Plusvibe.ai does not offer a permanent free tier but provides a free trial for evaluation. The entry-level Personal plan at $37.00/month covers 25,000 emails, basic warmup, unlimited campaigns, AI sequence writing, and auto-rotation. Upgrading to plusvibe.ai's Business plan at $77.00/month unlocks 150,000 emails, advanced warmup language models, API access, webhooks, Zapier and Make integrations, and AI Reply Agents. G2 reviewers specifically flag the absence of API access on the Personal plan as a notable limitation. The Agency tier at $497.00/month adds isolated sending infrastructure, dedicated IPs, white-labeling, and a private Slack support channel suited for client-facing operations.