Business email that gets things done

Email hosting is a service that runs the mail servers that store, send, and receive email for your domain. When you sign up for email hosting, your provider gives you space on a secure server where your messages, folders, and contacts live, so you can create addresses like and access them from any device. Unlike free email services, email hosting connects your inbox to a domain you own, giving you a professional address and full control over your accounts. A good email hosting provider also handles security, spam filtering, backups, and uptime, so your email simply works. At one.com, email hosting includes ad-free webmail, an integrated calendar, an AI writing assistant, spam and virus protection, and compatibility with apps like Outlook, Gmail, and Apple Mail. All data is stored securely in European data centers, and support is available 24/7.

An email domain is the part of an email address that comes after the @ symbol. In the address , the email domain is yourcompany.com. The domain tells mail servers where to deliver a message, much like a street address tells the postal service where to deliver a letter. With free email services, the provider's domain appears in your address — gmail.com or yahoo.com — so their brand is what recipients see. With your own email domain, your company name appears instead, which looks more professional and helps people remember you. To use your own email domain, you register a domain name and then connect it to an email hosting service. At one.com, both come together: every email plan includes a free domain for the first year, so you can create addresses on your own domain from day one.

Having email on your own domain gives your business credibility, brand visibility, and control. Every message sent from promotes your company name instead of a free email provider's, which makes you look established and trustworthy — an important factor when customers decide whether to open, read, or reply to your emails. It can also improve deliverability: messages sent from an authenticated custom domain are less likely to be flagged as spam. On the practical side, you can create separate addresses for team members, roles, and departments — like info@, sales@, or support@ — and keep the same addresses even if you change email providers, because you own the domain. Finally, domain-based email protects your business identity: nobody else can use addresses on a domain you own. With one.com, you get all of this plus ad-free webmail and built-in spam protection.

The number of email addresses you can create with one.com depends on your plan. Email Essential includes 5 email accounts, each with a 3 GB mailbox and 15 GB of total email storage — a good fit for freelancers and small teams. Email Unlimited includes unlimited email accounts with unlimited mailbox size and storage (subject to a fair use policy), so you can create as many addresses as your business needs: one for every employee, plus role-based addresses like info@, sales@, and billing@. All accounts are created on your own domain and managed from the one.com control panel, where adding a new address takes only a minute. Every account includes ad-free webmail, a calendar, spam and virus protection, and access from any device or email app. You can start small and upgrade to Email Unlimited at any time as your team grows.

one.com protects your email with multiple layers of security that work automatically in the background. Every incoming message passes through a spam filter that analyzes sender reputation, content, and known threat patterns, moving suspicious emails away from your inbox before you see them. Built-in virus scanning checks attachments and blocks malicious files, protecting you from malware and phishing attempts. Industry-standard authentication protocols such as SPF and DKIM verify that mail really comes from the sender it claims — and protect your own domain from being spoofed. Your data is stored in secure European data centers operated by one.com, a European company, and backup and restore features let you recover emails if something goes wrong. Connections between your devices and the mail servers are encrypted with SSL/TLS. These protections are included in every one.com email plan at no extra cost.

Yes. You can access your one.com email on any phone, whether you use an iPhone or an Android device. There are two easy ways to do it. The first is webmail: open mail.one.com in your phone's browser and log in — no installation required. The second is adding your account to your favorite mail app, such as Apple Mail, Gmail, or Outlook, using standard IMAP settings; IMAP keeps every device in sync, so an email you read or delete on your phone shows the same status on your computer. Setup takes a few minutes, and step-by-step guides for each app are available in the one.com help center. Your calendar also syncs to your phone, so meetings and appointments travel with you. Mobile access is included in every email plan, and one.com's 24/7 support can help if you get stuck.