lemlist - The prospecting tool to automate multichannel outreach & actually get replies.

Mailshake - Mailshake lets you build your professional network through a smart and intuitive approach to cold emailing.

Mailmeteor - Send hundreds of personalized emails with Gmail.

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.

GMass - GMass allows you to easily schedule emails, send out mass emails and mail merge campaigns and more with Gmail! Click here to learn about more features!

Polymail - Native email app for email productivity.