Email server settings

OX Cloud US SMTP, IMAP & POP3 settings

Use these settings to add your OX Cloud US account (cloudus.xion.oxcs.net) to Outlook, Apple Mail, Thunderbird, your phone or any app that sends email over SMTP.

Incoming mail

IMAP

Server
imap.us.appsuite.cloud
Port
993
Security
SSL/TLS
User name
full email address
Authentication
Normal password
Server
imap.us.appsuite.cloud
Port
143
Security
STARTTLS
User name
full email address
Authentication
Normal password

Incoming mail

POP3

Server
pop.us.appsuite.cloud
Port
995
Security
SSL/TLS
User name
full email address
Authentication
Normal password

Outgoing mail

SMTP

Server
smtp.us.appsuite.cloud
Port
587
Security
STARTTLS
User name
full email address
Authentication
Normal password

How to set up OX Cloud US in a mail app

  1. Choose add account → manual setup (or "other account") in your mail app.
  2. Enter your full OX Cloud US email address and password.
  3. Pick IMAP for incoming mail and enter the server, port and security from the table above.
  4. Enter the SMTP server for outgoing mail (smtp.us.appsuite.cloud, port 587) and enable authentication with the same login.

If the login keeps failing, enable IMAP/POP access in the OX Cloud US web settings and use an app password if your account uses two-step verification.

Official help

Settings from the Mozilla Thunderbird ISP database (MPL 2.0), which mail clients use for automatic setup.

OX Cloud US email settings: FAQ

What is the OX Cloud US SMTP server?

The outgoing (SMTP) server of OX Cloud US is smtp.us.appsuite.cloud, port 587 with STARTTLS. Log in with your full email address.

What are the OX Cloud US IMAP settings?

Incoming mail (IMAP): server imap.us.appsuite.cloud, port 993, security SSL/TLS, user name: your full email address.

Should I use IMAP or POP3?

Use IMAP if you read your email on more than one device: messages and folders stay in sync on the server. POP3 downloads messages to one device and is only useful for offline archives on a single computer.

Why does my OX Cloud US login fail in a mail app?

Most providers block plain password logins from mail apps when two-step verification is on. Create an app-specific password in your account's security settings, or use an app that supports OAuth sign-in. Also check that IMAP or POP access is enabled in the webmail settings.

Email validation API

Validate cloudus.xion.oxcs.net addresses before you send

emailvalidation.io checks syntax, MX records and the mailbox over SMTP, flags disposable, role and free addresses and returns a quality score, in one request.

Read the docs

100 free validations every month. No credit card required.

GET https://api.emailvalidation.io/v1/info?email=name@cloudus.xion.oxcs.net

{
  "email": "name@cloudus.xion.oxcs.net",
  "domain": "cloudus.xion.oxcs.net",
  "mx_found": true,
  "smtp_check": …,
  "free": …,
  "disposable": false,
  "state": "…"
}

Free email tools

Email validator Does this mailbox exist? Email spam checker Will your email land in spam? Bulk email validator Clean a list of up to 50 addresses. Email syntax checker Is the address written correctly? Disposable email checker Is this a throwaway address? MX record lookup Which servers receive mail for a domain? SPF record checker Is the SPF record valid? DMARC record checker Is the domain protected against spoofing? DKIM record checker Is the DKIM key published? Email server settingsSMTP, IMAP and POP3 for 119 providers. Disposable email domains9,100+ temporary email domains.

Start using our email validation software today!

Get 100 validations per month for free