BlitzAPI vs Invoice Guru

Smart ICP Targeting & People Search

This feature allows your team to instantly find and prioritize ideal customer profiles with surgical precision. Beyond simple search, BlitzAPI's algorithm ranks and surfaces decision-makers based on your specific targeting criteria, ensuring your outreach efforts focus on high-intent, high-potential contacts from the very first API call. This intelligent prioritization eliminates noise and directs resources toward the prospects that matter most for your campaign's success.

Verified Email & Phone Enrichment

BlitzAPI provides direct access to verified, accurate professional email addresses and direct-dial phone numbers. The system is built on a foundation of deliverability, meaning every data point is validated for accuracy to maximize the success of your outbound communications. This ensures your sales and marketing teams can connect with confidence, drastically improving connection rates and reducing time wasted on incorrect or outdated contact information.

Advanced Catch-All Email Validation

A standout capability, this feature validates catch-all email domains (like @company.com) with over 98% accuracy in real-time. This solves a major pain point for GTM teams, allowing you to confidently identify which contacts at a target company are reachable and which are not. By eliminating guesswork, you preserve credits, protect sender reputation, and ensure your messages land in legitimate inboxes.

Unlimited Data Enrichment API

Scale your data operations effortlessly with BlitzAPI's flexible enrichment endpoints. Through simple, well-documented API calls, you can enrich contact records with comprehensive professional details, append company data, match LinkedIn profiles, and update information at any volume. This API-first architecture is built for reliability, allowing you to seamlessly integrate clean B2B data into any stage of your workflow, from lead capture to campaign execution.

Instant Invoice Creation

Users can create and send professional invoices in less than a minute. The feature allows the addition of business logos, VAT, payment terms, and due dates automatically, ensuring a polished presentation with minimal effort.

Automatic Invoice Numbering

Invoices are numbered and dated automatically according to fiscal year settings, which not only helps maintain organization but also ensures that users stay compliant with accounting standards.

OCR Receipt Scanner (AI)

This feature allows users to snap a photo of their receipts, and the AI technology reads all relevant details to save it as an expense entry, eliminating the need for manual data entry and reducing time spent on bookkeeping.

Smart Payment Tracking

Invoice Guru automatically matches incoming bank transactions with unpaid invoices, providing users with real-time visibility of their financial status. This feature ensures that users can easily identify which clients have paid and which invoices remain outstanding.

Automating Outbound Sales Prospecting

Sales development representatives (SDRs) and outbound teams use BlitzAPI to build targeted prospect lists automatically. By integrating the People Search and Enrichment APIs into their CRM or sales engagement platform, they can trigger workflows that find, verify, and enrich leads based on firmographics, instantly creating a stream of sales-ready contacts for personalized outreach campaigns without manual research.

Building Scalable Lead Enrichment Pipelines

Marketing and RevOps teams implement BlitzAPI as the core engine for their lead enrichment processes. When a new lead is captured via a form or event, an API call automatically enriches that record with verified company data, direct contact info, and LinkedIn profiles. This transforms raw leads into fully qualified, actionable accounts, enabling faster lead routing, more personalized nurturing, and accurate segmentation for ABM strategies.

Executing Waterfall ICP Targeting Playbooks

Sophisticated GTM teams employ a "waterfall" approach to targeting. They use BlitzAPI to first target their primary ideal customer persona. Once that quota is met, the system seamlessly moves to the next priority persona, and so on. This ensures maximum efficiency in credit usage and campaign focus, allowing teams to systematically expand their reach while always prioritizing the highest-value targets first.

Maintaining CRM Data Hygiene at Scale

As contact and company data decays over time, BlitzAPI provides a systematic solution for data cleansing. Scheduled API jobs can run through existing CRM records to validate email addresses, update job titles and company information, and append missing phone numbers. This ongoing enrichment ensures sales and marketing teams are always working with accurate, up-to-date information, improving campaign performance and operational efficiency.

On-Site Invoicing

Tradespeople can generate and send invoices immediately after completing a job while still on-site. This instant invoicing capability ensures faster payment and improves cash flow for small businesses.

Expense Management

With the OCR receipt scanner, users can efficiently manage their expenses by scanning receipts on the go. This feature simplifies the tracking of business expenditures and reduces the administrative burden associated with manual entry.

Client Communication

Invoice Guru allows users to send invoices and quotes directly via email from their mobile devices, facilitating seamless communication with clients. This feature is particularly beneficial for those who need to respond quickly to client inquiries.

Compliance Updates

With built-in compliance features for regulations like UK MTD and Poland's KSeF, Invoice Guru provides users with the security of knowing they are adhering to necessary legal requirements. This is particularly valuable for businesses that operate in multiple countries.

