Why are my emails landing in spam?

The most common causes are misconfigured SPF, DKIM, or DMARC records, or sending from services not authorized for your domain. We review all of these and ship a remediation plan so your messages reach the inbox.

How do I know if my domain is on a blocklist?

Run our free deliverability diagnostic at guanacostech.com/email-troubleshooter. It checks your domain against major blocklists and validates your DNS authentication records in under 30 seconds.

What does DMARC enforcement mean and why does it matter?

DMARC p=reject tells receiving mail servers to block email that fails authentication checks, preventing spoofers from sending mail as your domain. Most teams set DMARC to p=none (monitor) and never advance past it, leaving their domain open to spoofing.

Do you work with clients in North America and LATAM?

Yes. Support, documentation, and meetings are available in English and Spanish, with time zones that overlap cleanly across the US, Canada, and Latin America.

Email deliverability consultancy · since 2018

Is your email landing in spam?

Broken SPF, DKIM, or DMARC. Domain quietly on a blocklist. Workspace misconfigured. We diagnose in 30 seconds and fix in days — not months.

Run free diagnostic Book a 30-min call

★★★★★ 80 projects delivered · 5.0 average rating
EN · ES — NA & LATAM

01 · The cost of broken DNS

Is your email holding you back?

"Your reply never arrived"

A prospect ghosts you. A week later: "I never got your email." It was sitting in their Junk folder the whole time.

The costMonths of silent reputation rot before anyone notices.

Your domain is on a blocklist

Spamhaus, Barracuda, or one of two dozen others. One listing tanks delivery to entire mailbox providers at once.

The costCustomers stop hearing from you — and you find out last.

DMARC stuck on monitor — forever

You set DMARC to p=none years ago and never moved past it. Monitoring watches spoofers; it doesn't stop them.

The costAnyone can send mail as your domain, right now.

02 · Services

Specialized consulting for work that has to be correct.

Flagship service

Your email reaches the inbox.

We rebuild SPF, DKIM, and DMARC from the ground up. Ramp DMARC from monitor-only to enforcement without losing a single legitimate send. Get off blocklists. Set up BIMI when you're ready. Then keep watching, so it stays fixed.

Run free diagnostic

Your admin console, quiet.

Shared drives cleaned up. External sharing under control. Super-admin hygiene. Onboarding and offboarding that actually runs. The kind of work you only notice when it stops being a fire.

Lean infra. AI that ships.

Google Cloud setups for small teams — Cloud Run, Firestore, the IAM you actually need. Gemini, Claude, or open-source models wired into Sheets, Slack, your support inbox. Production-ready, not slides.

03 · Selected work

Quietly decisive outcomes for business-critical systems.

Migration

Zero-drama Workspace transition

Moved a professional services team into Google Workspace with staged cutover planning and verified mailbox data.

Outcome — zero mailbox data loss; users back to work Monday 9am.

Deliverability

Email trust restored

Resolved SPF, DKIM, and DMARC conflicts damaging inbox placement and domain reputation across outbound mail.

Outcome — DMARC p=reject in 6 weeks; bounce rate cut to under 0.5%.

Cloud modernization

Lean deployment architecture

Refined a cloud deployment into a simpler, observable platform with secure service boundaries and automation-ready structure.

Outcome — release cadence weekly; cost down 40% in one quarter.

The work behind the work

We don't sell email security. We give domains their trust back.

04 · What clients say

Trusted by founders running real businesses.

★★★★★

The team knows everything about Workspace.

"Amazing work. The team knows everything about Google Workspace. They are very patient and clear when they explain the process and the steps that need to be taken."

Andreane Gaulin CEO · Speech Point

★★★★★

Fantastic communicators.

"The team was fantastic to work with: knowledgeable, fast, efficient and excellent communicators."

Peta Williams CEO · Sheldrake Williams Enterprises

★★★★★

They double-checked everything.

"Happy with how the team handled this task. They split my GSuite accounts as requested and ensured everything transferred without hiccups. They took the time to explain the process and answer every question along the way."

Waithira Mwangi CEO · Ithira

★★★★★

Expertise and attention to detail.

"The team's proficiency in managing email systems was evident from the beginning. They approached the task with a level of expertise and attention to detail that was truly impressive — every part of the process was in good hands."

Jeremy Pelle CEO · Phoenix Prime Security

80 Projects shipped

5.0 Average rating

7 yrs Shipping since 2018

EN · ES NA & LATAM

Want to see if your domain is broken?

Run the free deliverability check. Two seconds to paste your domain, thirty seconds to know what's wrong.

Run free diagnostic Or book a 30-min call

info@guanacostech.com · Replies within one business day

Is your email landing in spam?

"Your reply never arrived"

Your domain is on a blocklist

DMARC stuck on monitor — forever

Your email reaches the inbox.

Your admin console, quiet.

Lean infra. AI that ships.

Zero-drama Workspace transition

Email trust restored

Lean deployment architecture

The team knows everything about Workspace.

Fantastic communicators.

They double-checked everything.

Expertise and attention to detail.

Want to see if your domain is broken?

Message received.