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The Best Outbound Cold Email Tech Stack (2025)
Jan 24, 2025

The Best Outbound Cold Email Tech Stack (2025)
By Ean Tudor | Founder Revenueix
Email Sending Tools
Smartlead.ai: Offers email warmup, automated cold email campaigns, and unlimited inboxes.
Instantly.ai: Provides email warmup, automated cold email campaigns, and unlimited inboxes.
Inbox Infrastructure
Google Workspace: Manually set up inboxes and warm them up before sending.
Outlook: Standard inboxes manually set up and warmed up as needed.
Cheapinboxes: Affordable Google Workspace accounts automatically set up and integrated with Smartlead.
ScaledMail: Affordable option for sending up to 11,000 emails per month with no warm-up required.
Mailreef: Private infrastructure for creating domains and mailboxes, with automatic setup in just a few clicks.
Email Validation Tools
MillionVerifier: Reliable email validation at $77 for 50,000 credits.
DeBounce: More affordable option at $50 for 50,000 credits.
Best Practice: Always verify your new lead lists before sending emails to avoid burning your inboxes.
Catch-All Validation
Bounceban: Affordable option for catch-all validation at $40 for 10,000 credits.
Company Data Sources
Crunchbase: Provides company intent data, funding rounds, and financials.
BuiltWith: Shows which technologies companies are using.
Store Leads: Quality e-commerce data for identifying e-commerce businesses.
Pitchbook: Offers financials, valuations, investor data, market trends, and industry insights.
Lead Scraping Tools
Apollo.io: Affordable lead database. Use tools like Findylead.com to scrape leads more affordably. Always verify Apollo data before sending.
LinkedIn Sales Navigator: Industry-specific targeting to find prospects. Additional enrichment is needed for email and phone data.
ZoomInfo: High-quality data, though less cost-effective compared to Apollo.
Data Enrichment Tools
LeadMagic: Enriches B2B data, including email and mobile phone data, plus other enrichment features.
Prospeo: Provides accurate email, mobile phone data, and LinkedIn Sales Navigator data.
Icypeas: Similar to Prospeo, specializing in B2B data enrichment.
Look-Alike Data Tools
Ocean.io: Helps find look-alike leads to current customers, with enriched company data.
PandaMatch: A more affordable option for finding look-alike leads with enriched company data.
Email Workflow Tool
Clay: A comprehensive outbound workflow tool for data enrichment, waterfall email validation, and personalized outreach automation.
Deliverability Optimization Tool
EmailGuard: Includes SPF, DKIM, DMARC record checks, domain monitoring, blacklist checks, inbox placement tests, and spam word detection.
Let’s Grow Together
If you're running a B2B business, SaaS, or agency with a proven offer and want to scale with an outbound cold email system, book a discovery call today.