Software Alternatives, Accelerators & Startups

clearout.io VS assertpy

Compare clearout.io VS assertpy and see what are their differences

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clearout.io logo clearout.io

Clearout helps sales and marketing teams improve deliverability, maintain CRM data quality, find verified prospects, and prevent bad data from entering their systems through email verification, email finding, prospecting, Form Guard, and Data Pulse.

assertpy logo assertpy

A straightforward assertion library for Python.
  • clearout.io Landing page
    Landing page //
    2026-06-12
  • clearout.io Email Verifier
    Email Verifier //
    2026-06-12
  • clearout.io Email Finder
    Email Finder //
    2026-06-12
  • clearout.io Data Pulse
    Data Pulse //
    2026-06-12
  • clearout.io Form Guard
    Form Guard //
    2026-06-12
  • clearout.io LinkedIn Email Finder Chrome Extension
    LinkedIn Email Finder Chrome Extension //
    2026-06-12
  • clearout.io Disposable Email Address Checker
    Disposable Email Address Checker //
    2026-06-12

Clearout is an AI-powered data quality, prospecting, and deliverability platform helping businesses maintain accurate customer data, improve campaign performance, and generate more revenue from their GTM efforts.

Trusted by 80,000+ businesses worldwide, Clearout processes billions of validations daily helping teams reduce bounce rates, improve sender reputation, prevent bad data from entering their CRM, and build high quality prospect lists for outbound campaigns.

Email Verification Validate email addresses before sending campaigns to reduce bounces and protect deliverability. Verify emails via bulk uploads, CRM imports, APIs, Google Sheets, or real-time workflows. Advanced validation includes mailbox checks, disposable email detection, role-account detection, spamtrap detection, catch-all resolution, and guaranteed deliverability options.

Email Finder Find verified business email addresses using a prospect's name, company, or domain. Available via bulk processing, APIs, Google Sheets, and prospecting workflows. AI-powered confidence scoring helps teams prioritize outreach ready contacts.

Prospecting Build targeted prospect lists using AI-powered discovery, real-time enrichment, a LinkedIn Chrome Extension, and in-app search. Discover verified and enrich records before outreach.

Form Guard Block fake, disposable, bot generated, and low quality submissions from entering your CRM. Validates email, phone, and name fields in real time to improve lead quality at the point of capture. Prevents spam, fake signups, and bot submissions, recovers abandoned leads, audits every submission, and can be added to any form without coding. Data Pulse Automatically maintain CRM data quality. Continuously monitors and validates new contacts from forms, imports, integrations, and keeping records clean without manual workflows. With 14 day free trial.

Security & Compliance GDPR โ€ข SOC 2 Type II โ€ข ISO 27001 โ€ข ISO 27701 โ€ข Okta SSO โ€ข 256-bit SSL Encryption

Support 24/7 support

  • assertpy Landing page
    Landing page //
    2022-11-06

clearout.io

$ Details
freemium $16 (3000 Credits)
Platforms
Browser iOS Windows Android REST API Mac OSX Wordpress Web
Release Date
2019 February
Startup details
Country
United States
State
California
Founder(s)
Gnanaprakash Rathinam
Employees
20 - 49

assertpy

Website
github.com
Pricing URL
-
$ Details
-
Platforms
-
Release Date
-
Categories

clearout.io features and specs

  • Google Sheet integration
  • Zapier integration
  • WordPress integration
  • JavaScript code
  • Analytics dashboards
  • Analytics and Reporting
    Yes - Full Reporting Platform included free in all subscriptions
  • Webhooks
  • Real-time APIs
  • Spamtrap Detection
  • Catch-All Domain Detection
  • Gibberish detection
  • Team Collaboration
  • HubSpot 2-Way Sync
  • Admin Controls

assertpy features and specs

  • Fluent API
    Assertpy offers a fluent API that makes assertions more readable and expressive, enabling developers to write assertions in a natural language style that is easy to understand.
  • Chainable Assertions
    It allows for chainable assertions, enabling multiple checks to be performed in a single line of code, thereby reducing verbosity and enhancing clarity.
  • Comprehensive Assertion Methods
    The library provides a wide range of built-in assertion methods, catering to various types of data validations, such as checking for size, type, value, and more.
  • Extensibility
    Assertpy supports extending its functionality by defining custom assertions, allowing developers to tailor it to their specific needs.
  • Pythonic
    Designed with Pythonic principles in mind, Assertpy fits seamlessly into Python projects, enabling idiomatic and consistent code style.

