Email Deliverability for Real Estate Agents: Why Your Vendor Reports Land in Spam
There's a special kind of frustration in spending an hour on a beautifully formatted vendor update, hitting send, and finding out three weeks later it's been sitting in a spam folder the whole time — the vendor thinks you've gone quiet, and you think they're ignoring you. Deliverability is invisible until it's the reason a relationship goes cold. 💖
What most agents get wrong
- Assuming spam filtering is about content alone — a perfectly written email from an unauthenticated domain still gets binned.
- Never checking whether SPF, DKIM and DMARC are even set up — most agencies inherited their email setup years ago and nobody's checked since.
- Emailing a list that's never been cleaned — old vendors, dead addresses and people who've never opened in a year all quietly damage your sending reputation.
- Writing subject lines built for urgency, not delivery — "URGENT: Your Weekly Update" reads like a scam attempt to most filters.
- Blaming the CRM's email tool — the platform matters far less than the authentication and list health behind it.
The plain-English deliverability checklist
Three agents, three deliverability problems
How authentication actually works, briefly
Think of SPF as a guest list ("these servers are allowed to send mail as me"), DKIM as a wax seal ("this message genuinely came from me and wasn't altered"), and DMARC as the instruction for what to do if either check fails ("quarantine it" or "reject it"). Most email platforms and CRMs will generate the exact DNS records you need to add — you just need someone with access to your domain's DNS settings to paste them in, once. It typically takes under an hour and needs zero ongoing maintenance.
Mistakes that quietly sink your deliverability
- Buying or scraping a contact list — spam complaints from people who never opted in do lasting damage to your domain's reputation.
- Attaching large PDF reports instead of linking to them — big attachments are a common spam trigger, and a link to a hosted report performs better anyway.
- Never checking a spam-testing tool before a big send — free checkers will flag authentication and content issues before your vendors ever see the problem.
- Ignoring unsubscribes — forcing unwanted mail on people who've opted out invites spam complaints, which hurt everyone else's inbox placement too.
Frequently asked questions
How do I check if SPF, DKIM and DMARC are set up for my domain?
Free online DNS lookup tools will show you in seconds — search for an "SPF/DKIM/DMARC checker," enter your domain, and it'll tell you what's published (or missing). If you're unsure what you're looking at, your CRM's support team or web developer can read the results for you.
Will fixing this guarantee our emails never go to spam again?
No — and it's worth being upfront about that trade-off. Authentication and list hygiene remove the technical reasons for filtering, but individual inbox providers still make their own calls based on engagement and content, so the odd email can still slip through. It gets you from "regularly filtered" to "occasionally missed," which is a real improvement, not a guarantee.
How often should we clean our email list?
Every quarter is a reasonable rhythm for most agencies — remove hard bounces immediately as they happen, and review non-openers every few months rather than letting years pass between clean-ups.
Does sending from a personal email address always hurt deliverability?
Not always for one-to-one emails, but it becomes a problem the moment you're mail-merging or mass-CC'ing — that pattern looks like spam to filters regardless of how genuine the content is. Move recurring vendor or database sends to a proper platform.
Keep reading 🤍
I help Gold Coast and Brisbane businesses grow with branding, websites and marketing that actually works.
Work with me ✦