The biggest problem with email security is the human element and its exploitation through social engineering, primarily via phishing attacks. While technical solutions have advanced, the susceptibility of users to manipulation remains the primary point of failure, as human error accounts for a vast majority of data breaches.
Common email threats include phishing, business email compromise, and malware attacks, each posing significant risks to organizations. As email threats evolve, it is essential for businesses to adopt effective security best practices and promote security awareness among employees.
The "most secure" email provider often comes down to Proton Mail and Tuta (formerly Tutanota), both offering strong end-to-end encryption (E2EE) and zero-access architecture, meaning only you and the recipient can read emails, with features like password-protected messages and self-destructing emails. While Proton Mail is known for its comprehensive ecosystem (VPN, storage) and Swiss jurisdiction, Tuta offers free, quantum-safe encryption and a focus on privacy. For professionals, Hushmail is HIPAA-compliant, and Fastmail offers strong Australian data sovereignty for businesses.
Email security concerns
These threats can compromise sensitive information, such as passwords, credit card numbers, and other personal details, making it essential for individuals and organisations to take email security seriously.
Email compromise often starts with subtle warning signs like messages you didn't send, login alerts you don't recognize, or strange reports from coworkers and contacts. Because attackers move quickly once they gain access, spotting these red flags early is critical to protecting your data, reputation, and organization.
Tips for Recognizing a Malware Email
Impersonate you: In some cases, scammers will use your email address to contact friends and family members. They'll pose as you to send money for a fake emergency. Uncover other personal data: If your bills and receipts go to your inbox, scammers can piece together your address and spending habits.
The "3 Email Rule" is a productivity guideline suggesting that if an email conversation goes back and forth more than three times (three messages sent and received), it's time to switch to a more direct communication method, like a phone call, video chat, or in-person meeting, to avoid miscommunication, clarify issues, and save time. This rule helps resolve complex discussions efficiently by leveraging richer communication channels that include tone and non-verbal cues, which emails lack.
Poor Wi-Fi or a sync problem may prevent new emails from showing up. Everything is working on the sender's side, but on your device, it looks like nothing is coming through. Solution: Refresh your inbox, try accessing your account on another device or browser, and update your mail app.
The Rule of 5 is straightforward: it's the practice of limiting your email actions to just five key moves: delete, delegate, respond, defer, or do.
There isn't one single "most hacked" provider, but Gmail (Google) and Microsoft Outlook are the most targeted due to their massive user bases, making them prime targets for attackers, with reports showing massive increases in attempts against Gmail and Microsoft being the most impersonated brand in phishing. While these giants face high attack volumes, their security is robust; services like Proton Mail and Tuta (Tutanota) are considered more secure for privacy due to features like zero-access encryption, though they are less frequently targeted because of smaller user bases.
There are email providers that offer email encryption. For example, ProtonMail is completely encrypted, and you can set it so that the email is no longer available after a certain time period. Other free encrypted email services include Tutanota and Mailfence.
Both Outlook and Google deliver enterprise-grade security with two-factor authentication, 99.9% spam blocking accuracy, and fully encrypted connections. Gmail distinguishes itself with exclusive features like last account activity tracking and AI-powered threat detection that adapts to emerging security patterns.
Your Gmail activity might be suspicious if:
Email privacy and security start when you first create the email account.
Go offline and scan for malware
Use anti-malware software to check for any viruses on your device. Take appropriate steps to get rid of it, if it's discovered (scroll down for specific steps). If you suspect your devices have been compromised, stop online shopping or banking until you're in the clear.
Blocked Mailbox or Access Issues
Anything that obstructs the mailbox—like parked cars, snow piles, or other obstacles—can lead to missed deliveries. If your mailbox is inaccessible, USPS may hold onto your mail until the access problem is resolved. Solution: Ensure that nothing is blocking your mailbox.
To see if your firewall is blocking a website, app, or port on Windows, go to Windows Firewall > Advanced Settings and check your Outbound rules. On a Mac, click the Apple icon > System Settings > Network > Firewall > Options to check your firewall settings.
But sometimes, users face common issues with emails. These include messages not being delivered, running out of space in your mailbox, emails getting marked as spam, or not being able to attach files.
The "+1 email trick," also known as plus addressing, lets you create infinite email variations for a single Gmail account by adding +anything after your username (e.g., [email protected]), with all emails still arriving in your main inbox. This is great for filtering spam, identifying data sellers (if [email protected] gets spam, you know Facebook shared your info), and organizing subscriptions without needing new accounts.
For effective communication, remember the 5 C's of communication: clear, cohesive, complete, concise, and concrete. Be Clear about your message, be Cohesive by staying on-topic, Complete your idea with supporting content, be Concise by eliminating unnecessary words, be Concrete by using precise words.
Use the appropriate level of formality
For instance, begin with “Dear _____”, use “please” and “thank you” where necessary, and always end your email with the appropriate phrase, “Kind regards”, “Thank you”, “Sincerely” and so on.
Why It's Called “Brushing” The term comes from e-commerce, where sellers would “brush up” their sales by generating fake orders and reviews. Today, brushing scams are a global issue affecting major online marketplaces.
Common scammer phrases create urgency, promise rewards, threaten consequences, or build fake intimacy, using language like "Act Now," "You've Won," "Problem with your account," "Soulmate," "If you love me," "Would you kindly," or "Don't tell anyone" to manipulate victims into revealing personal info or sending money. They often use awkward grammar, unusual spelling (like "British English"), and demand secrecy to bypass critical thinking and isolate you.