Best Free Cold Email Software - Page 2

SubsiMail is a self-hosted cold email sequencing platform. Prospect lists, templates, connected inboxes, and all campaign data live in your own database, not a third-party SaaS. It's built as a self-hosted alternative to Instantly, Smartlead, lemlist, and Apollo, with flat per-inbox pricing instead of per-seat fees, full data ownership and export, no content review, and no third-party access to your contacts or campaigns. Runs as a single Docker container on any $5 VPS. Connect Gmail, Outlook, or any SMTP/IMAP inbox; build multi-step sequences with merge fields and reply detection; manage per-user roles (admin/manager/view-only) with a full audit trail; and integrate via a REST API with personal API keys. The first connected mailbox is free forever.

Prymatica is a B2B lead generation and outbound sales platform that helps businesses generate qualified leads, automate prospect outreach, and book meetings with decision-makers. The platform combines intelligent prospecting, personalized cold email campaigns, sales automation, and appointment-setting strategies to build predictable sales pipelines. Designed for startups, agencies, SaaS companies, and B2B organizations, Prymatica streamlines outbound marketing and sales development while improving campaign performance and conversion rates. Businesses use Prymatica to scale customer acquisition, increase revenue opportunities, and accelerate business growth through data-driven outreach.