You are reading this article to understand why there may be a delay in receiving emails to your inbox.
Email delivery is not always instant. While many messages arrive within seconds, others may take longer due to the security and filtering processes that take place before the message reaches your inbox.
Contents
- 1. Why does email delivery sometimes take longer?
- 2. Spam filtering and security checks
- 3. What checks are performed?
- 4. Trusted senders and contacts
- 5. External delays (outside our control)
- 6. Summary
1. Why does email delivery sometimes take longer?
Before an email is delivered to your inbox, it must pass through multiple validation and security layers. These checks are essential to protect your mailbox from spam, phishing, and malicious content.
While most messages are processed quickly, in some cases these checks can introduce a short delay (between 10-40 seconds).
2. Spam filtering and security checks
Our email platform uses enterprise-grade filtering to ensure that unwanted or harmful messages are blocked before reaching your inbox.
This means every incoming message is carefully analysed before delivery. This process is designed to prioritise security and reliability over raw speed.
3. What checks are performed?
Each email may go through several layers of inspection, including:
- Sender authentication checks (SPF, DKIM, DMARC)
- IP reputation and blacklist checks
- Content scanning to detect spam or malicious links
- Attachment analysis for potential threats
- Heuristic and behavioural filtering
These checks often rely on external reputation and security services, which can occasionally add a small delay depending on response times.
4. Trusted senders and contacts
If you regularly receive emails from a specific sender, you can add them to your contacts or mark them as a trusted sender.
This ensures their emails are delivered directly to your inbox and are not marked as spam.
Important: Even trusted senders still go through basic security checks to ensure system integrity, so this does not always eliminate delivery delay entirely.
5. External delays (outside our control)
In some cases, delays occur before the email even reaches our servers. These can include:
- Slow processing or queuing on the sender’s mail server
- Filtering or rate limiting by third-party providers (such as Microsoft or Apple)
- Network routing delays between servers
These delays are outside our infrastructure and cannot be controlled from our side.
6. Summary
Short delivery delays are a normal part of modern email systems and are usually the result of security checks designed to protect your mailbox.
In most cases, emails are delivered within seconds, but occasional delays can occur depending on the complexity of the checks and external factors.
This process ensures your inbox remains secure, reliable, and protected from spam and malicious content.
