Question 1

Why are my emails going to spam?

Accepted Answer

Emails land in spam when your domain is missing or misconfigured email authentication records: SPF, DKIM, and DMARC. SPF tells receiving servers which IPs are allowed to send on your behalf, DKIM adds a cryptographic signature to prove authenticity, and DMARC tells servers what to do if either check fails. InboxShield checks all three instantly and shows you exactly what to fix.

Question 2

What is SPF and do I need it?

Accepted Answer

SPF (Sender Policy Framework) is a DNS record that lists which mail servers are authorised to send email for your domain. Without SPF, anyone can send email pretending to be you, and receiving servers are likely to mark your emails as spam. Every domain that sends email should have an SPF record.

Question 3

What is DKIM?

Accepted Answer

DKIM (DomainKeys Identified Mail) adds a digital signature to every email you send. Receiving servers check this signature against a public key in your DNS to verify the email was not tampered with in transit. DKIM significantly improves deliverability and is required by Gmail and Yahoo for bulk senders.

Question 4

What is DMARC and why does it matter?

Accepted Answer

DMARC (Domain-based Message Authentication, Reporting and Conformance) is a policy record in your DNS that tells receiving mail servers what to do when an email fails SPF or DKIM checks — either do nothing (none), quarantine to spam, or reject outright. Without DMARC, your domain is vulnerable to email spoofing and phishing attacks.

Question 5

How do I check if my email deliverability is set up correctly?

Accepted Answer

Enter your domain into InboxShield and it will instantly check your SPF, DKIM, DMARC, BIMI, and MTA-STS records, flag any problems, and give you step-by-step instructions to fix them. The tool is free and requires no account.

Question 6

What is BIMI?

Accepted Answer

BIMI (Brand Indicators for Message Identification) is a DNS record that displays your brand logo in the inbox of supporting email clients like Gmail and Apple Mail. It requires a valid DMARC policy and a verified logo file. BIMI increases brand recognition and email open rates.