Maximize your email deliverability in Klaviyo: The 7 essential pillars
Email deliverability is the cornerstone of any successful marketing strategy in Klaviyo.
Without it, even the most creative and persuasive campaigns will fail before they even reach your audience.
According to recent studies, almost 20% of marketing emails never reach the primary inbox,
causing a massive loss of business opportunities and customer engagement.
This guide reveals the 7 essential pillars to maximize your deliverability rate
and ensure your messages effectively reach your recipients.
Why is deliverability crucial for your Klaviyo strategy?
- Low deliverability can reduce your ROI by 30% to 50%.
- A 5% improvement in inbox placement can increase your email revenue by 10% to 20%.
- Unresolved issues degrade your sender reputation in the long term.
- Klaviyo provides powerful tools, but their effectiveness relies on rigorous implementation.
1. Set up a robust sending infrastructure in Klaviyo
Full domain authentication
Proper domain authentication is essential to establish trust with email providers.
-
SPF: Verifies that the servers sending your emails are authorized.
Go to Account Settings > Domains and Emails in Klaviyo. - DKIM: Adds a digital signature ensuring the authenticity of the message.
- DMARC: Defines how to handle emails that fail SPF or DKIM checks.Here is a video on this topic
Dedicated sending domain
Using a dedicated subdomain improves your sender reputation.
Example: If your domain is yourcompany.com, create a subdomain email.yourcompany.com for your Klaviyo sends.
2. Adopt ethical and effective list acquisition practices
Preferred acquisition sources
- Double opt-in: Reduces erroneous subscriptions by 80% and improves engagement by 27%.
- Contextual forms: Linked to viewed content for greater relevance.
- Loyalty and physical stores: Engagement rate 24% higher.
Practices to absolutely avoid
- ❌ List purchasing: Increases complaint rate by 40x.
- ❌ Pre-checked boxes: Practice non-compliant with GDPR.
- ❌ Mass import without verification: High risk of spam traps.
3. Implement a progressive warm-up strategy
4-Phase Warm-up Plan
- Phase 1 (Days 1-7): Send to your most engaged subscribers.
- Phase 2 (Days 8-21): Increase volume by 20% with each send.
- Phase 3 (Days 22-45): Integrate less recent subscribers.
- Phase 4 (Days 46+): Stabilize your normal volume.
4. Implement a deliverability monitoring system
Key indicators to monitor
- ✅ Inbox placement rate (Target: >90%).
- ✅ Bounce rate (Keep below 2%).
- ✅ Open rate (Aim for >15%).
- ✅ Spam complaints (Below 0.1%).
5. Optimize your emails with rigorous anti-spam tests
Elements to check before sending
- 📩 Avoid spam words: "Free", "Promotion", "Urgent".
- 🖼 Text/Image Ratio: Ideal 60/40.
- 🔗 Links: Avoid shortened URLs.
- 📧 Preview tests: Check display on Gmail, Outlook, Apple Mail.
6. Apply strategic sending practices
Frequency and segmentation
- Engaged subscribers: Frequent sending, exclusive content.
- Moderate subscribers: Moderate sending, added value.
- Inactive subscribers: Re-engagement campaigns.
7. Maintain rigorous list hygiene
Regular cleaning plan
- 📅 Daily: Automatic deletion of hard bounces.
- 📅 Monthly: Cleaning of inactive addresses.
- 📅 Quarterly: Re-engagement campaign.
Conclusion: make deliverability a strategic asset
Deliverability optimization is not optional, it is a real growth lever.
Apply these strategies today to see a rapid and measurable improvement in your Klaviyo campaigns.
Better deliverability = more engagement, more conversions, more revenue!
