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SocketLabs
Lansdale, Pennsylvania, United States · Founded 2000
11-50 employees
Sourced & current · updated Jul 13, 2026
SocketLabs is an email delivery and infrastructure platform providing SMTP relay services, email APIs, and deliverability tools for businesses and developers.
Where they sit
Stack tier: Marketing Technology (C)
Email MarketingMarketing Technology
A mid-tier email delivery and SMTP relay provider competing against larger platforms like SendGrid and Mailgun, differentiated by strong support and deliverability focus.