KlaviyoKlaviyo is the autonomous CRM for B2C brands, built to turn what you know about your customers into real growth.
vs
MailgunTransactional Email API Service For Developers
Comparison · Email Marketing · weekly run Nov 2
Klaviyo vs Mailgun
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Klaviyo is the stronger AI pick in Email Marketing: it has a visibility score of 24 versus 0.9 for Mailgun.
Choose Klaviyo if…
- You want the brand AI engines rank higher (24 vs 0.9)
- AI answers describe it more positively (55% vs 0% positive)
- You need ISO 27001 or ISO 27017 coverage
- You prefer a larger, established vendor (1,001–5,000 employees)
Choose Mailgun if…
- You need ISO/IEC 27001 or ISO 27701 or GDPR compliant or HIPAA compliant or PCI-compliant SAQ-A merchant coverage
- recommended for sending larger volumes programmatically
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Klaviyo | Mailgun |
|---|---|---|
| Visibility score | 24% | 0.9% |
| Change vs last week | New | New |
| Rank in Email Marketing | #6 | #36 |
| Share of voice | 6.4% | 0.2% |
| Mentions this run | 33 | 1 |
| Positive in AI answers | 55% | 0% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Klaviyo 0pp · Mailgun 0pp over 0 weekly runs.
Engine by engine
Klaviyo leads on 3 of 3 engines
ChatGPT
AI Mode
Perplexity
KlaviyoMailgun
Head to head in AI answers
0 engine answers name both brands
0Klaviyo ranked higher
0Mailgun ranked higher
Features, pricing & fit
| Dimension | Klaviyo | Mailgun |
|---|---|---|
| Pricing model | Usage-based | Usage-based |
| Entry price | Contact sales | Free; paid from $15 / mo |
| Free plan | Yes | Yes |
| Deployment | — | Cloud, hosted in US and EU regions |
| Integrations | 400+ | — |
| Compliance | SOC 2 Type II, ISO 27001, ISO 27017 | SOC 2 Type II, ISO/IEC 27001, ISO 27701, GDPR compliant, HIPAA compliant, PCI-compliant SAQ-A merchant |
| Support | Email support, Help Center and documentation, Klaviyo Academy courses, Klaviyo Community | Knowledge Center, Documentation, Ticket support, Chat support on higher plans |
| Founded | 2012 | 2010 |
| Headquarters | Boston, MA, United States | — |
| Employees | 1,001–5,000 | 201–500 |
| Funding | IPO | Growth investment (Thoma Bravo) · $51M raised |
| Best for | Ecommerce and direct-to-consumer brands that want email, SMS and customer data in one platform, from small businesses starting on the free plan to large enterprises. | Developers and engineering teams that need to send transactional and marketing email through an API |
Plans side by side
Mailgun
Free$0month
Basic$15month (10,000 emails included)
Foundation$35month (50,000 emails included)
Scale$90month (100,000 emails included)
EnterpriseCustomcustom
Pros and cons
Themes from the AI answers that mention each brand
Klaviyo
- Leading choice for ecommerce, Shopify and online stores
- Deep data-driven behavioral automation and predictive analytics
- Email and SMS marketing for ecommerce brands
- Free to start with no credit card required
- Bills monthly only, with no standard annual billing discount
Mailgun
- recommended for sending larger volumes programmatically
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Klaviyo vs Mailgun”, https://slateindex.ai/compare/klaviyo-vs-mailgun, data of Nov 2, 2026. Licence: CC BY 4.0.