Mailkit
Mailkit is a Prague-based email marketing automation platform that operates its own proprietary email infrastructure to deliver, automate, segment, and personalize email and SMS campaigns for enterprise and mid-market clients across e-commerce, financial services, and retail.
- Company typePrivate
- Founded2006
- HeadquartersPrague, Czechia
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What Mailkit does
Mailkit s.r.o. is a Prague-based, privately held email marketing automation platform founded in 2001 that owns and operates its own proprietary email infrastructure rather than relying on third-party delivery providers such as SparkPost, Mailgun, or Sendgrid. The platform provides email and SMS campaign management with drag-and-drop campaign creation across 328 templates, dynamic content personalization, AMP support, A/B testing, segmentation, and multi-language capabilities. Differentiated proprietary capabilities include a Bot Detection system (implemented circa 2018) that excludes non-human interactions from analytics in real time, an Engagement Score metric on a 0-5 scale that evaluates recipient behavior across interest, reading, and conversion criteria, and a pre-sending vetting process that verifies database quality before allowing sending. Mailkit also offers add-on services including Email Authentication (SPF, DKIM, DMARC), Inbox Brand Visibility (BIMI), Deliverability consulting, Email Training, and a free BIMI Inspector tool, with public API integration available for client system connectivity.
Mailkit operates a hybrid go-to-market combining self-serve platform access (app.mailkit.eu) with sales-led outreach for enterprise clients and an agency partnership program that enables indirect distribution. Revenue is generated primarily through volume-based monthly subscriptions (starting at 7,900 CZK for Czech customers and $389/month internationally), supplemented by professional services for consultancy and training. The customer base spans enterprise and mid-market accounts across e-commerce (Notino, KetoDiet, Stoklasa, Decodoma, a fashion e-shop in 17 markets), financial services/insurance (ČSOB Insurance), retail/office supplies (Sonepar), health/pharmaceutical (NaturaMed), and stationery retail (Stoklasa). Mailkit holds ISO 27001 and ISO 9001 certifications, is certified by the Certified Senders Alliance, and holds membership in Signal Spam and M3AAWG, with CEO and founder Jakub Olexa serving in M3AAWG leadership roles. The company is bootstrapped with no disclosed external funding and operates with 11-50 employees.
Mailkit firmographics
Firmographics- Name
- Mailkit
- Legal name
- Mailkit s.r.o.
- Website
- https://mailkit.com
- Company type
- Private
- Founded year
- 2006
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Mailkit is a Prague-based email marketing automation platform that operates its own proprietary email infrastructure to deliver, automate, segment, and personalize email and SMS campaigns for enterprise and mid-market clients across e-commerce, financial services, and retail.
- Ownership category
- akta.pro rank
Mailkit industry classification
Industry- Product category
- Email Marketing Automation
- NAICS
- Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182), Computer Systems Design and Related Services (54151)
- SIC
- Services-Prepackaged Software (7372), Services-Advertising (7310)
- akta.pro primary industry
- Marketing Automation Platforms & Services (BPAFAFAC)
- akta.pro secondary industries
- Email Marketing Services (Campaigns, Deliverability, Lifecycle) (BPAFAKAB), Email Authentication & Domain Protection (DMARC/SPF/DKIM) (HDADAKAC), Marketing Automation, CRM & Lifecycle Messaging (BPAMALAE)
Keywords
Where Mailkit is headquartered
LocationHeadquarters
- HQ city
- Prague
- HQ country
- Czechia
- HQ region
- Europe
Offices1 record
Markets served
Mailkit business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Infrastructure, Personnel, Marketing or Sales, Operations
Revenue model
- Volume-based Email Marketing Subscription: Subscription-based pricing model where fees are determined by email volume sent. Customers pay based on their monthly sending volume with tiered pricing.
- Agency Partnership Services: Agency partnerships allow managing multiple client sub-accounts, enabling agencies to handle email marketing for multiple businesses.
