
lemlist
Instantly.ai
Apollo.io
Reply.io
Mailshake
Hunter.io
SmartLead.ai
Snov.io
MailApi.dev
hiaireply.com
Superhuman
Mailgun
Email on Acid
Twilio
Emails.Reply.io
Loops.so
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.
MailApi.dev is a developer-focused email infrastructure platform that helps you: - Send inbox-ready transactional emails - Verify email addresses in real time - Create reusable email templates - Schedule Email Broadcast - Create Email Automation - Use a simple, powerful API and dashboard Start free with 3,000 emails.
lemlist
MailApi.devInstantly.ai - Build your own infinitely scalable cold email outreach system with Instantly.
hiaireply.com - AI-powered email client for instant replies. Choose your AI model, customize your voice, respond in one click. Built for customer service at scale. Hours saved daily.
Apollo.io - Apolloโs predictive prospecting, sales engagement, and actionable analytics help the teams to reach its full revenue potential.
Superhuman - Superhuman is an email management tool.
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.