ThaiDataHosting Email Hosting 2026
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Email Hosting Overview
ThaiDataHosting bundles email into every hosting plan — Cloud Linux Fusion, VIP, WordPress Hosting and VPS SSD — so you can create @yourdomain.com mailboxes at no extra cost. The detail that sets it apart from many hosts is the control panel: ThaiDataHosting runs DirectAdmin, so everything email-related lives inside its E-Mail Manager rather than a generic dashboard. Storage sits on NVMe SSD at a Bangkok node, which keeps in-country mail delivery low-latency, and every plan carries a 99.99% uptime target.
Each mailbox supports the standard protocols — IMAP, POP3 and SMTP — alongside Roundcube webmail served over HTTPS thanks to the Free SSL included on every plan. You also get the SpamAssassin spam filter, email forwarders, autoresponders, and full SPF/DKIM/DMARC control through DirectAdmin DNS Management. For a Thai business, a custom domain address such as [email protected] earns more trust from customers and partners than a free Gmail or Hotmail account, and consolidating authentication records in DirectAdmin makes outgoing mail more likely to reach the inbox.
Create a Mailbox in DirectAdmin
On ThaiDataHosting you create mailboxes inside DirectAdmin, not a third-party panel. Log in to DirectAdmin, open E-Mail Manager → E-Mail Accounts, then click Create Account. Enter the username (the part before @yourdomain.com, for example "sales"), set a strong password of at least 12 characters, choose a mailbox quota, and click Create. The whole process takes under two minutes.
The new mailbox is ready immediately — open it in Roundcube webmail or configure it in a desktop or mobile mail client. Because the underlying storage is NVMe SSD, opening folders that hold a large volume of mail stays responsive, and you can raise the quota later from the same E-Mail Manager screen as the account grows.
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Visit ThaiDataHosting →Roundcube Webmail over HTTPS
Webmail lets you read and send mail from any device without configuring a client. ThaiDataHosting's DirectAdmin uses Roundcube as its standard webmail, which you can reach directly at yourdomain.com/webmail or yourdomain.com/roundcube, or by clicking the Webmail button next to an account inside DirectAdmin's E-Mail Manager. Since every plan ships with Free SSL, the webmail interface always loads over HTTPS.
Roundcube is DirectAdmin's default webmail and is the right choice for most users: a clean interface, drag-and-drop folders, and a rich text editor. Some installations may also expose SquirrelMail or RainLoop as alternatives, but for everyday business mail Roundcube is the most complete and the easiest to navigate, so there is rarely a reason to switch.
Mail Client Setup (Outlook, iPhone)
To use Outlook, Apple Mail or Thunderbird with a ThaiDataHosting mailbox, point the client at the mail.yourdomain.com server. For incoming mail use IMAP on port 993 with SSL/TLS, or POP3 on port 995 with SSL/TLS. For outgoing mail use SMTP on port 465 (SSL) or 587 (STARTTLS). Sign in with your full email address — for example [email protected] — and the password you set when creating the mailbox in DirectAdmin.
Prefer IMAP over POP3 wherever possible: IMAP keeps every device in sync with the server, while POP3 downloads mail to a single device and removes it from the server. On an iPhone, go to Settings → Mail → Accounts → Add Account → Other → Add Mail Account, then enter the IMAP and SMTP values above. The same settings work identically across desktop and mobile clients.
Spam Filtering with SpamAssassin
ThaiDataHosting includes SpamAssassin on every plan, and you manage it directly from the SpamAssassin section of DirectAdmin. Enable the filter to start screening incoming mail, then adjust the spam score threshold — a lower number is stricter — and optionally turn on automatic deletion for messages that score very high. A blacklist lets you block known spam senders or domains, while a whitelist protects trusted senders from being filtered by mistake.
If unwanted mail still gets through, tighten the score threshold or add the offending senders to your blacklist on a case-by-case basis from the same DirectAdmin SpamAssassin page. Because the filter runs server-side before mail reaches your inbox, the rules apply consistently across webmail and every connected client.
SPF, DKIM, DMARC in DirectAdmin DNS
SPF, DKIM and DMARC are DNS records that authenticate your outgoing mail so it lands in the recipient's inbox instead of the spam folder. SPF declares which hosts may send on behalf of your domain to prevent spoofing; DKIM adds a digital signature so recipients can verify the message was not altered; and DMARC sets the policy for mail that fails SPF or DKIM (none, quarantine, or reject). On ThaiDataHosting you manage all three from DirectAdmin DNS Management.
Open DirectAdmin, go to the domain's DNS Management page, and add or edit the TXT records for SPF, DKIM and DMARC. DirectAdmin typically generates the DKIM key automatically once email is enabled for the domain, so in many cases you only need to confirm the SPF record and add a DMARC policy. Once the records propagate, major providers such as Gmail and Outlook will see your domain as authenticated.
Email Forwarders
A forwarder automatically routes mail arriving at an @yourdomain.com address to another mailbox — for example sending [email protected] to a personal Gmail. On ThaiDataHosting you create forwarders from DirectAdmin E-Mail Manager → Forwarders: enter the source address and the destination, and you can list several destinations at once. A catch-all forwarder captures mail sent to any @domain address that has no real mailbox behind it.
Be aware that forwarding to Gmail can cause SPF to fail, because Gmail re-sends the message from its own IP addresses, which are not listed in your SPF record. If you run into deliverability problems with forwarded mail, consider enabling SRS (Sender Rewriting Scheme) so the forwarded message passes SPF checks at the final destination.
Business Email Tips
Beyond correct configuration in DirectAdmin, a few habits keep your business email professional. Add a consistent signature with your name, title, contact number and website to every message; write clear subject lines so recipients know what action is needed; and set an autoresponder from E-Mail Manager when you are away. Use a strong, unique password for each mailbox, and keep a periodic backup of important mail.
On the technical side, the two settings that matter most are already covered above: enable SpamAssassin to control inbound junk, and configure SPF, DKIM and DMARC in DirectAdmin DNS so your outbound mail reaches the inbox. Because storage is NVMe SSD, you can comfortably raise a mailbox quota in DirectAdmin as it grows without worrying about slow access to large archives.