Possible disadvantages of assertpy

  • Learning Curve
    Developers new to the library may encounter a learning curve due to the distinct approach of using fluent and chainable assertions as opposed to traditional methods.
  • Limited by Python Version
    The library may have limitations in terms of compatibility with older versions of Python, requiring users to ensure their environment is up-to-date.
  • Performance Overhead
    The additional abstraction layer introduced by a fluent interface might introduce some performance overhead, especially in performance-critical or resource-constrained environments.
  • Less Community Support
    Compared to more established testing libraries, Assertpy might have less community support and fewer resources available for resolving issues or getting help.
  • Dependency Management
    Using a third-party library introduces additional dependencies to manage, which could complicate project maintenance and compatibility.

Analysis of clearout.io

Overall verdict

  • Clearout.io is generally regarded as a good tool for businesses and marketers looking to maintain clean and valid email lists. Its user-friendly interface, effective features, and customer support make it a popular choice among users.

Why this product is good

  • Clearout.io is considered a reliable email verification service aimed at improving email deliverability by cleaning up email lists. It is known for its accuracy, easy integration with various platforms, and competitive pricing. Users appreciate its wide range of features, including real-time verification, detailed reporting, and risk assessment features that help prevent hard bounces, spam traps, and fake emails.

Recommended for

    Clearout.io is recommended for marketers, businesses, and developers who need to ensure their email lists are clean and deliverable. It is also suitable for organizations that regularly send out newsletters or marketing campaigns and want to maintain a high sender reputation while reducing bounce rates and improving engagement.

Analysis of assertpy

Overall verdict

  • assertpy is a well-regarded, lightweight assertion library for Python that provides a fluent, chainable API for writing readable and expressive test assertions, making it a solid choice for improving test clarity.

Why this product is good

  • Offers a fluent, chainable assertion syntax that makes tests more readable and self-documenting
  • Comprehensive built-in assertions for strings, numbers, lists, dicts, files, dates, and more
  • Produces clear, descriptive failure messages that speed up debugging
  • Lightweight with minimal dependencies and easy to integrate into existing test suites
  • Framework-agnostic, working seamlessly with pytest, unittest, and other test runners
  • Actively maintained open-source project with good documentation and community support

Recommended for

  • Python developers who want more readable and expressive test assertions
  • Teams using pytest or unittest looking to enhance assertion clarity
  • Projects that value descriptive failure messages for faster debugging
  • Developers coming from fluent assertion libraries in other languages (like AssertJ or Chai)
  • QA engineers and testers writing maintainable, self-documenting test code

clearout.io videos

Form Guard - Block Bad Leads At The Point Of Capture

More videos:

  • Demo - Email Finder Service Walkthrough | Clearout | Get Pre-Verified Email Address With High Accuracy.
  • Demo - Email verifier Service Walkthrough | Clearout | Top Rated Email Verification Tool with High Accuracy
  • Tutorial - Clearout Email Verification - Getting Started Video

assertpy videos

No assertpy videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to clearout.io and assertpy)
Email Verification
100 100%
0% 0
Testing
0 0%
100% 100
Email Marketing
100 100%
0% 0
Python
0 0%
100% 100

Questions & Answers

As answered by people managing clearout.io and assertpy.

How would you describe the primary audience of your product?

clearout.io's answer

  • B2B Sales Teams
  • Revenue Operations Teams
  • Demand Generation Teams
  • Growth Marketers
  • SDR and Outbound Teams
  • CRM Administrators
  • Customer Acquisition Teams
  • SaaS Companies
  • Agencies and Data Providers

What makes your product unique?

clearout.io's answer

Clearout combines email verification, prospecting, form validation, and CRM data quality monitoring within a single platform. Instead of solving only one part of the data quality lifecycle, Clearout helps businesses capture, validate, enrich, monitor, and maintain customer data from acquisition through outreach.

What's the story behind your product?

clearout.io's answer

Clearout was created to solve a common problem faced by sales and marketing teams: poor data quality. Invalid emails, outdated contacts, fake form submissions, and inaccurate prospect data lead to wasted budget, lower deliverability, and inefficient outreach. The platform evolved from email verification into a broader data quality ecosystem that helps businesses maintain accurate customer data throughout the entire customer acquisition lifecycle.

