Hopewiser
Hopewiser is a leading provider of address validation, data cleansing, and data quality services, offering solutions designed to improve the accuracy and efficiency of business operations. The platform uses real-time data from sources like the Royal Mail Postcode Address File (PAF) to validate addresses, ensuring that businesses can confidently deliver to the right customers. Hopewiser also provides tools for email address validation, bank account verification, and data hygiene services, helping organizations reduce errors, prevent fraud, and enhance customer communication. Its offerings are available through cloud-based tools, standalone software, and professional consulting services.
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TPSClear
TPSClear solves a specific UK problem: calling a number on the Telephone Preference Service (TPS) or Corporate TPS (CTPS) register without consent is a PECR breach, and since 5 February 2026 the ICO can fine up to GBP 17.5 million or 4% of global turnover.
Most teams either screen nothing or upload CSVs to a bureau and wait. TPSClear screens inside the CRM instead. The moment a phone number is added or changed on a HubSpot contact or company, or a Zoho CRM lead, contact or account, the verdict is written back to the record within seconds. Every number is re-screened 27 days after its last check.
The verdict lands on a normal CRM field, so it works in lists, workflows, sequences and reports, with a separate result for each phone field. Voll Studios Ltd, the company behind TPSClear, is licensed by the DMA as a TPS and CTPS list cleaner. Register data is supplied through our licensed data partners.
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Melissa Data Quality Suite
Up to 20 percent of a company’s contacts contain bad data according to industry experts; resulting in returned mail, address correction fees, bounced emails, and wasted sales and marketing efforts. Use the Data Quality Suite to standardize, verify and correct all your contact data, postal address, email address, phone number, and name for effective communications and efficient business operations. Verify, standardize, & transliterate addresses for over 240 countries. Use intelligent recognition to identify 650,000+ ethnically-diverse first & last names. Authenticate phone numbers, and geo-data & ensure mobile numbers are live & callable. Validate domain, syntax, spelling, & even test SMTP for global email verification. The Data Quality Suite helps organizations of all sizes verify and maintain data so they can effectively communicate with their customers via postal mail, email, or phone.
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Postcoder
Postcoder is an API from Allies Computing that gives developers a single endpoint for verifying and validating customer contact data at the point of entry. Used across sectors from healthcare to retail, it's built to drop into checkout, onboarding, and account creation flows with minimal friction.
What's included:
Address lookup – Postcode, partial address, or coordinate-based search across Royal Mail PAF, Ordnance Survey AddressBase, and 249 countries worldwide.
Bank validation – Real-time sort code and account number verification, with branch data and direct debit eligibility returned in the response.
Email validation – Domain and formatting checks with disposable address detection.
Mobile validation – Live network status checks across 200+ countries.
OTP verification – SMS-based one-time password delivery.
Clear documentation, multi-language sample code, and a straightforward REST structure mean integration is quick. 30 day free trial with no credit card required.
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