Folderly is an email marketing software that helps businesses improve email deliverability and optimize campaigns with advanced email testing, spam filter analysis, and inbox placement tracking.

Folderly includes tools for designing and automating email campaigns, segmenting email lists, and personalizing content to increase engagement. The platform features detailed analytics on open rates and click-through rates, spam trigger detection, technical setup analysis, and template management.
Email deliverability and inbox placement optimization platform
Starting Price
Mail Tester – Free Email Deliverability & Spam Checker
G2 Rating
Starting Price
MailGenius is an email deliverability testing and spam checking tool that helps identify spam triggers, authentication problems, and inbox placement issues before sending.
AI-driven cold email outreach platform with multi-channel support and warm-up
Starting Price
Smartlead.ai is an AI-driven cold email outreach platform that automates sales prospecting with multi-channel email and SMS outreach, automated follow-ups, smart personalization, and email warm-up.
Cold email outreach software with email warmup, AI personalization, and unlimited sequences
Mailarrow is a cold email outreach software enabling hyper-personalized cold email sequences with email warmup, AI personalization, unlimited sequences and mailboxes.