Skip to content

Email Hosting Setup

This guide walks you through setting up your InteSys email hosting, from domain verification to creating your first mailbox.

Step 1: Order Email Hosting

  1. Log in to the InteSys Client Portal
  2. Navigate to Services > Order New > Email Hosting
  3. Choose your plan:
    • Corporate Email — Full groupware with Zimbra/Carbonio
    • Professional Email — Lightweight modern email with Stalwart
  4. Enter the number of mailboxes and storage tier
  5. Confirm your order

Step 2: Add Your Domain

After provisioning, add your email domain:

  1. Go to Services > Email Hosting > Domains
  2. Click Add Domain
  3. Enter your domain name (e.g., example.com)

Step 3: Verify Domain Ownership

You must prove you own the domain before email services are activated. Add the verification TXT record to your DNS:

example.com.    3600    IN    TXT    "intesys-verify=abc123def456"

Verification Time

DNS propagation can take up to 48 hours, but typically completes within 15 minutes. Click Verify Now in the portal to check status.

Step 4: Configure DNS Records

After verification, configure the required DNS records for email delivery. See the DNS Configuration Guide for complete details.

At minimum, you need:

; MX record — routes email to InteSys servers
example.com.    3600    IN    MX    10 mx1.intesys.io.
example.com.    3600    IN    MX    20 mx2.intesys.io.

; SPF record — authorizes InteSys to send on your behalf
example.com.    3600    IN    TXT    "v=spf1 include:_spf.intesys.io ~all"

; Autodiscover (for automatic client configuration)
autodiscover.example.com.    3600    IN    CNAME    autodiscover.intesys.io.
autoconfig.example.com.      3600    IN    CNAME    autoconfig.intesys.io.

Do Not Skip SPF

Without a valid SPF record, email sent from your domain may be rejected or marked as spam by receiving servers. Always configure SPF before sending email.

Step 5: Create Mailboxes

  1. Go to Services > Email Hosting > Mailboxes
  2. Click Create Mailbox
  3. Fill in the details:
    • Email address: e.g., [email protected]
    • Display name: e.g., "John Silva"
    • Password: Set an initial password (user can change later)
    • Storage quota: Assign from your plan's pool
  4. Click Create

Bulk Mailbox Creation

For organizations with many users, use the CSV import feature:

  1. Download the CSV template from the portal
  2. Fill in one row per mailbox (email, display name, password, quota)
  3. Upload the completed CSV under Mailboxes > Import

Step 6: Configure Email Clients

Automatic Configuration

Most modern email clients (Outlook, Thunderbird, Apple Mail, mobile devices) will auto-configure using the autodiscover/autoconfig DNS records.

Manual Configuration

If automatic configuration fails, use these settings:

Setting Incoming (IMAP) Incoming (POP3) Outgoing (SMTP)
Server mail.intesys.io mail.intesys.io smtp.intesys.io
Port 993 (SSL) 995 (SSL) 587 (STARTTLS)
Encryption SSL/TLS SSL/TLS STARTTLS
Username Full email address Full email address Full email address
Authentication Normal password Normal password Normal password

Use IMAP Over POP3

IMAP keeps your email synchronized across all devices. POP3 downloads messages to a single device and may delete them from the server. We recommend IMAP for all users.

Step 7: Access Webmail

Access your email from any browser at:

  • Corporate plan: https://mail.intesys.io
  • Professional plan: https://mail.intesys.io

Log in with your full email address and password.

Next Steps