Why Emails Are Not Sending

Updated 27 August 20251 min read6 steps

1. Confirm SMTP settings

   • Server: smtp.mweb.co.za

   • Port: 587

   • Authentication: Enabled (full email and password)

   • Encryption: Enabled

2. Review sending rules

   • Up to 25 recipients per message.

   • About 400 messages per hour.

   • 35 MB maximum message size.
     If reached, resend later, split recipients, or reduce attachments.

3. Check the basics

   • Internet connected; recipient address correct.

   • Your chosen mailbox storage size isn’t full.

4. Read any bounce/error

   • Oversize: compress files or use a sharing link.

   • High volume: wait, then resend in smaller batches.

   • Auth/relay denied: re-enter password; ensure authentication is on.

5. Ask the recipient to check their side

   • Ask them to review Spam/Junk and Quarantine.

   • If they had an outage, delivery may be deferred and arrive later.

6. Try Webmail

   Send from Webmail. If it works there, remove and re-add your account in the app.