RealMail Review: Email Verification API for SaaS

This overview brings together publicly available information about RealMail from its official website, realmail.dev. RealMail is an email verification service built for SaaS companies, aimed at reducing the number of signups that turn out to be invalid, mistyped, disposable, or otherwise low-quality email addresses.

The Problem RealMail Targets

The site lays out a long list of specific ways a business can silently lose customers through bad email addresses, including:

• Wrong formatting, such as a missing dot before a domain extension.
• Simple typos, like a misspelled popular email domain.
• Full mailboxes that bounce every message sent to them.
• Free personal email addresses submitted in B2B contexts where a business email is expected.
• Generic role-based addresses (such as info@ or admin@) that often go unread.
• Disposable and temporary email addresses used by low-commitment or abusive signups.
• Fake addresses and mail traps that can damage a sender's reputation.
• Alias or tagged addresses, and domains with misconfigured mail server or DNS records.

Core Feature Set

• Fully customizable rules — the site states that a business can choose exactly which types of addresses to allow or block, rather than RealMail making that decision automatically.
• Real-time configuration — settings such as allow lists and block lists can reportedly be updated on the fly without needing new code deployments.
• Minimal developer effort — the integration is described as requiring no special development skills once the initial API call is wired in.
• Daily updated database — the list of temporary and disposable domains is stated to be refreshed daily.
• Community-backed reporting — users can reportedly submit newly discovered temporary or disposable domains to a shared global list.

How the API Works

According to the documented example on the homepage, integrating RealMail comes down to a single API endpoint call. A sample cURL request shown on the site sends an email address to https://api.realmail.dev/v1/validate along with an API key in the request header, and the response indicates whether that email passes validation based on the account's configured rules. Code examples are also provided for Node.js, Python, PHP, Java, and Go.

Pricing

RealMail uses a pay-as-you-go credit model with no subscription or ongoing commitment, according to the site. Listed tiers include:

• 2,500 validations for $16
• 5,000 validations for $30
• 10,000 validations for $50
• 25,000 validations for $100
• 50,000 validations for $130
• 100,000 validations for $240
• 250,000 validations for $350
• 500,000 validations for $500

The per-validation cost decreases at higher volume tiers, which may suit growing SaaS products that expect their validation needs to scale over time.

Who Is Behind RealMail

The site credits Mike Ivars and Víctor Arenas as the team behind RealMail, and the product has a listing on Product Hunt, referenced directly on the homepage.

Resources and Support

RealMail provides public documentation, a blog, an affiliate program, and a dedicated page where anyone can report a disposable email domain that isn't yet in the database. Its FAQ section covers common questions across general product information, getting started, usage limits, pricing, technical rate limits, and support.

Summary

RealMail is a configurable, pay-as-you-go email validation API aimed at SaaS teams that want to cut down on invalid signups, protect their sender reputation, and reduce wasted marketing and support spend on unreachable or low-quality email addresses. Its single-endpoint integration and flexible allow/block-list rules are the core of its pitch to development teams.

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