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SMTP Servers

1 min read

✉️ SMTP Email Services and Relays #

TL;DR – As a fibre-only ISP, we do not provide email or SMTP relay services. Your email provider should be providing you with SMTP services. If you are using your current/old ISP’s SMTP service to send emails, you could have an email sending problem if you switch to Atomic.

Customers usually migrate to a service like Gmail to avoid having their email address tied to an ISP domain like @iafrica.com. If you have an email address with an ISP domain, we understand it can be tricky to migrate, so we have collected some advice below.

⚙️ Telkom / SAIX #

If you are using Telkom or SAIX’s SMTP servers for example, smtp.saix.net or smtp.telkomsa.net, it’s important to note that their servers will only support authentication when you make a secure STARTTLS connection, if the connection is unencrypted you will NOT have the option to authenticate.

In other words, when you input your SMTP details, choose STARTTLS for the security/encryption method, and use your username and password to authenticate. This will be the same username and password that you use for incoming mail on the same server.

⚙️ MWEB / iAfrica.com / Polka.co.za #

MWEB have a support document at the following link with an explanation. You might need to reach out to MWEB support for iAfrica or Polka email – https://help.mweb.co.za/articles/mail/mail-application-setup/mweb-email-server-settings

If the above link does not work, please try searching for “MWEB SMTP Settings” in your favourite Search Engine.

⚙️ Free SMTP server #

You can also sign up for a free SMTP server. Please note, as mentioned before, your emails might get flagged as spam, as your emails should be sent from (and verified by) your email provider.

  • Sign up for a free account at smtp2go.com
  • Confirm your account via the link they send you via email
  • Once you are logged in, you will need to skip the sender domain (not possible to verify a domain you don’t own)
  • Click “Get an SMTP username” and press the green button “Set up an SMTP username”
  • On the next page click the blue button “Add SMTP user”
  • Enter your desired username and password (keep them safe as these will be needed to update your email client)
  • The rest of the SMTP details are in the “Connecting via SMTP” section.
    • SMTP Server: mail.smtp2go.com
    • SMTP Port: 2525
    • Alternative ports: 8025, 587, 80 or 25. TLS is available on the same ports.
    • SSL is available on ports 465, 8465 and 443.
  • Then you can go to outlook and add this new SMTP server

🔔 Gmail & Hotmail #

If these SMTP settings sound complicated, consider moving to an email service like Gmail.

Updated on 10 October 2025
Email, SMTP
Direct DebitsScope of Services
Table of Contents
  • ✉️ SMTP Email Services and Relays
  • ⚙️ Telkom / SAIX
  • ⚙️ MWEB / iAfrica.com / Polka.co.za
  • ⚙️ Free SMTP server
  • 🔔 Gmail & Hotmail

About Atomic

Atomic is a Specialist Fibre ISP in Cape Town and the Cape Winelands. Our narrow focus makes us #1 in Google and Hellopeter ratings!

We are Fiercely Independent, Founder-Run and Fibre-Only. Big enough to be Reliable, small enough to be Agile and Friendly. We are Gamer & Techie friendly.

Read our Epic Reviews and Switch to Atomic today!

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