Klaviyo deliverability services
Your Klaviyo sends either reach inboxes or quietly disappear into spam. We audit your sending infrastructure, fix what is broken, and keep your domain reputation clean so every campaign lands where it belongs.
Your reputation is leaking. Most teams don't know until revenue does too.
Without a deliverability audit
- Shared sending IPs accumulating spam complaints from other senders
- Missing or misconfigured DKIM and DMARC allowing spoofing flags
- Stale and unengaged contacts pulling your sender score down every send
- Flows sending to unverified segments triggering Gmail bulk sender rules
- Open rates declining with no visibility into why or where emails are landing
- Revenue reports showing flat email performance blamed on content, not delivery
With proper sending infrastructure
- Dedicated sending domain with clean IP warm-up protecting your reputation
- SPF, DKIM, and DMARC fully configured and verified for all sending domains
- Suppression lists cleaned, list hygiene automated, engagement scoring active
- Flows sending only to engaged segments with sunset policies enforced
- Real-time inbox placement monitoring with alerting on any metric movement
- Email becomes a predictable, attributable revenue channel again
What this costs you
A list of 50,000 subscribers with 82% inbox placement means 9,000 contacts never see your campaigns. At a 2% conversion rate and $45 average order value, that is $8,100 in invisible revenue loss per send.
Your full sending stack under one roof
Every layer of your email infrastructure: domain authentication, list quality, flow segments, and live metrics: reviewed, fixed, and tracked. Here is what that looks like in practice.
Auto-monitoring
Every client gets ongoing inbox placement checks, suppression alerts, and monthly health reports.
Inbox Placement
0
+14.8pp from baseline
Open Rate
0
Industry avg: 21%
Bounce Rate
0.00%
Below 2% threshold
Spam Complaint
0.000%
Below 0.08% threshold
Email Revenue Share
DMARC policy upgraded to reject
Resolved · May 14
1,203 stale addresses suppressed
Resolved · May 12
Unsubscribe rate 0.6% in campaign #47
In review · Segment refinement queued
IP warm-up phase 3 of 4 complete
Resolved · May 8
Sending domain TLS certificate renewed
Resolved · May 5
Every deliverable. Scoped before work starts.
Domain authentication and sending infrastructure
Full SPF, DKIM, and DMARC setup across all sending domains and subdomains. Dedicated sending IP provisioning, warm-up sequencing, and Klaviyo account-level configuration locked to your brand domain.
List hygiene and suppression
Stale addresses removed. Hard bounce suppression enforced. Engagement scoring applied. Sunset policies built into every active flow.
Flow deliverability audit
Every active Klaviyo flow reviewed for segment quality, send timing, suppression gaps, and compliance with Gmail and Yahoo bulk sender rules.
IP warming strategy
Phased warm-up plan for new sending IPs or domains. Volume ramps designed around your list size and mailbox provider ratios to avoid placement drops.
Ongoing monitoring and reporting
Monthly deliverability health report. Real-time alerts on bounce rate, spam complaint rate, and unsubscribe spikes. Klaviyo inbox placement checks across Gmail, Outlook, and Yahoo.
From audit to inbox in under two weeks
We access your Klaviyo account, run the audit, and implement fixes. You review results. Your team stays out of the technical work entirely.
Day 1
Access and baseline
You share read access to Klaviyo. We pull your sending history, domain configuration, list health, and last 90 days of performance data to establish the baseline.
Days 2 to 4
Full deliverability audit
DNS records, sending infrastructure, flow segments, suppression coverage, bounce and complaint patterns: every layer examined and scored with a priority fix list.
Days 5 to 10
Implement and verify
Your DNS is updated, Klaviyo account is reconfigured, lists are cleaned, and flows are updated. We verify each fix against placement test inboxes before marking it complete.
Ongoing
Monitor and report
Monthly health reports, real-time spike alerts, and quarterly placement re-tests keep your sending reputation clean as your list and flow library grows.
Scoped before work starts. Line-by-line pricing. No surprises.
Every project is scoped in a proposal before any work begins. The number below is what you pay: not a starting point for a larger conversation.
Deliverability audit
Fixed-fee. Delivered in 4 business days.
