Maritime
Day 21 after signup
Residential IPs, Claude Code on Sandboxes, and any screen size
Why it works
- Open with a brief framing sentence so readers know the email is a roundup rather than a single-feature announcement.
- Give each update its own compact paragraph with a clear benefit and a link to practical details.
- Close with a direct invitation for feedback and a personal sign-off to make a technical update feel approachable.
How it is built
- Personal greeting
- Weekly update introduction
- Residential IP feature
- Claude Code integration
Email copy
Hi [First name], Here's what's new on Maritime this week. Your agents can now go online from a residential IP. Pick a country, and optionally a state or city, and sites that refuse cloud addresses see an ordinary home connection. Keep the same IP for an agent or get a new one for every connection. It works on any paid plan. Read about residential IPs. You can also now run Claude Code cloud sessions on Maritime Sandboxes. When your team starts a session at claude.ai/code, it gets its own sandbox, and the sandbox ends after the session goes idle. In our test, Claude was working 4.4 seconds after the session was queued. You need a Claude Team or Enterprise organization with self-hosted environments turned on, and the guide walks you through the rest. Set up Claude Code on Sandboxes. Linux computers can now have any screen size from 640 to 1920 pixels a side, including a square 1024 x 1024. Set it once when you create the computer, through the API, SDKs, CLI or MCP server. See computer screen sizes. Would love to keep the feedback coming. Thanks for building with us. Best, Ary Shrivastava Cofounder, Maritime If you'd rather not receive these, unsubscribe here.