# X Mailer

> X Mailer is a bulk email sender for Windows that uses the email accounts you already own. Add accounts, upload your list, write once, press start. $75 a year.

Every page below is also served as Markdown at its own address to any client that sends `Accept: text/markdown`. Contact: support@xmailer.to.

## Pages

- [X Mailer — send bulk email from your own accounts, on Windows](https://xmailer.to/index.md): X Mailer is a bulk email sender for Windows that uses the email accounts you already own. Add accounts, upload your list, write once, press start. $75 a year.
- [Bulk email software for Windows: how it works](https://xmailer.to/product.md): How X Mailer sends bulk email on Windows: add your own email accounts, upload a spreadsheet, write once, then watch every message go out. Pause any time.
- [Rotating SMTP proxy with port 587 open](https://xmailer.to/proxy.md): A rotating SMTP proxy for sending email: ports 25, 465 and 587 are open on every plan, and your connection changes every 10 minutes or on every request.
- [Pricing: app $75 a year, proxy from $100 a month](https://xmailer.to/pricing.md): X Mailer is $75 for a one-year licence. The X Proxy starts at $100 a month, or $120 gets you the app plus your first month of proxy.
- [FAQ: the app, the proxy and billing](https://xmailer.to/faq.md): Answers about X Mailer and the X Proxy: what you need to send, Windows 10 and 11, open mail ports, paying, cancelling and moving your licence.
- [Download: how you get the installer](https://xmailer.to/download.md): X Mailer is not a public download. Buy a plan and we email you x_mailer_setup.exe and your licence for Windows 10 and 11, usually within a few hours.
- [Contact](https://xmailer.to/contact.md): One address for questions before you buy and help once you have. A real person replies, usually the same working day.
- [Guides: bulk email, mail ports and proxies](https://xmailer.to/blog.md): Guides to sending email from your own accounts with X Mailer: setting up, choosing a port, and using a rotating proxy for your campaigns.
- [About X Mailer](https://xmailer.to/about.md): X Mailer is a Windows app for sending bulk email from your own accounts, plus the X Proxy. Who it is for, how we work, and what we don’t do.
- [API for developers and agents](https://xmailer.to/developers.md): Start an X Mailer or X Proxy purchase from code, and read every page as Markdown. The checkout API, its OpenAPI description and the API catalog.

## Guides

- [How to set up and test a SOCKS5 proxy](https://xmailer.to/blog/socks5-proxy-setup.md): Set up a SOCKS5 proxy step by step. What each part of the endpoint means, how to sign in, and how to test the address, location and ports before you rely on it.
- [Residential proxies by country: choosing a location](https://xmailer.to/blog/residential-proxy-by-country.md): How country and region targeting works on a residential proxy, which location to choose for your accounts, and how to check where your connection really appears.
- [Where do residential proxy IPs come from?](https://xmailer.to/blog/where-residential-proxies-come-from.md): Residential proxy IPs are real home connections. How networks get them, what consent-based sourcing looks like, and the questions that expose a badly sourced pool.
- [Clean proxy IPs: how to check an address's reputation](https://xmailer.to/blog/clean-proxy-ip-reputation.md): What makes a proxy IP clean, how shared addresses pick up a bad reputation, and how to check any proxy address against public blocklists in minutes.
- [Unrestricted proxy: what "all ports open" means](https://xmailer.to/blog/unrestricted-proxy-all-ports-open.md): What an unrestricted proxy is, which ports most proxy networks close and why, and how to test any proxy's ports yourself before you rely on it.
- [What is an SMTP proxy? Why port 587 gets blocked](https://xmailer.to/blog/what-is-an-smtp-proxy.md): An SMTP proxy carries your mail connection through another internet address. How it works, how it differs from SOCKS5 and a relay, and why port 587 is blocked.
- [Residential vs datacenter proxies for email](https://xmailer.to/blog/residential-vs-datacenter-proxies-for-email.md): Residential or datacenter proxy for email? What each kind is, why the mail ports matter more than the kind, and what else to compare before you buy.
- [Rotating proxies for email: sticky or per-send?](https://xmailer.to/blog/rotating-proxies-for-email.md): Sticky or per-request? How a rotating proxy for email changes your address, which mode suits your sending, and how it fits with account rotation.
- [SMTP rotation: share a campaign across accounts](https://xmailer.to/blog/smtp-rotation.md): SMTP rotation sends one campaign through several email accounts in turn. Why it helps, which X Mailer settings matter, and how it differs from IP rotation.
- [Port 587 blocked? How to test it and what to do](https://xmailer.to/blog/port-587-blocked.md): Port 587 not working? What a timeout, a refused connection and a sign-in error each mean, how to test the port on Windows, and the fixes to try in order.
- [Port 587 vs 465 vs 25: which SMTP port to use](https://xmailer.to/blog/smtp-port-587-vs-465-vs-25.md): SMTP ports 587, 465 and 25 do different jobs. Which one your mail app should use, how to check that port 587 is open, and what changes behind a proxy.
- [What is X Mailer, and who is it for?](https://xmailer.to/blog/what-is-x-mailer.md): X Mailer is a Windows app that sends your email campaigns through the accounts you already own. Who it is for, how a send works, and where the proxy fits.

## Optional

- [Terms of service](https://xmailer.to/terms.md): The terms for buying and using X Mailer and the X Proxy, in plain English: the app licence, the monthly proxy, acceptable use, paying, refunds and liability.
- [Privacy policy](https://xmailer.to/privacy.md): What X Mailer collects when you buy, pay, chat or visit the site, why we use it, who we share it with, how long we keep it, and your rights under UK GDPR.