- Consultancy Support Services: Consultation support services available based on individual customer orders, providing expertise on email marketing strategy and optimization.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | Volume-based pricing starting from $389/month for international customers |
| Subscription | Monthly | Volume-based pricing starting from 7,900 CZK/month for Czech customers |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels6 records
Mailkit product offering
Product offeringCore offering
Mailkit operates a sophisticated marketing automation platform with its own proprietary email infrastructure for international email distribution. The platform enables efficient automation, segmentation, and personalization of email and SMS campaigns with near-perfect deliverability worldwide. It is sold as a volume-based subscription service supplemented by add-on services for deliverability, email authentication, agency partnerships, training, and inbox brand visibility (BIMI).
Product overview
Mailkit is a sophisticated marketing automation platform with its own infrastructure, designed for efficient automation, segmentation, and personalization of email campaigns. The core product is the Mailkit Platform, supplemented by a suite of services including Email Authentication, Deliverability, Agency Partnerships, Email Training, and Inbox Brand Visibility. Additional tools include the BIMI Inspector for email authentication verification and an Engagement Score metric for evaluating recipient engagement. The platform integrates with external systems via API.
Differentiator
Problem solved
Functional benefit
Products and services
- Mailkit Platform A sophisticated marketing automation platform for efficient automation, segmentation, and personalization of email campaigns, featuring near-perfect deliverability worldwide through proprietary infrastructure. Designed for e-commerce businesses, agencies, and enterprises needing international email and SMS campaign capabilities.
- Email Authentication Service Standalone service that protects a brand's domain reputation from bad actors impersonating or sending fake emails under the customer's name, using SPF, DKIM, and DMARC authentication setup and management.
- Deliverability Service Service ensuring emails are delivered properly and do not end up in spam, including campaign sending and proper delivery management. Leverages Mailkit's proprietary infrastructure and bot detection to optimize inbox placement.
- Agency Partnerships Service Service enabling agencies to manage multiple client sub-accounts on the Mailkit platform, with the ability to invite in-house or client teams to collaborate. Suitable for start-ups through to corporations.
- Email Training Service Educational service ensuring customers have the necessary knowledge of email best practices from the beginning of their mailing journey. Covers the what and why of email performance.
- Inbox Brand Visibility Service Premium service enabling brands to stand out in recipient inboxes through message highlighting and display of the brand logo (BIMI - Brand Indicators for Message Identification).
- BIMI Inspector Free tool for inspecting BIMI (Brand Indicators for Message Identification) readiness, allowing senders to verify email authentication setup and brand display configuration in recipient inboxes.
Quantifiable outcome
- 30% revenue increase for fashion e-shop client after switching to Mailkit
- +3 more outcomes
Companies that use Mailkit
Customer profileNamed customers8 records
Segments4 records
Ideal customer profiles4 records
Mailkit technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Feature8 records
Mailkit partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core.
- NotinocoreLong-term strategic partnership since 2015. Notino is largest perfume and cosmetics seller in Europe operating in 27 countries with 20+ million customers. Mailkit provides email and SMS campaigns plus strategic consulting on database hygiene and engagement scoring. Joint presentation at Email Evolution Conference.
- M3AAWG (Messaging, Malware, Mobile Anti-Abuse Working Group)coreActive membership in international industry organization focused on email abuse prevention and standards development. CEO Jakub Olexa serves as Guides Committee Vice-Chair and Champions Committee Co-Chair, directly influencing global email industry standards that are later adopted by email providers and sending platforms.
- CSA (Certified Senders Alliance)corePartnership with Certified Senders Alliance, German organization that certifies email senders meeting strict deliverability and compliance standards. Shows commitment to email best practices and compliance with European standards.
- Hooky (Marketing Agency)coreMarketing agency collaboration in 30% revenue increase case study. Coordinated with client and Mailkit on multi-market email tool replacement across 17 markets. Demonstrates agency partnership capabilities for complex migrations.
Scale indicators9 records
Recent moves6 records
Expansion highlights6 records
Mailkit competitors and assessment
Company assessmentDirect peers
- ConvertKit (now Kit): Email marketing platform originally focused on creators and small businesses, now expanding into broader commerce and automation. Comparable to Mailkit in PLG motion, self-serve onboarding, and tiered pricing for SMB customers.