- DNS and authentication review (SPF, DKIM, DMARC)
- Inbox placement test across 3 major providers
- List health score and suppression gap report
- Priority fix list ranked by revenue impact
- 30-minute findings walkthrough call
Value calculation
Fixing one inbox placement issue on a 30K list recovers an avg $3,200 per campaign. The audit pays back in the first send.
Full deliverability service
Most popularScoped to your list size and account complexity.
- Everything in the audit
- DNS and authentication implementation (all records)
- List hygiene, suppression setup, sunset policy
- Flow segment audits and compliance fixes
- IP warm-up plan and send schedule
- 30 days of active monitoring and health reports
Value calculation
Avg 14.8pp inbox placement improvement on a 50K list at 2% conversion rate and $45 average order value = $6,660 recovered per campaign. Service pays back in 1 to 2 sends.
Not sure which is right? Submit your brief and we'll scope the correct option. No commitment to receive a proposal.
What proper deliverability infrastructure delivers
Gameday Gear
Headless EcommerceSports merchandise brand running a headless Shopify storefront: high order volume, highly engaged audience, and no reliable email infrastructure to match.
The problem
Customer behavior and conversion events were inconsistently synced to Klaviyo. Domain authentication was incomplete, resulting in unreliable tracking and limited personalization. Email performance was leaving a major channel underutilized despite strong product demand.
What we delivered
Complete Klaviyo implementation: account configuration, sending infrastructure setup, domain authentication across all sending domains, and custom backend APIs connecting the headless frontend directly with Klaviyo using server-side event tracking.
- Full domain authentication setup and verification
- Custom server-side event API integration
- Ongoing deliverability performance monitoring
The result
of total conversions driven by email
Scope, deliverables, and proof: above the fold
Real reasons people hesitate
Open rates are measured against delivered emails, not sent emails. If 15% of your list is reaching spam folders, those contacts never open, never count, and never show up in your rate. Open rates can look healthy while inbox placement quietly erodes. The audit measures placement directly, not inferred from open data.
SPF and DKIM are necessary but not sufficient. Gmail and Yahoo now require DMARC at enforcement level for bulk senders. Klaviyo also uses its own sending subdomain, which creates a separate authentication path that needs to be configured correctly alongside your root domain setup. Stale sending domain keys, shared IP history, and growing suppression gaps all affect placement independently of your initial authentication setup.
We request Manager-level access to Klaviyo for the duration of the engagement. We also need DNS access or coordination with whoever manages your domain records: usually a 10-minute task with your development team or hosting provider. We document every change before making it, and provide a full change log at close. You can revoke access at any time.
Short-term send volume may be reduced during the IP warm-up phase, which typically lasts 10 to 14 days. During this window, we phase sends to engaged segments first, which protects your reputation and usually improves open rates even mid-warm-up. The first clean campaign after warm-up typically shows the strongest placement performance we measure for that account.
Content and design do affect spam filtering: heavy image-to-text ratios, certain HTML patterns, and specific word clusters all influence placement. Our audit includes a content hygiene review. If we find that content is the primary driver, we document it clearly in the findings and can scope content optimisation as a separate workstream. You will not receive a deliverability fix recommendation when the real issue is copy.
Is this service the right fit?
This service is right for you if
- Your Klaviyo open rates have declined over the past 90 days without a content change
- You are launching a new sending domain or recently migrated your Klaviyo account
- You run a headless storefront with custom event tracking that is not fully synced to Klaviyo
- Email contributes less than 30% of revenue and you want to know why
This service is probably not right if
- You have fewer than 5,000 subscribers: standard Klaviyo defaults handle this range well
- You are not yet sending regular campaigns and do not have 90 days of Klaviyo send history to audit
- Your primary need is email creative or flow strategy rather than infrastructure
Not sure? Tell us your situation and we will be straight with you. Submit your brief.
Your inbox placement fix starts here
Tell us what your team is doing manually that a system should handle. We will review your situation and send a scoped proposal within 3 business days. No commitment. No pitch.
Response within 48 hours · proposal in 3 business days
Line-by-line scoped pricing · no retainer required
47 brands served · Avg 51.2% open rate achieved
Tell us about your Klaviyo setup
Submit brief → call within 48 hours → proposal in 3 days → work starts within 1 week of sign-off
Brief received
We will review your Klaviyo situation and send a scoped proposal within 3 business days. If there is anything we need to clarify first, we will email within 48 hours.