
lemlist
Instantly.ai
Apollo.io
Reply.io
Mailshake
Hunter.io
SmartLead.ai
Snov.io
Unitpost
Resend
Brevo
Mailgun
Twilio
SendGrid Email API
AutoSend
Postmark
lemlist is the #1-ranked sales engagement platform on G2, used by 20,000+ B2B companies to run multichannel outbound at scale. It covers the full outbound workflow in a single tool: a 600M+ contact database, waterfall enrichment (80% email find rate across 8 providers), multichannel sequences (email, LinkedIn, WhatsApp, phone), AI-powered personalization, a complete deliverability stack, unified inbox, and native CRM integrations with HubSpot, Salesforce, and Pipedrive. Founded in 2018, bootstrapped to $50M ARR and profitable.
lemlist
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Instantly.ai - Build your own infinitely scalable cold email outreach system with Instantly.
Resend - Email for developers
Apollo.io - Apollo’s predictive prospecting, sales engagement, and actionable analytics help the teams to reach its full revenue potential.
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
Reply.io - Reply.io is an AI-driven sales engagement platform that automates cold outreach through unlimited mailboxes, converts website traffic into booked meetings with AI Chat, and empowers your team to streamline the entire sales process with AI SDRs.
Mailgun - A set of powerful APIs that enable you to send, receive and track email from your app effortlessly whether you use Python, Ruby, PHP, C#, Node.js or Java.