BlitzAPI represents the next evolution in B2B data infrastructure, moving beyond static databases to become a dynamic API engine for modern go-to-market (GTM) teams. It is designed for organizations that have outgrown manual prospecting and unreliable data vendors, providing the clean, verified data fuel required to power automated and scalable growth playbooks. At its core, BlitzAPI serves Growth, Sales Operations, and Revenue Operations teams by offering a suite of powerful APIs for people search, company and contact enrichment, email validation, and phone number retrieval. Its fundamental value proposition is a commitment to quality and deliverability-first practices, ensuring teams pay only for accurate, actionable data that directly translates into pipeline, not just raw information. This focus transforms BlitzAPI from a simple tool into a strategic teammate, seamlessly integrating into existing workflows to empower GTM agencies, outbound sales teams, and scaling startups to execute repeatable processes with unparalleled data integrity and efficiency.

Invoice Guru is a mobile-first invoicing application specifically designed to cater to the unique needs of tradespeople and small service businesses. Traditional invoicing tools often prioritize desktop usability, which can be cumbersome for professionals who are frequently on the move, such as painters, plumbers, and electricians. Invoice Guru enables users to create, send, and manage invoices directly from their smartphones, significantly enhancing convenience and efficiency. The app stands out by allowing users to generate invoices in just 60 seconds, thereby minimizing time spent on administrative tasks. Additional features include automatic accountant reports, secure bank integration for payment matching, and AI-powered OCR receipt scanning for streamlined expense management. Designed with compliance in mind, Invoice Guru adheres to evolving regulations such as UK MTD and Poland's KSeF, ensuring that tradespeople can focus on their work with peace of mind. Created by a tradesperson, Invoice Guru is a solution that truly understands the day-to-day challenges of running a small business.

What makes BlitzAPI different from other B2B data providers?

BlitzAPI is built as an API-first infrastructure product, not just a data vendor. We prioritize quality over quantity, with a deliverability-first model that ensures you pay primarily for verified, accurate results. Our architecture is designed to integrate into your existing GTM workflows seamlessly, offering flexibility and scalability that legacy tools often lack, all while providing superior accuracy, especially on challenging data points like catch-all emails.

How does the credit system work?

BlitzAPI operates on a transparent credit-based pricing model. You purchase a bundle of credits, and different API calls consume a set number of credits based on the complexity and data value of the request (e.g., an enrichment may cost more than a validation). This allows you to pay directly for the value you receive. Notably, we offer 1,000 free credits to start, so you can test the quality and fit within your own systems without any initial investment.

Can BlitzAPI integrate with our current tech stack?

Absolutely. BlitzAPI is built for integration with modern GTM ecosystems. It offers clean, well-documented REST APIs that can be connected directly to your CRM (like Salesforce or HubSpot), sales engagement platforms (like Outreach or Salesloft), marketing automation tools, and internal databases. This API-first approach means you can embed powerful data capabilities anywhere in your workflow without disruptive platform changes.

What is your data coverage and accuracy?

Our database covers over 360 million verified B2B contacts and 60 million enriched company profiles across major global markets. We maintain a greater than 98% email deliverability rate, which is a testament to our rigorous validation processes and real-time verification capabilities. Our focus on continuous updates and accuracy ensures you are working with the most reliable B2B data available.

How fast can I create an invoice with Invoice Guru?

You can create an invoice in just 60 seconds, making it one of the quickest invoicing solutions available for tradespeople and small service businesses.

Is Invoice Guru compliant with tax regulations?

Yes, Invoice Guru is designed to be 100% tax compliant and is built with future regulations in mind, including UK MTD and Poland’s KSeF.

Can I use Invoice Guru for international transactions?

Absolutely. Invoice Guru supports multiple currencies and languages, making it suitable for international business operations.

What payment methods does Invoice Guru support?

The app allows for various payment options, including bank transfers and PayPal, ensuring that you can get paid through the method that works best for you.

BlitzAPI is a B2B data API platform designed to fuel go-to-market strategies with clean, verified contact and company information. It empowers growth teams to streamline prospecting and enhance outbound workflows with accurate data. Teams often explore alternatives at different growth stages, seeking solutions that better match their evolving budget, specific feature requirements, or unique platform integration needs. This is a natural part of scaling operations efficiently. When evaluating other options, prioritize data accuracy and deliverability, seamless workflow integration, and a clear path for scaling your data consumption. The right tool should align with your team's current operational maturity while supporting future growth.

Invoice Guru is a mobile invoicing app specifically designed for UK tradespeople and small service businesses, allowing users to create compliant invoices in under a minute. As the demand for efficient and user-friendly invoicing solutions grows, many users seek alternatives due to factors such as pricing structures, desired features, or platform compatibility. Choosing the right alternative requires careful consideration of the specific needs of your business, including ease of use, integration capabilities, and overall functionality to ensure it aligns with your operational goals. When exploring alternatives, prioritize options that streamline invoicing processes, offer robust support for financial management, and accommodate any unique compliance requirements your business may face. Look for features that enhance productivity and simplify administrative tasks, allowing you to focus on delivering quality services to your clients.