- ActiveCampaign: Email marketing, marketing automation and CRM platform serving SMBs and mid-market businesses globally. Overlaps directly with Mailkit on automation, segmentation, and personalization capabilities for similar customer segments.
- GetResponse: Polish-headquartered email marketing and marketing automation platform operating across Europe and globally. Highly comparable as another Central European email marketing platform with similar SMB and mid-market positioning to Mailkit.
- MailerLite: Email marketing and automation platform known for ease of use, serving SMBs and creators. Competes with Mailkit in the same SMB/PLG tier of email marketing with comparable pricing structure and feature set.
- Klaviyo: Public, commerce-focused email and SMS marketing automation platform with strong emphasis on e-commerce segmentation and personalization. Directly comparable to Mailkit in core email automation functionality but targets larger e-commerce brands globally with significantly more capital and headcount.
- Brevo (formerly Sendinblue): European-headquartered (France) email marketing and marketing automation platform offering email, SMS, CRM, and transactional messaging. Direct peer to Mailkit in European mid-market email automation, with comparable SMB and enterprise customer base.
Broad incumbents
- Mailchimp: One of the largest email marketing platforms globally, owned by Intuit. Competes with Mailkit in the SMB and mid-market email automation space, though Mailchimp offers a much broader marketing suite including landing pages, social ads and CRM integration.
- Twilio SendGrid: Major email delivery infrastructure provider owned by Twilio, used by many ESPs as their underlying send infrastructure. Notable because Mailkit's differentiator is operating its own infrastructure rather than depending on SendGrid or similar providers.
- HubSpot Marketing Hub: Comprehensive marketing, sales and CRM platform with email marketing as one module within a much broader suite. Represents the all-in-one competitive threat to standalone email platforms like Mailkit, especially for mid-market and enterprise buyers.
Others
- Mailgun: Transactional and marketing email API platform owned by Sinch. Relevant adjacent infrastructure provider that many ESPs (unlike Mailkit) depend on for email delivery, representing the third-party send infrastructure alternative Mailkit has chosen not to use.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
Mailkit social profiles
Digital presenceMailkit financial estimates
Financial estimateRevenue estimate
Valuation estimate
Mailkit leadership team
Management profileNumber of profiles
Profiles3 records
Mailkit funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Mailkit M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Mailkit
What does Mailkit do?
Mailkit operates a sophisticated marketing automation platform with its own proprietary email infrastructure for international email distribution. The platform enables efficient automation, segmentation, and personalization of email and SMS campaigns with near-perfect deliverability worldwide. It is sold as a volume-based subscription service supplemented by add-on services for deliverability, email authentication, agency partnerships, training, and inbox brand visibility (BIMI).
Is Mailkit a public or private company?
Mailkit is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Mailkit founded?
Mailkit was founded in 2006. It employs 11 to 50 people.
Where is Mailkit based?
Mailkit is headquartered in Prague, Czechia, in the Europe region.
How does Mailkit make money?
Three revenue lines are on record. Volume-based Email Marketing Subscription is the primary driver. The others are agency Partnership Services and consultancy Support Services.
Who are Mailkit's main competitors?
Direct peers on record are ConvertKit (now Kit), ActiveCampaign, GetResponse, MailerLite, Klaviyo and Brevo (formerly Sendinblue). Broad incumbents are Mailchimp, Twilio SendGrid and HubSpot Marketing Hub. Mailgun is listed as an others.
Does Mailkit have an API?
Yes. Mailkit provides a public API for developers to interconnect and integrate with the platform. The API allows users to access their data, including customer personal data, and integrate internal systems. Integration is facilitated through detailed and well-written documentation. Users are required to ensure only authorized personnel can access the API. Developer documentation is at www.mailkit.com/resources/api.
What industry is Mailkit in?
Mailkit's product category is Email Marketing Automation. Its primary akta.pro industry code is BPAFAFAC, Marketing Automation Platforms & Services, with a secondary code of BPAFAKAB, Email Marketing Services (Campaigns, Deliverability, Lifecycle). Its NAICS code is 5182 and its SIC code is 7372.