You spent hours researching a prospective client, double-checked your pricing, and crafted the perfect proposal. You hit send. A week goes by, then two. Silence.
Finally, you send a gentle follow-up message on WhatsApp. The prospect replies: "Oh, I never saw your email. Let me check my spam folder... Ah, yes, there it is!"
By then, they’ve already hired your competitor. This is the silent killer of modern businesses. In 2024, Gmail and Yahoo implemented strict email security policies. If your custom business domain (you@yourcompany.com) isn't properly authenticated, your emails are statistically destined to land in junk folders. Here is the checklist you need to fix it.
Why Generic Domains Harm Your Deliverability
If you're still sending business emails from yourname@gmail.com, you face two massive hurdles: unprofessional branding and low mail client trust. However, simply buying a domain like yourcompany.com and linking it to a mail host isn't enough. In fact, raw custom domains often have worse deliverability than Gmail until they are authenticated.
The Three Pillars of Email Authentication
To establish domain authority, you must configure three primary TXT records in your domain's DNS manager:
1. SPF (Sender Policy Framework)
Think of SPF as an authorized guest list. It is a single line of text in your DNS records that tells receiving mail servers exactly which IP addresses and hosting providers are permitted to send emails on behalf of your domain.
If a server receives an email claiming to be from you@yourcompany.com but originating from a server not listed in your SPF record, it flags it as suspicious.
2. DKIM (DomainKeys Identified Mail)
DKIM adds a cryptographic digital signature to every outgoing email. This signature is verified using a public key published in your DNS manager. It proves two things to receiving servers: that the email actually came from your domain, and that the content wasn't altered in transit.
3. DMARC (Domain-based Message Authentication)
DMARC is the policy manager. It ties SPF and DKIM together. In your DMARC record, you tell receiving servers exactly what to do if an email fails SPF or DKIM checks. You can set it to do nothing (none), quarantine the email (spam folder), or reject it entirely.
Furthermore, DMARC sends reports back to you, showing you who is sending emails from your domain—allowing you to block spoofers.
Step-by-Step DNS Checklist
- Identify your email host (Google Workspace, Zoho, or Microsoft 365).
- Access your registrar's DNS settings (Namecheap, GoDaddy, etc.).
- Generate and add the SPF TXT record (e.g.,
v=spf1 include:zoho.com ~all). - Generate the DKIM cryptographic key inside your email host admin panel, wait for it to generate, and add it as a TXT record.
- Create a DMARC TXT record (e.g.,
_dmarc.yourdomain.com) setting a policy ofp=quarantineorp=rejectonce you verify reports. - Run a mail deliverability audit using tools like Mail-Tester to verify all green checks.
Taking these technical steps secures your brand identity, protects your clients from spoofing scams, and ensures your critical proposals land directly in client inboxes.