Reply email verification with BillionVerify
Reply is a sales engagement platform built for multichannel outreach — email sequences, LinkedIn steps, calls, and SMS — all managed from one place. Because email delivery is the backbone of Reply sequences, verifying prospect addresses with BillionVerify before launch is essential to protecting your sending domain and keeping campaigns out of spam folders.
Why verify before the send
Sales sequences sent to invalid or risky addresses generate hard bounces and spam complaints that throttle your deliverability. BillionVerify checks every prospect email for SMTP validity, disposable domains, role-based inboxes, and catch-all servers — giving your Reply sequences the cleanest possible starting list and protecting the reputation of every connected mailbox.
Ready-to-use n8n workflow
Import this workflow into n8n — it verifies every address with BillionVerify before Reply sends, so only deliverable contacts are emailed. Install the BillionVerify community node first, then add your API key. Adapted from this n8n template
Workflow templates with Reply
Ready-to-use workflows that verify emails before Reply sends.
How it works
- 1
A new prospect is identified — from a CRM import, web form, or enrichment tool — and their email is available.
- 2
An n8n workflow or Integrately automation passes the email address to BillionVerify.
- 3
BillionVerify performs SMTP-level verification, checks against disposable and role-based address patterns, and assesses catch-all risk.
- 4
Addresses marked valid are imported into the appropriate Reply campaign or contact list.
- 5
Risky or invalid addresses are excluded or placed in a review queue before any sequence touches them.
When to use this
Scrub prospect lists before importing to Reply
Run your enriched prospect CSV through BillionVerify before uploading to Reply. Filter out invalid and risky addresses so your sequence starts with a high-confidence list and your bounce rate stays under control.
Validate inbound leads before adding to sequences
When a new lead arrives from a web form or CRM sync, verify the email with BillionVerify via n8n before enrolling them in a Reply sequence. One bad address can hurt the entire sending domain.
FAQ
Can I verify emails in bulk before a Reply launch?
Yes. BillionVerify's bulk verification API handles large prospect lists efficiently. Upload your list, receive cleaned results, then import only the verified subset into Reply.
What is a catch-all email risk and why does it matter for Reply?
Catch-all servers accept every inbound message regardless of whether the mailbox exists, so standard SMTP checks appear to pass. Sending to many catch-all addresses can cause silent bounces. BillionVerify flags them so you can treat them with extra caution in your Reply sequences.
How does email verification protect my Reply sending reputation?
Each Reply campaign shares the reputation of its connected mailbox. Hard bounces from invalid addresses and complaints from role-based inboxes signal poor list hygiene to inbox providers, leading to throttling or spam filtering. BillionVerify minimizes both risks.
Is there a rate limit on the BillionVerify API?
BillionVerify is designed for high-volume use. API rate limits depend on your plan, and bulk endpoints are available for processing thousands of addresses before a campaign launch.
Verify emails in Reply
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