ZeroBounce connector
Automate Email Validation and Keep Your Lists Clean with ZeroBounce Integrations
Connect ZeroBounce to your CRM, marketing platform, and data pipelines to validate emails in real time and protect your sender reputation.
What can you do with the ZeroBounce connector?
Email deliverability starts with a clean list, but manually validating addresses across your CRM, marketing automation, and lead capture tools is slow, error-prone, and never truly current. ZeroBounce's email validation API handles bounce detection, spam trap identification, abuse email flagging, and email scoring — making it a quality gate that revenue teams actually rely on. Integrating ZeroBounce with tray.ai lets you automate validation at every point in the customer journey, from the moment a new lead enters your funnel to scheduled list hygiene jobs against your entire database.
Automate & integrate ZeroBounce
Automating ZeroBounce business process or integrating ZeroBounce data is made easy with tray.ai
Use case
Real-Time Lead Validation at Form Submission
When a prospect submits a form on your website or landing page, tray.ai can instantly pass the email address to ZeroBounce for validation before it ever reaches your CRM or marketing platform. Invalid, disposable, or catch-all addresses get flagged or blocked, so only quality contacts enter your funnel. This cuts wasted outreach and keeps your bounce rates low from day one.
Use case
Automated CRM List Hygiene
Over time, CRM databases accumulate stale, invalid, and risky email addresses that inflate your lists and hurt deliverability. With tray.ai, you can schedule recurring ZeroBounce validation jobs that pull contacts from Salesforce, HubSpot, or any CRM, validate them in bulk, and automatically update contact status or suppression flags. Teams can set hygiene cadences — weekly, monthly, or triggered by inactivity — without any manual exports.
Use case
Pre-Campaign Email List Validation
Before launching a major email campaign, marketing teams can trigger a ZeroBounce validation pass against the full recipient segment. tray.ai handles pulling the segment from your ESP or CRM, submitting it to ZeroBounce, waiting for batch results, and filtering the send list to remove risky addresses. Bounce rates on high-stakes sends like product launches and nurture sequences drop significantly as a result.
Use case
Lead Enrichment and Email Scoring Pipeline
ZeroBounce returns more than a valid/invalid signal — it provides email quality scores, free email provider detection, SMTP server information, and MX record data. tray.ai can write these enrichment attributes back into your CRM or data warehouse alongside the validation result, giving sales and marketing teams richer data for segmentation, lead scoring, and routing decisions.
Use case
Event-Triggered Re-Validation After Bounces
When an email hard bounces in your ESP or marketing automation platform, tray.ai can trigger a ZeroBounce re-validation check to confirm whether the address is permanently invalid or was a transient issue. If ZeroBounce confirms the address is bad, the contact gets automatically suppressed or updated across your CRM and ESP. No manual intervention needed.
Use case
New User Registration Email Verification
For SaaS products and e-commerce platforms, verifying a user's email at sign-up protects against fake account creation and ensures transactional emails reach real users. tray.ai can intercept registration events, validate the provided email via ZeroBounce, and either allow the registration, prompt the user to correct their address, or flag the account for review — without building a custom validation service.
Use case
Data Warehouse Email Quality Monitoring
Data engineering teams can use tray.ai to run periodic ZeroBounce validation passes against email fields in Snowflake, BigQuery, or Redshift, writing results back as quality metadata. This creates an audit trail of email validity across the business, powers data quality dashboards, and ensures downstream analytics and AI models are trained on reliable contact data.
Build ZeroBounce Agents
Give agents secure and governed access to ZeroBounce through Agent Builder and Agent Gateway for MCP.
Agent Tool
Validate Email Address
Check whether a single email address is valid, invalid, or risky before using it in campaigns or CRM records. This catches bounces before they happen and protects your sender reputation.
Agent Tool
Bulk Validate Email List
Submit a large list of email addresses for batch validation and get detailed deliverability results for each one. Good for cleaning entire contact databases or import files before you launch a campaign.
Data Source
Check Email Activity Score
Retrieve the activity score for an email address to see how engaged that contact is likely to be. Useful for prioritizing outreach or splitting audiences by engagement before you send.
Data Source
Fetch Bulk Validation Results
Pull the results of a previously submitted bulk validation job, including status breakdowns and per-address verdicts. Agents can use this to kick off downstream actions once a batch finishes.
