Warmbox.ai is an AI-powered SaaS platform that automates the email warm-up process by sending realistic, human-like interactions from your inbox. It helps ensure cold emails reach recipients' main inboxes rather than spam folders.

Warmbox automates email warm-up by sending emails that are opened, bookmarked, replied to, and marked as favorites through a network of 35,000+ private inboxes from 100+ countries. The platform works with Gmail, Outlook, SMTP, and others with detailed analytics on email performance.
AI-powered email warm-up platform for improving deliverability
Starting Price
MailMentor is an AI-powered email assistant designed to help write better cold emails with real-time optimization feedback.
Email warm-up software improving sender reputation through AI-driven warm-up activity
Starting Price
Mailivery is an email warm-up software that improves email sender reputation by facilitating AI-generated sales conversations in users' inboxes. It features unlimited mailbox warm-up with no per-inbox limits.
Flexible Email API for developers
Founded
G2 Rating
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Mailgun is a transactional email API platform providing reliable email sending and deliverability management for developers and businesses.