Table of Contents
⚡ Quick Summary
Email deliverability depends on technical setup (SPF, DKIM, DMARC records), sending behavior (segmentation and frequency), and list hygiene (monthly verification and inactive removal). Warm up new domains over 2-4 weeks, clean your list monthly, and only email engaged subscribers to maintain 95%+ inbox placement.🎯 Key Takeaways
- ✔Set up SPF, DKIM, and DMARC DNS records for your domain before sending any marketing emails to establish technical credibility.
- ✔Segment your list into active (30-day), warm (90-day), and cold groups and only send promotional emails to engaged segments.
- ✔Clean your email list monthly using verification tools like Neverbounce to maintain a bounce rate below 2%.
- ✔Warm up new domains or IPs gradually over 2 to 4 weeks starting with 10 to 15 emails per day before sending campaigns.
- ✔Monitor your sender reputation weekly by tracking open rates (target 35%+), bounce rates (under 2%), and spam complaints (under 0.1%).
- ✔Use Mail-Tester.com to score test emails before major campaigns and fix any issues before hitting send.
- ✔Consider using a subdomain for marketing emails to protect your primary domain's reputation from campaign-related issues.
🔍 In-Depth Guide
Setting Up SPF, DKIM, and DMARC Correctly
Log into your domain registrar's DNS management panel. For SPF, add a TXT record with the value 'v=spf1 include:_spf.google.com include:your-esp-domain ~all' replacing the include statements with your actual email service providers. For DKIM, go to your email platform's authentication settings, generate a DKIM key, and add the provided CNAME or TXT record to your DNS. For DMARC, add a TXT record with the name _dmarc and value 'v=DMARC1; p=none; rua=mailto:your@email.com' to start in monitoring mode. Use MXToolbox.com to verify all three records are configured correctly. I check mine weekly. Common mistakes include having multiple SPF records, which breaks authentication, and forgetting to update SPF when you add a new email tool. After 30 days of DMARC monitoring with no issues, upgrade the policy from p=none to p=quarantine for stronger protection.Managing Sender Reputation Through Smart Segmentation
Your sender reputation is a score that mailbox providers assign based on how recipients interact with your emails. High open rates, low bounces, and minimal spam complaints build a strong reputation. I track these metrics weekly in ConvertKit. My current benchmarks are 42% average open rate, 0.8% bounce rate, and 0.1% spam complaint rate. To maintain these numbers, I segment every campaign. Promotional emails go to subscribers who opened at least one email in the last 30 days. Re-engagement campaigns target the 30 to 90 day inactive segment with a specific subject line asking if they still want to hear from me. Anyone who does not engage after 3 re-engagement attempts gets removed. This aggressive pruning keeps my list healthy. I would rather have 4,000 engaged subscribers than 10,000 where half never open anything.Domain Warm-Up Process for New Senders
If you are sending from a new domain or switching email providers, warm-up is mandatory. I use Instantly.ai which automates the process for $30 per month. The warm-up works by sending emails between real accounts in their network, generating opens, replies, and positive engagement signals that build your sender reputation with Gmail, Outlook, and Yahoo. Start with 10 to 15 emails per day in week one, increase to 30 to 50 in week two, 75 to 100 in week three, and your full volume by week four. Never skip this step. When I set up a new domain for my Dubai consulting practice, I spent 3 weeks warming it up before sending a single campaign. The first campaign hit 96% inbox placement. A colleague who skipped warm-up on his new domain had 60% of his first campaign land in spam and it took 6 weeks to recover his reputation.💡 Recommended Resources
📚 Article Summary
Email deliverability is the difference between your emails landing in the inbox and disappearing into spam. I learned this the hard way when I launched my first course on sawankr.com and 38% of my promotional emails were going to spam folders. After spending three months fixing every technical and behavioral factor, I got my inbox placement rate above 95%. This post covers everything I did and what you need to do to fix yours.The technical foundation starts with three DNS records: SPF, DKIM, and DMARC. SPF tells email servers which IP addresses are authorized to send email on behalf of your domain. DKIM adds a cryptographic signature to each email so receivers can verify it was not tampered with. DMARC ties SPF and DKIM together and tells receiving servers what to do with emails that fail authentication. If you have not set up all three, your emails are more likely to be flagged as suspicious.I set up my DNS records through Hostinger where I host sawankr.com. The process took about 20 minutes. SPF is a TXT record that lists your email service providers. DKIM requires generating a key pair through your email platform, whether that is ConvertKit, Mailchimp, or GoHighLevel, and adding the public key as a CNAME or TXT record. DMARC starts as a monitoring-only policy with p=none so you can see reports before enforcing stricter rules.Beyond technical setup, your sending behavior matters just as much. Email providers like Gmail and Outlook track your sender reputation based on open rates, bounce rates, spam complaints, and engagement patterns. If you are blasting your entire list with every email, your reputation will suffer. I segment my list of 6,800 subscribers into active (opened an email in the last 30 days), warm (opened in the last 90 days), and cold (no opens in 90+ days). My promotional emails only go to active and warm segments.List hygiene is something most people ignore until deliverability tanks. I run a monthly cleanup using Neverbounce to verify all email addresses on my list. This catches invalid addresses, spam traps, and disposable emails before they damage my sender score. A clean list with a 2% bounce rate performs dramatically better than a bloated list with 8% bounces. I removed 1,200 invalid addresses in my first cleanup and saw an immediate 12% improvement in inbox placement.Warming up a new domain or IP is critical if you are starting fresh. I used Instantly.ai’s warm-up feature when I added a new sending domain for my Dubai consulting emails. The process gradually increases your daily send volume over 2 to 4 weeks, starting with 10 emails per day and scaling to 100+. Skipping warm-up is the number one reason new senders land in spam immediately.
❓ Frequently Asked Questions
Written by
Sawan Kumar
I'm Sawan Kumar — I started my journey as a Chartered Accountant and evolved into a Techpreneur, Coach, and creator of the MADE EASY™ Framework.
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