Data Source
Look Up Email Status
Query ZeroBounce for the validation status of a specific email address, returning the deliverability classification, sub-status, and domain details. Handy for enriching contact records on the fly.
Data Source
Retrieve Account Credits Balance
Check how many validation credits remain in the ZeroBounce account. Agents can watch this number and trigger alerts or pause workflows before credits run out.
Data Source
Get Email Domain Information
Fetch details about an email address's domain, like whether it's a disposable, catch-all, or free provider. Helps agents make sharper calls about lead quality and risk.
Data Source
Score Email Lead Quality
Run ZeroBounce's AI scoring against an email lead to assess its quality and risk before routing it to sales or marketing. Agents can automatically filter out low-scoring leads based on whatever threshold you set.
Agent Tool
Append Email Data to Contact
Enrich a contact record with additional data from ZeroBounce, such as name, gender, or location inferred from the email address. Fills in CRM gaps without anyone having to do it by hand.
Agent Tool
Flag Invalid Emails in CRM
Automatically mark or tag contacts with invalid or risky email addresses in a connected CRM once validation results come back. Keeps your database clean and stops wasted outreach before it starts.
Agent Tool
Trigger Re-validation Workflow
Re-validate email addresses that were previously marked as unknown or catch-all to get fresh deliverability assessments. Agents can run this on a schedule so contact data doesn't quietly go stale.
Get started with our ZeroBounce connector today
If you would like to get started with the tray.ai ZeroBounce connector today then speak to one of our team.
ZeroBounce Challenges
What challenges are there when working with ZeroBounce and how will using Tray.ai help?
Challenge
Handling ZeroBounce Bulk Validation Asynchronously
ZeroBounce bulk validation jobs are asynchronous — you submit a file or list, and results aren't immediately available. Teams building custom integrations often struggle with polling logic, timeout handling, and stitching results back to original records, especially when processing large lists of tens of thousands of contacts.
How Tray.ai Can Help:
tray.ai's workflow engine natively supports asynchronous polling patterns. You can configure a loop that periodically checks the ZeroBounce bulk job status endpoint, waits for completion, and then processes results — all without custom infrastructure. Built-in error handling and retry logic keeps the pipeline running through API timeouts or partial failures.
Challenge
Keeping Validation Status Synchronized Across Multiple Systems
Most businesses have email addresses spread across a CRM, an ESP, a data warehouse, and potentially a product database. When ZeroBounce marks an email as invalid, pushing that suppression flag to every system consistently is complex — and it's common for invalid addresses to keep receiving emails through a channel that was missed.
How Tray.ai Can Help:
tray.ai acts as the central orchestration layer, fanning out ZeroBounce results to every connected system in a single workflow. One validation result can simultaneously update Salesforce, suppress the contact in Mailchimp or Marketo, write to Snowflake, and post an alert to Slack — so no system is left out of sync.
Challenge
Rate Limiting and Credits Management at Scale
ZeroBounce API calls consume credits, and high-volume validation runs can exhaust monthly credit allocations or hit rate limits during peak processing. Without careful throttling and monitoring, teams can burn through credits on duplicate validations or trigger API errors that break automation pipelines.
How Tray.ai Can Help:
tray.ai lets you build credit-aware workflows that check ZeroBounce account credits before initiating bulk jobs, skip re-validation of recently validated addresses, and apply configurable rate limiting between API calls. You can also set up alerting workflows that notify your team when credit balances drop below a safe threshold.
Challenge
Routing Catch-All and Unknown Emails Appropriately
ZeroBounce returns nuanced statuses beyond simple valid or invalid — catch-all domains, unknown addresses, and spam traps each require different business logic. Teams often default to treating all non-valid results as invalid, which means suppressing potentially good contacts on catch-all corporate domains, or leaving risky addresses in active sends.
How Tray.ai Can Help:
tray.ai's conditional logic and branching lets you build routing rules based on every ZeroBounce status and sub-status combination. Catch-all addresses can go to a low-frequency nurture track, unknown addresses can be queued for re-validation after a delay, and confirmed invalids get suppressed immediately — all within a single, auditable workflow.
Challenge
Integrating Validation into High-Volume Real-Time Form Flows
Calling ZeroBounce synchronously on every form submission can add latency, and a slow API response can block form completions entirely. Teams need a validation pattern that's fast and resilient without degrading the front-end experience.