Which are the primary technologies used for building your product?

clearout.io's answer

  • Artificial Intelligence (AI)
  • Machine Learning
  • Cloud Infrastructure
  • REST APIs
  • Real-Time Data Processing
  • Telecom & Mail Server Validation Networks
  • Browser Extensions
  • CRM & Marketing Automation Integrations

Why should a person choose your product over its competitors?

clearout.io's answer

Most solutions focus on a single problem, such as verification, enrichment, or prospecting. Clearout helps teams improve deliverability, maintain CRM hygiene, prevent bad data from entering systems, and build verified prospect lists using one platform. This reduces tool sprawl while improving overall GTM efficiency.

Who are some of the biggest customers of your product?

clearout.io's answer

  • Microsoft
  • Linkedin
  • Adobe
  • Chargebee
  • Dripify
  • Remote
  • Dun&Bradstreet
  • Truecaller
  • HCL, etc

User comments

Share your experience with using clearout.io and assertpy. For example, how are they different and which one is better?
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Reviews

These are some of the external sources and on-site user reviews we've used to compare clearout.io and assertpy

clearout.io Reviews

  1. mathivananweb
    Best Tool for Email validation and CRM contact cleaning

    Previously used Email Verifier to validate contacts for campaign activities. Implemented Form Guard to prevent fake and spam leads. Now using DataPulse to clean and maintain CRM contacts. This helps improve data quality, lead accuracy, and campaign deliverability.

  2. Hemant
    ยท Working at TakeitHome ยท
    Best tool for keepign CRM clean

    We've been using Clearout for the past few months, and it's been working like a charm. The email validation is accurate, and the Form Guard integration was incredibly smooth. Setup was quick, and it started protecting our forms right away.

    Overall, it's been a reliable solution, and we're very happy with the experience. Highly recommended!

    ๐Ÿ‘ Pros:    Super simple
    ๐Ÿ‘Ž Cons:    Nothing, so far
  3. Easy to Use and Great for Keeping CRM Data Clean

    Clearout has been easy to use and has helped us keep our CRM data clean and accurate. It quickly finds invalid email addresses, improves our data quality, and works smoothly with our workflow. The customer support team is also very helpful whenever we need assistance.


Clearout vs Zerobounce
Trying new things is not fun for all, but it's usually worth it. It will take less than a minute to create a free Clearout account . Disclaimer: The third party's name is utilized for comparison purposes only and is the trademark of its respective owner. Clearout claims no rights whatsoever in the use of such name and/or any related trademarks. Clearout is not affiliated...
Source: clearout.io

assertpy Reviews

We have no reviews of assertpy yet.
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Social recommendations and mentions

Based on our record, clearout.io seems to be more popular. It has been mentiond 7 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

clearout.io mentions (7)

  • Best Sales Tools
    Clearout Email Finder: Marketers frequently wonder if the emails they have gathered, the domains they are eyeing, and the prospects they are contacting are the right ones. Instead of shooting an arrow in the dark, tools like Clearout make it easier to capture only the right data. Source: about 3 years ago
  • Do you know any tool that enables scraping of LinkedIn accounts? ๐Ÿง
    I have been researching and working with multiple lead scraping tool such as Apollo, drop contacts etc., but I have found that these services usually do not validate the data before sharing to us and I found something new that's is clearout.io is coming with their prospecting service which is going to give you the validated data with email address and phone number which will avoid the hard bounces and increase the... Source: over 3 years ago
  • How do you identify a fake email address
    At Clearout.io we are commonly asked how do we know if the email is fake or not? This is our jam to verify emails at scale. With this guide, we will help anyone to get smarter and better at spotting fake emails. Source: over 3 years ago
  • What is email scrubbing
    Need to scrub your email list fast? Clearout can streamline it for you. Source: over 3 years ago
  • How can we create and manage a successful email marketing campaign
    For the longest time, email marketing was every marketer's go-to hack to reach out to and connect with customers one-on-one. Source: over 3 years ago
View more

assertpy mentions (0)

We have not tracked any mentions of assertpy yet. Tracking of assertpy recommendations started around Mar 2021.

What are some alternatives?

When comparing clearout.io and assertpy, you can also consider the following products

NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.

grappa - grappa is an declarative, verbose, and expressive assertion library for Python.

ZeroBounce - Removes invalid emails from your list to prevent email bounces from ruining your deliverability.

Hunter.io - Find all the email addresses related to a domain

Email List Verify - The Fastest Way to Improve Email List Deliverability and ROI

Kickbox - Verify your email address lists with our drag and drop interface, or integrate into your app with our API. Prevent fake and bot account sign-ups by confirming your users are real humans with a real email address.