This security feature verifies that emails actually come from who they claim to be from. It checks technical authentication markers (like SPF, DKIM and DMARC) to detect spoofed or fraudulent emails that pretend to be from legitimate senders. When an email fails these checks, BlueMail warns you that the sender may not be authentic.
This helps protect you from phishing attacks where scammers impersonate trusted companies or contacts.
How to Find
- Open BlueMail
- Tap the menu icon
- Tap Settings
- Tap Privacy & Security
- Find Email Authentication Check under Spam & Phishing
How to Use
- Navigate to Settings > Privacy & Security
- Look for the Spam & Phishing section
- Locate the Email Authentication Check option
- Tap the switch to enable or disable the feature
- On: Emails are checked for authentication
- Off: Authentication checks are disabled
Options Explained
| Option | Behavior |
|---|---|
| On (Default) | BlueMail verifies sender authentication and warns you about suspicious emails |
| Off | No authentication verification is performed |
Tips
- Keep this enabled for better protection against phishing and spoofed emails
- If you see an authentication warning, be cautious about tapping links or downloading attachments
- Legitimate emails sometimes fail authentication due to forwarding or mailing lists
- This setting syncs across your devices as part of your security preferences
- Works best in combination with other spam and phishing protection features
Troubleshooting
I am seeing warnings on legitimate emails
- Some email forwarding services and mailing lists can cause authentication failures
- If you trust the sender, you can proceed despite the warning
- Emails from older or misconfigured mail servers may trigger warnings
Suspicious emails are not being flagged
- Not all spam uses spoofed sender addresses
- Some sophisticated phishing emails pass authentication checks
- Use multiple security features together for better protection
- Report suspicious emails as spam to improve filtering
The setting keeps changing
- This setting syncs across devices. Check your other devices
- Security profile changes may adjust this setting automatically
