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Email Delivery Guide

Why Is My Email
Going to Spam?

Since February 2024, Google has radically changed how they filter email. If your messages are landing in spam—or vanishing entirely—here's what has changed.

The Short Version

SPF

Sender Policy Framework must be configured and aligned with your sending servers.

DKIM

2048-bit cryptographic signatures are now mandatory for major providers.

DMARC

A basic domain validation and reporting policy must be published in your DNS.

The "Promotions" Trap

Even if you pass all security checks, Gmail might still hide your email in the Promotions tab if it feels too marketing-focused.

Trigger Words"Free", "Discount", or "Limited Time" in subject lines.
Image HeavyHaving an excess of images compared to pure text.
HTML HeavyComplex templates that look like newsletters.
Self-Diagnostic Tool

Interactive Email Health Checker

Step 1 of 3: Primary Email Provider

Where is your business email hosted?

9 Reasons Your Emails Are Going to Spam

01
February 2024 – Present

Google's Stricter Requirements

Gmail now strictly enforces SPF, DKIM (2048-bit keys), and DMARC (minimum p=none) alignment. It also requires valid Reverse DNS (PTR) records. If any of these fail or don't align, Gmail will silently junk or throttle your emails.

02
1,000+ emails/day triggers enforcement

Bulk-Sender Rules at Low Volumes

Even sending 1,000+ emails/day (newsletters, invoices, etc.) now triggers mandatory one-click unsubscribe headers and a low spam rate requirement (<0.3%). Daily throttling occurs immediately if your reputation dips.

03
Just 0.1% can trigger warnings

Reputation Hit Due to Spam Complaints

Gmail is brutal now. A 0.1% complaint rate triggers a warning, and 0.3% causes deliverability to drop. Just 3 complaints per 1,000 emails can get you penalised.

04
Common after migrations

Misconfigured DNS After Hosting Changes

Moved to Vercel, Cloudflare, or a new host? Gmail punishes duplicate SPF records, SPF records that are too long (>10 lookups), DKIM mismatches, or old records left behind after migration.

05
IP reputation matters

Sending from a New IP or Provider

Switching to a new CRM (HubSpot, Zoho, Mailchimp) or sending app notifications from a new IP will tank your reputation until the IP is 'warmed up' with consistent volume.

06
Machine learning tracks behaviour

Gmail AI & Engagement Filtering

It's not just about content anymore. Gmail tracks 'User Engagement'. If people delete your emails without opening them, or don't reply, their AI learns to junk you. It also penalises 'over-optimised' wording and mixed content patterns.

07
Brand trust scoring

Missing or Bad BIMI

While not essential, missing BIMI (Brand Indicators for Message Identification) or a Verified Mark Certificate (VMC) now affects trust scoring during reputation recalculations.

08
Risk with bulk mailers

Shared IP Reputation

If you use a bulk mailer on a shared IP pool, one spammy sender can ruin the reputation for everyone, leading to rate-limiting or junk-folder placement for your legit emails.

09
Authentication mismatches

Alignment Issues with Forwarding

Sending as @yourdomain.com but routing through Gmail SMTP or unaligned services (Vercel/SendGrid) flags you as an 'unauthenticated sender' and downgrades your trust score.

Don't Let Google Block Your Business

We can audit your entire email infrastructure, configure your DNS records, and warm up your domain reputation to ensure your emails land in the inbox.