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E-Warmup is an automated email warmup platform that improves email deliverability by building sender reputation through authentic engagement signals. It connects to Gmail, Outlook, SMTP, SendGrid, Amazon SES, Mailgun, and other major email providers to warm...

Klar is a free AI-powered spam filter for Apple Mail that runs entirely on your Mac. It uses a modern multilingual model to detect spam, phishing, and marketing emails across 100+ languages, moving unwanted messages to Junk automatically. With no account...

Bento is a bootstrapped email marketing and automation platform combining campaigns, transactional email, segmentation, and visual workflow automation for SaaS companies and solopreneurs. It offers developer-friendly SDKs for Rails, Laravel, Node, and Python.

Missive is a collaborative shared inbox that combines team email, chat, and task assignment in one app. Teams use it to manage shared addresses and discuss messages internally before replying. The bootstrapped company launched in 2015 from Quebec, Canada.