How to Avoid the Junk Folder & Reach the Inbox
Landing in the primary inbox isn't luck—it's science. Follow this guide to optimize your technical setup and email content for maximum deliverability.
The Technical Foundation
Modern mail filters like Gmail and Outlook require proof that you are who you say you are. Without these three records, your emails are likely to be flagged as "Suspicious."
- 1
SPF (Sender Policy Framework)
Specifies which IP addresses are authorized to send mail on behalf of your domain.
- 2
DKIM (DomainKeys Identified Mail)
Adds a digital signature to your emails, ensuring the content hasn't been tampered with.
- 3
DMARC (Domain-based Message Authentication)
Tells receiving servers what to do if SPF or DKIM checks fail (e.g., quarantine or reject).
The "Anti-Spam" Content Check
Professional Branding
Avoid generic subject lines like "Reset Password." AI filters favor clear, specific branding like "Password reset for your Habitualist account."
Keep HTML Simple
Excessive tracking pixels, massive images, or complex CSS structures can trigger Gmail's AI spam sensors. Stick to clean, readable HTML.
The One-Link Rule
Transactional emails should have one clear purpose. Avoid adding marketing links or secondary CTAs in the footer of a security-related email.
The Secret Weapon: List-Unsubscribe
Even for transactional mail, modern filters look for the List-Unsubscribe header. While technically for newsletters, its presence signals to ISPs that you are a high-quality, RFC-compliant sender.
Industry Expert Advice
Warm up your IP
Don't blast thousands of emails from a new domain on day one. Start slow and gradually increase volume to build a "Sender Reputation" with major ISPs.
Monitor Engagement
High open rates and low "Mark as Spam" clicks are the ultimate signals. If users don't open your mail, Gmail will eventually move you to the Promotions or Junk folder.
Deliverability Checklist
Deliverability FAQs
Why shouldn't I "blast" thousands of emails at once?
Spam filters from Gmail and Outlook analyze sending patterns. A sudden "blast" of high-volume mail from a new or low-volume domain is the #1 signal for automated spam. This can cause your domain to be blacklisted globally, destroying your sender reputation instantly.
Why is there a limit of 300 emails per day?
We enforce a standard limit of 300 emails per dayto protect your domain's health. This limit ensures that even if an account is compromised, it cannot be used to send mass spam, which would permanently damage your domain's reputation and deliverability for legitimate business mail.
Stuck with setup?
Don't let technical hurdles stop your business. Our engineers can handle the entire setup for you via WhatsApp for free.
