Emailwarmup.com
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Emailwarmup.com automates the process of building sender reputation by sending legitimate emails from your account to real inboxes, creating a natural engagement history. The platform includes a free spam checker that scans your campaign content against 15+ email filter providers and returns a deliverability score before sending. It works with most email services and requires minimal setup.
Ideal for growing teams that need warmup without technical overhead or budget for enterprise tools. Offers a transparent free tier for testing, then scales to handle multiple accounts and larger campaigns. The combination of automated warmup and built-in testing makes it efficient for SMBs moving beyond basic email sending.