Mail client settings

You can use Domain Mailbox in two ways: in the browser through Webmail, or in clients such as Outlook, Thunderbird, Apple Mail and phone mail apps, which receive over IMAP/POP3 and send over SMTP.

#Use Webmail

There are two ways into Webmail:

• Sign in directly: go to https://webmail.yeap.cloud/ (or 域名邮箱 → Webmail 登录 in the console navigation) and sign in with the full email address (such as alice@example.com) and the mailbox password.
• Open it from the console without a password: click Open Webmail in the Mail Users list or the My Domains list. A one-time sign-in token opens that mailbox in a new window, which is handy when an administrator is helping someone troubleshoot.

In the Webmail settings panel, mailbox users can manage their own:

• Signature: the email signature, plus Auto-Reply for automatic replies, with a subject, a message body and start and end dates. Useful when you're away.
• Password: change your own sign-in password.
• Storage: see how much storage you're using.

#Find your client settings

The console shows the server addresses and ports your client needs:

1. Open 域名邮箱 → 我的域名 (My Domains) and click DNS Settings on the domain's row.
2. The 邮件客户端配置 (mail client settings) table at the bottom of the dialog has three rows: SMTP (发信) for sending, IMAP (收信) and POP3 (收信) for receiving. Each row gives the server (服务器), port (端口) and encryption (加密).

The server hostname depends on the mail node your domain is on, so always use the value shown in the console. Don't guess it (for example, don't assume it's mail.<your domain>). At the time of writing, the console shows these ports and encryption settings:

If the console shows different values, use the console's values.

Credentials: the username is the full email address (such as alice@example.com) and the password is that mailbox's password. Receiving and sending use the same username and password.

#IMAP or POP3

• IMAP (recommended): mail stays on the server, so every device (computer, phone, Webmail) sees the same messages, read status and folders.
• POP3: the client downloads mail to the local device. This suits receiving mail on a single computer only. Many clients delete mail from the server by default after downloading it, and then Webmail and your other devices can't see it. If you use POP3, turn on the client's "leave a copy on the server" option.

#Set up common clients

#Thunderbird

1. Go to Account Settings → Account Actions → Add Mail Account and enter your name, full email address and password.
2. Click Configure manually.
3. Incoming server: protocol IMAP, hostname = the IMAP server from the console, port 993, connection security SSL/TLS, authentication "Normal password", username = your full email address.
4. Outgoing server: hostname = the SMTP server from the console, port 465, connection security SSL/TLS, authentication "Normal password", username = your full email address.
5. Click Re-test, and once the test passes, click Done.

#Outlook (Windows)

1. Go to File → Add Account and enter your full email address. Expand Advanced options, select Let me set up my account manually, then choose IMAP.
2. Incoming mail: server = the IMAP server from the console, port 993, encryption method SSL/TLS.
3. Outgoing mail: server = the SMTP server from the console, port 465, encryption method SSL/TLS.
4. Enter the mailbox password to finish.

#iPhone / iPad (Mail app)

1. Go to Settings → Mail → Accounts → Add Account → Other → Add Mail Account.
2. Enter your name, full email address, password and a description, tap Next and choose IMAP.
3. For Incoming Mail Server and Outgoing Mail Server, enter the IMAP and SMTP hostnames from the console. Use your full email address as the username and the mailbox password as the password.
4. After saving, check the account's Advanced settings: incoming should use SSL on port 993, and the outgoing server should use SSL on port 465.

#Android and other clients

Choose "Other / Manual setup / IMAP", then enter the server, port, encryption (SSL/TLS) and credentials from the settings above.

#Sending and storage limits

• Each plan sets a daily sending limit and a maximum attachment size. The plans page has the current values. For very large files, share a cloud storage link instead.
• When a mailbox runs out of storage, it can't receive new mail. An administrator can raise the mailbox's Storage Quota (GB) under Mail Users in the console, or the user can delete old mail.

#Troubleshooting

The client says authentication failed: check that the username is the full email address and not just the part before the @. Check that the mailbox is Active in the console and that its domain is paid for and active. If the password is forgotten, an administrator can click Reset Password under Mail Users in the console.

Receiving works but sending doesn't: check that authentication is turned on for the outgoing (SMTP) server, that it uses the same username and password as the incoming server, and that the port and encryption match the console.

Sent mail lands in the recipient's spam folder: click Verify DNS in DNS Settings and make sure MX, SPF, DKIM and DMARC all pass.

Mail from outside doesn't arrive: check that the domain's MX record points to the hostname shown in the console, and that no old MX records still point to your previous mail service.

#Related

• Domain Mailbox overview
• Domains, mailboxes, aliases and forwarding