B2BSender

B2BSender brings the separate pieces of a cold email operation into one place. You connect your own mailboxes over SMTP/IMAP — Google Workspace, Outlook or a self-hosted server — run them through warm-up, clean the contact list with verification, then push multi-step sequences that personalise each message. Replies land in a shared inbox the product calls Unibox, so a team can work the same pipeline without losing track of who answered.

Highlights

• Unlimited sender accounts on every plan, including your own SMTP/IMAP server
• Automated mailbox warm-up aimed at inbox placement instead of the spam folder
• Contact verification before sending, to protect sender reputation
• Multi-step sequences with per-recipient personalisation
• Shared reply inbox and campaign analytics in the same dashboard

The product is built for founders, sales teams and agencies running outreach at volume. Pricing is a paid subscription with a 14-day trial that does not ask for a card. Worth noting for anyone browsing this directory: the AI parts of the roadmap — writing helpers, spam scoring and an MCP endpoint for agent access — are announced as coming, not shipped.