Inboxy

Inboxy is a sending setup for teams that live on cold email. It sells Google Workspace mailboxes at $3 each per month and runs warmup on them for the same flat rate per inbox. You skip the usual three-vendor shuffle: Workspace seats from Google, a warmup subscription from someone else, and a spreadsheet to track which mailbox sits on which domain.

The warmup runs through a private network of real browser sessions instead of API pings. Those inboxes open your mail, reply to it, mark it important and pull it out of spam. Mailbox providers read exactly those signals when they decide where your next campaign lands, so sender reputation builds from behavior rather than from a warmup counter. Volume starts low and climbs as the inbox responds.

The company is Inboxy OÜ, registered in Tallinn, Estonia. Agencies that sell cold email deliverability as a service tend to care as much about the workspace split as the warmup itself. The catch is the shape of the offer. There's no free plan and no trial, refunds are not offered, and mailboxes you buy from Inboxy are Google Workspace only, on US or EU IP accounts. Warmup does work on inboxes you already own.

Getting Started

1. Create an account at inboxy.io and name your workspace. Agencies can run one workspace per client, each with its own domains and invoice.
2. Connect a domain. Either link a registrar such as Porkbun, Namecheap, Cloudflare, Spaceship, Dynadot or Name.com with an API key, or add the DNS records yourself. Inboxy sets nameservers, MX, SPF, DKIM and DMARC and shows the status for every mailbox.
3. Buy mailbox licenses at $3 each per month, then create mailboxes with a name and local part. Login credentials appear in the dashboard.
4. Connect your sequencer. Instantly, Smartlead, PlusVibe, EmailBison, lemlist, Apollo and Reply.io hook up automatically at no cost, with no CSV export.
5. Turn on warmup for the inboxes you want to build up, pick the days and time zone it runs in, and let it work.