How Tray.ai Can Help:
tray.ai supports both synchronous and asynchronous invocation patterns. For latency-sensitive flows, you can configure tray.ai to accept the form submission immediately, run the ZeroBounce validation in the background, and then trigger downstream actions — like CRM updates or welcome email sends — only after validation completes. The user-facing experience stays fast regardless of what's happening behind the scenes.
Talk to our team to learn how to connect ZeroBounce with your stack
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Integrate ZeroBounce With Your Stack
The Tray.ai connector library can help you integrate ZeroBounce with the rest of your stack. See what Tray.ai can help you integrate ZeroBounce with.
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Start using our pre-built ZeroBounce templates today
Start from scratch or use one of our pre-built ZeroBounce templates to quickly solve your most common use cases.
Template
Validate New HubSpot Contacts with ZeroBounce in Real Time
Automatically validates the email address of every new contact created in HubSpot, updates the contact with the ZeroBounce status and quality score, and moves invalid contacts to a suppression list.
Steps:
- Trigger on new contact creation event in HubSpot
- Send the contact's email address to ZeroBounce single-address validation API
- Parse validation result including status, sub-status, and quality score
- Update HubSpot contact record with ZeroBounce fields and mark invalid contacts as unsubscribed
Connectors Used: HubSpot, ZeroBounce
Template
Weekly Salesforce Lead List Hygiene with ZeroBounce
On a weekly schedule, pulls all Salesforce leads that haven't been validated in the past 30 days, submits them to ZeroBounce bulk validation, and updates Lead Status and a custom validation field upon completion.
Steps:
- Scheduled trigger fires every Monday morning
- Query Salesforce for leads where ZeroBounce validation date is null or older than 30 days
- Submit email list to ZeroBounce bulk validation endpoint and poll for job completion
- Iterate over results and update each Salesforce Lead with validation status and score
- Send Slack summary report of validation results to the revenue operations channel
Connectors Used: Salesforce, ZeroBounce
Template
Pre-Send Campaign Validation for Mailchimp Audiences
Before a Mailchimp campaign send, automatically pulls the target audience, validates all emails via ZeroBounce bulk API, and removes invalid or risky addresses from the audience to protect deliverability.
Steps:
- Trigger manually or on a campaign-scheduled date in Mailchimp
- Export the target audience member list from Mailchimp
- Submit email addresses to ZeroBounce batch validation and await results
- Archive or tag audience members flagged as invalid, catch-all, or abuse
- Log validation summary to Google Sheets for deliverability reporting
Connectors Used: Mailchimp, ZeroBounce
Template
SaaS Sign-Up Email Validation and Fraud Flagging
Intercepts new user registration events, validates the email with ZeroBounce, and automatically blocks disposable or abuse emails while flagging suspicious registrations for review in your internal ticketing system.
Steps:
- Receive webhook from application on new user registration
- Submit email to ZeroBounce single validation API and check status and sub-status
- If status is invalid, disposable, or abuse, trigger rejection response and send Slack alert
- If status is catch-all or unknown, create a Jira ticket for manual review
- Log all validation outcomes to a database or data warehouse for audit purposes
Connectors Used: ZeroBounce, Jira, Slack
Template
ZeroBounce Bounce-Loop: Auto-Suppress Hard Bounces via Marketo
When Marketo records a hard bounce, automatically re-validates the email in ZeroBounce and updates the Marketo lead as unsubscribed and the Salesforce contact as invalid if confirmed bad.
Steps:
- Trigger on Marketo hard bounce activity event
- Send bounced email to ZeroBounce for single address validation
- If ZeroBounce confirms invalid, update Marketo lead to unsubscribed and set custom invalid flag
- Find matching Salesforce contact and update email opt-out and validation status fields
Connectors Used: Marketo, ZeroBounce, Salesforce
Template
Snowflake Email Quality Audit Pipeline
Runs nightly validation of email fields in a Snowflake contacts table via ZeroBounce, writing quality scores and validation statuses back to a dedicated audit table for data quality monitoring.
Steps:
- Nightly scheduled trigger initiates the workflow
- Query Snowflake for contacts where email_validated_at is null or older than 60 days
- Batch email addresses and submit to ZeroBounce bulk validation API
- Parse all results and upsert validation status, quality score, and timestamp into Snowflake audit table
- Trigger a data quality alert in Slack if invalid email rate exceeds defined threshold
Connectors Used: Snowflake, ZeroBounce