Data Integrations

ZeroBounce

Email verification before any outreach. ZeroBounce checks every email Specter finds before Striker sends. What Ultron can do: Verify email addresses with deliverability scoring. Verification results:

Result	Meaning	Action
Valid	Confirmed deliverable	Safe to send
Catch-all	Domain accepts all email, can’t confirm individual	Send with caution, note in lead record
Invalid	Does not exist or undeliverable	Do not send, exclude from list
Disposable	Temporary email address	Do not send

Connection: ZeroBounce API key — Settings → Integrations → ZeroBounce → Add API key Example:

Verify all emails in the lead batch Specter found yesterday before Striker starts outreach.

Brevo

Brevo handles volume email sending — sequences, campaigns, and transactional messages. What Ultron can do: Send transactional emails, send marketing campaigns, manage sender domain configuration, track delivery and opens. Connection: Brevo API key + domain verification — Settings → Integrations → Brevo → Add API key Gmail vs Brevo:

Use case	Tool
1:1 personalized cold email	Gmail (personal sender)
Multi-lead sequences at volume	Brevo (deliverability at scale)
Nurture campaigns	Brevo
Transactional (onboarding, alerts)	Brevo

Example:

Send the Day 3 follow-up to all 18 leads in the current sequence via Brevo.

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Data Integrations

ZeroBounce

Brevo

​ZeroBounce

​Brevo

ZeroBounce

Brevo