schedule, a webhook, or manually while you test.

  6. 6
    Schedule Trigger6Trigger· n8n

    Starts the workflow — on a schedule, a webhook, or manually while you test.

  7. 7
    OpenAI Chat Model1Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  8. 8
    Simple MemorySource· n8n

    Provides or transforms the contact data flowing through the workflow.

  9. 9
    User messageTrigger· n8n

    Starts the workflow — on a schedule, a webhook, or manually while you test.

  10. 10
    Structured Output Parser1Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  11. 11
    Gmail TriggerTrigger· n8n

    Starts the workflow — on a schedule, a webhook, or manually while you test.

  12. 12
    Get Email HistorySource· n8n

    Provides or transforms the contact data flowing through the workflow.

  13. 13
    Check Sent HistorySource· n8n

    Provides or transforms the contact data flowing through the workflow.

  14. 14
    Email Response ParserSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  15. 15
    Anthropic Chat Model1Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  16. 16
    Supabase2Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  17. 17
    Get many rowsSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  18. 18
    Supabase11Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  19. 19
    Supabase13Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  20. 20
    Voice or Text1Logic· n8n

    Routes items based on the workflow logic.

  21. 21
    extract emailSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  22. 22
    Sort2Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  23. 23
    If3Logic· n8n

    Branches on the verification result: only deliverable addresses continue to the send; the rest are skipped and flagged.

  24. 24
    Evualute when the mail was sentSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  25. 25
    Evualute when the mail was sent1Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  26. 26
    Download File1Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  27. 27
    Text1Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  28. 28
    Execute a SQL querySource· n8n

    Provides or transforms the contact data flowing through the workflow.

  29. 29
    If2Logic· n8n

    Branches on the verification result: only deliverable addresses continue to the send; the rest are skipped and flagged.

  30. 30
    Sort1Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  31. 31
    No Operation, do nothingSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  32. 32
    If1Logic· n8n

    Branches on the verification result: only deliverable addresses continue to the send; the rest are skipped and flagged.

  33. 33
    IfLogic· n8n

    Branches on the verification result: only deliverable addresses continue to the send; the rest are skipped and flagged.

  34. 34
    Transcribe1Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  35. 35
    Scraper agentSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  36. 36
    Only from email campaignsLogic· n8n

    Routes items based on the workflow logic.

  37. 37
    Limit1Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  38. 38
    No Operation, do nothing2Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  39. 39
    LimitSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  40. 40
    SortSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  41. 41
    No Operation, do nothing1Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  42. 42
    Sort3Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  43. 43
    No Operation, do nothing4Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  44. 44
    Generate query payloadSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  45. 45
    Select already scraped mailsSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  46. 46
    Set replied = Yes Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  47. 47
    SwitchLogic· n8n

    Routes items based on the workflow logic.

  48. 48
    MergeSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  49. 49
    research about companySource· n8n

    Provides or transforms the contact data flowing through the workflow.

  50. 50
    Limit2Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  51. 51
    Limit4Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  52. 52
    Create URLSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  53. 53
    Keep only the new leadsSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  54. 54
    Verify Email (BillionVerify)Verify· billionverify

    The BillionVerify node verifies the address — status (valid / invalid / risky / catch-all / role / disposable), is_deliverable, and a confidence score — before anything is sent.

  55. 55
    Loop Over ItemsSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  56. 56
    Loop Over Items1Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  57. 57
    Time ZoneSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  58. 58
    General anlysisSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  59. 59
    Switch5Logic· n8n

    Routes items based on the workflow logic.

  60. 60
    Switch6Logic· n8n

    Routes items based on the workflow logic.

  61. 61
    Run an ActorSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  62. 62
    Already scrapedSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  63. 63
    Create rows with new leadsSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  64. 64
    IF deliverableLogic· n8n

    Branches on the verification result: only deliverable addresses continue to the send; the rest are skipped and flagged.

  65. 65
    Supabase3Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  66. 66
    Mailgun1Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  67. 67
    Supabase4Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  68. 68
    MailgunSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  69. 69
    Sender EmailSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  70. 70
    create email sequenceSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  71. 71
    Loop Over Items7Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  72. 72
    Loop Over Items10Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  73. 73
    Loop Over Items8Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  74. 74
    Loop Over Items11Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  75. 75
    Extract InfoSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  76. 76
    Set Telegram messageSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  77. 77
    Get a messageSend· n8n

    Sends only to verified, deliverable addresses. Swap in your own provider node if you send elsewhere.

  78. 78
    WaitSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  79. 79
    Wait1Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  80. 80
    Your leads tableSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  81. 81
    CodeSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  82. 82
    Supabase12Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  83. 83
    Mailgun7Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  84. 84
    Supabase14Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  85. 85
    Mailgun6Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  86. 86
    Supabase15Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  87. 87
    Mailgun9Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  88. 88
    Supabase16Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  89. 89
    Mailgun8Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  90. 90
    Only Keep Verified Emails Logic· n8n

    Routes items based on the workflow logic.

  91. 91
    Limit3Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  92. 92
    Professional Email Response AgentSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  93. 93
    Wait7Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  94. 94
    Wait10Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  95. 95
    Wait8Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  96. 96
    Wait11Source· n8n

    Provides or transforms the contact data flowing through the workflow.

  97. 97
    Confirmation messageSource· n8n

    Provides or transforms the contact data flowing through the workflow.

  98. 98
    Verify Email (BillionVerify) 2Verify· billionverify

    The BillionVerify node verifies the address — status (valid / invalid / risky / catch-all / role / disposable), is_deliverable, and a confidence score — before anything is sent.

  99. 99
    IF deliverable 2Logic· n8n

    Branches on the verification result: only deliverable addresses continue to the send; the rest are skipped and flagged.

  100. 100
    Create Draft ResponseSend· n8n

    Sends only to verified, deliverable addresses. Swap in your own provider node if you send elsewhere.

Workflow JSON

Copy or download this workflow, then import it in n8n (Workflows → Import from File / Paste). Install the BillionVerify community node first, then add your API key credential.

verify-emails-in-mailgun.json50 KB · n8n workflow
Download

When to use this

  • Cleaning a list before a Mailgun send or sync.
  • Protecting Mailgun deliverability and sender reputation.
  • Keeping bounce rates low so your sending is never throttled.

Three ways to connect

n8n node

Install the BillionVerify community node and drop it into this workflow.

Integrately

1-Click connect BillionVerify with 1500+ apps, no code.

REST API

Call the verification API directly from any stack.

FAQ

Why verify before sending in Mailgun?

Verifying first keeps your bounce rate low, which protects your sender reputation and your results.

How do I import this workflow?

Download the JSON, then in n8n go to Workflows → Import from File (or paste it). Install the BillionVerify community node and add your API key credential.

What happens to risky or catch-all addresses?

They are routed to the false branch and excluded from the send. You decide whether to retry, review, or drop them.

Add verification to your workflow

Create a free account, grab your API key, and stop bounces before they happen.

Get started free