An ecommerce-focused email and SMS marketing platform with deep Shopify and BigCommerce integration.
⚡ Monitored by EmailExacto IntelligenceKlaviyo is an email service provider (ESP) that handles sending infrastructure, IP reputation management, and delivery feedback for email campaigns, transactional messages, or both. Their sending reputation and your domain's authentication configuration are the two primary drivers of inbox placement when using Klaviyo.
Klaviyo requires domain authentication via DNS records for DKIM and SPF. Without authentication, Klaviyo sends from their subdomain. Klaviyo's sending infrastructure uses dedicated IP pools with automatic warmup for new accounts reaching volume thresholds.
When you send through Klaviyo, messages leave via their SMTP servers or API. The receiving server sees Klaviyo's sending IPs in the Received headers. For your domain to pass DMARC, you must configure Klaviyo's DKIM keys and SPF include: in your DNS. Without this, email sent through Klaviyo fails authentication for your domain.
Klaviyo's Deliverability Hub shows Gmail Postmaster data, engagement benchmarks, and list health metrics. They provide detailed suppression management and segment-level analytics. Klaviyo automatically handles bounce and complaint suppression.
Your ESP affects deliverability through their shared IP pool quality, feedback loops and bounce handling, and ease of authentication configuration. Klaviyo's deliverability is strong for engaged ecommerce lists. Domain authentication is essential to align Klaviyo sends with your domain's DMARC policy.
Regardless of ESP, the fundamentals are yours to control: domain authentication, list hygiene, engagement rates, and complaint rates have more long-term deliverability impact than the ESP choice itself.
EmailExacto Intelligence monitors your sending domain independently of your ESP — giving you visibility into authentication, blacklist status, and inbox placement regardless of which platform you send through.
✓Complete Klaviyo's domain authentication setup — add DKIM and SPF records.
✓Use Klaviyo's Deliverability Hub to monitor Gmail Postmaster data.
✓Segment by engagement — suppress subscribers with no opens in 90+ days.
✓Set up sunset flows to re-engage or suppress inactive subscribers.
✓Monitor unsubscribe rates per segment — spikes indicate relevance or frequency issues.
✓Set DMARC on your sending domain before expecting Klaviyo email to align.
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