Inbox placement (also known as email deliverability) is key to boosting open rates, engagement, and overall ROI. In this guide, we’ll walk you through practical steps to increase your email inboxing rates using SendX and general best practices.
Before You Begin
Before implementing the steps below, ensure you have:
Access to your SendX account
A clean email list with verified contacts
A custom domain to send emails from
Basic understanding of email authentication (CNAME, DKIM, DMARC)
Step-by-Step Instructions
1. Use a Double Opt-In List
Using double opt-in helps ensure the authenticity of your email subscribers. When users confirm their email address by clicking a verification link, it significantly reduces:
Hard bounces
Spam complaints
Low engagement rates
Avoid using purchased or scraped email lists, as they often lead to spam reports and damage your sender reputation.
2. Improve Your Domain Reputation
Positive engagement with your domain (opens, clicks, replies) signals to spam filters that your emails are trustworthy.
To boost domain reputation:
Ask your team to interact with your emails.
Reply to sent emails to show engagement.
Use warm-up tools like AmpleMarket or InboxAlly.
If using a new domain, ramp up sending volume gradually.
3. Clean Your Email List Regularly
A clean email list reduces bounce rates and improves inboxing. Use email verification tools like SendVerify to:
Remove invalid or inactive addresses
Improve deliverability automatically before each campaign
4. Set the ‘From’ and ‘Reply-To’ Fields Properly
Ensure your email campaigns have a clearly defined:
From address
Reply-To address
This builds trust and reduces the chance of your emails being flagged as spam.
5. Optimize Your Subject Lines
Subject lines play a big role in determining inbox placement.
Avoid:
Spammy words like "Free", "100% off", "Guarantee", "Chance", "Password", "$$$"
ALL CAPS or excessive punctuation (e.g., “BUY NOW!!!”)
Instead:
Keep subject lines clear, relevant, and value-driven
6. Watch Your Email Content
Spam filters scan your content. Ensure your emails:
Use proper grammar and spelling (use tools like Grammarly)
Link only to reputable domains
Avoid URL shorteners
Keep emails concise—don’t send novel-length content
Maintain a balanced text-to-image ratio
7. Include a Visible Unsubscribe Link
SendX automatically adds an unsubscribe link to your campaigns. You can customize this via:
Settings > Setup > Unsubscribe
Providing an easy opt-out option prevents recipients from marking your emails as spam.
8. Authenticate Your Emails
Set up the following authentication methods:
Cname
DKIM
DMARC
These protocols help email providers verify that your emails are legitimate, reducing the chance of them being blocked or sent to spam.
9. Get a Dedicated IP (Optional but Recommended)
With a dedicated IP, you gain full control over your sender reputation.
Benefits of a dedicated IP:
Isolates your email reputation from other senders
Provides consistent deliverability
Helps build long-term domain trust
To request a dedicated IP, contact the SendX support team. When switching to a dedicated IP, warm it up gradually by sending smaller campaigns first and increasing volume over time.
Tips & Best Practices
✅ Never use purchased or scraped lists
📥 Warm up your domain and IP before scaling campaigns
🧹 Clean your email list at least once a month
🔍 A/B test subject lines to find the ones that perform best
💬 Encourage replies to increase domain engagement
📈 Monitor bounce, open, and click rates regularly
🔗 Avoid suspicious-looking links or shortened URLs
By following these steps, you’ll significantly improve your email inboxing rate and ensure your messages reach your audience’s primary inbox. Consistency, quality, and authenticity are the keys to long-term email marketing success.