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Practical insights on email deliverability, security, and infrastructure — based on real findings from working with 450+ organizations.

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Email Deliverability

SendGrid 2FA Issue Locks Access to 50+ Client Accounts

June 20, 2025

2FA verification failures locked multiple accounts, halting business operations for over 36 hours.

Email Deliverability

Is External Destination Verification Required for DMARC Reporting?

June 19, 2025

EDV records appear optional since DMARC reports often send successfully without explicit external destination verification.

Email Security

How to Protect Your Domain and Email When Switching SaaS Providers

June 19, 2025

Always export your DNS zone to prevent service disruptions and protect email and domain security.

Email Deliverability

DMARC p=reject Reduces Spoofing, But Doesn’t Guarantee Full Protection

June 18, 2025

Even with p=reject, some email servers may still accept spoofed messages, creating residual risks.

Email Deliverability

When Gradual Sending Doesn’t Prevent Spam Folder Placement

June 18, 2025

Even with careful guidance, emails can still land in spam without proper authentication and monitoring.

Email Security

Mailchimp Auto-DKIM Can Overwrite Strict DMARC Policies

June 11, 2025

Mailchimp’s auto-DKIM setup may replace strict DMARC, exposing domains to spoofing and phishing attacks.

Email Security

CRM Email Rejections Caused by Missing DKIM and DMARC Settings

June 11, 2025

Emails bounced in CRM due to missing DKIM signatures and strict DMARC reject policy.

Email Deliverability

Why Email Templates Must Stay Under 102KB

May 16, 2025

Oversized email templates risk clipping, broken tracking, compliance issues, and reduced inbox placement across providers.

Email Security

Suspicious Google Calendar Emails Trigger DMARC Failures

May 15, 2025

Attackers exploited Google Calendar to send phishing emails, causing DMARC failures for Yahoo recipients.

Email Deliverability

Namecheap DNS TTL Limit Creates Microsoft DKIM Challenges

May 14, 2025

Namecheap’s TTL limit affects DKIM validation, risking spam filtering and degraded email deliverability.

Email Deliverability

Google/Yahoo Email Regulations: Prepare DKIM, SPF, and DMARC Compliance

May 2, 2025

Non-compliant emails face gradual rejection; ensure DKIM, SPF, and DMARC are properly configured.

Email Deliverability

Microsoft DMARC Reports Expose Recipient Domains – A Critical Risk

April 29, 2025

Microsoft DMARC aggregate reports reveal recipient domains, creating insider threats and increasing phishing risk.