Stop losing customers
due to email addresses
RealMail helps more of your visitors sign up and become customers by catching typos, unwanted addresses and abuse at sign-up.
- 1-minute setup
- Win back up to 30% of lost customers
- Save thousands of dollars, time, and effort
How are you losing customers?
Every visitor who doesn't sign up, or signs up with a bad email address, is a lost user and a lost customer. That lowers your MRR and raises your CAC.
Wrong format
A well-meaning user types john82@icloudcom (missing the dot before “com”). They never receive your emails and forget about you.
Typos
A prospect types sally23@gmial.com, never gets your welcome email, assumes your product doesn't work, and leaves.
Full mailbox
When a mailbox is full, its server rejects new messages. You can't reach that user, and they slip away.
Free email
An address from a free provider like yahoo.com is usually personal. If you sell B2B, it's often better to ask for a work email from the start.
Role addresses
Shared addresses like info@, admin@, or marketing@ are often read by nobody in particular, so your messages go unnoticed. Another lost customer.
Non-business email
If you sell to companies, a personal email hides who the lead works for, so you can't qualify them properly. That's a missed opportunity.
Disposable email
Low-intent users who just want to look around, and sometimes your competitors, sign up with these addresses. Any healthy business should block them.
Fake addresses
Malicious users sign up with fake addresses to abuse your product. Detecting them on their first attempt is the best protection.
Temporary email
Like disposable addresses, temporary inboxes bring low-quality users. The difference is that they delete themselves automatically after a while.
Spam traps
Someone may sign up with a spam trap address on purpose. Emailing it can get you flagged as a spammer and damage your sender reputation.
Alias addresses
Also known as tagged addresses (name+tag@gmail.com). Users rely on them to filter or hide their real address, and they make it easy to create duplicate accounts.
Email server problems
An address whose domain, DNS records, or mail server are misconfigured is as good as no address at all. That's why checking it up front is crucial.
RealMail stops all of this, your way
Temporary and disposable emails, typos, non-business accounts, and much more.
You choose which types of addresses to accept or reject. We don't decide for you.
Change your rules in real time, and add domains to your allow list or block list whenever you need.
Your developers add a single API call. After that, anyone on your team can manage everything from the dashboard, no coding required.
We update our list of temporary and disposable domains every day from several sources, so new services are caught fast.
Anyone can report a temporary or disposable domain to our shared list, helping every other company.
Why do you need RealMail?
Because you can't afford to waste nearly 30% of your budget on bounced or invalid emails. It's time to take control.
Pricing
No subscription and no commitment. Pay as you go.
One endpoint to rule them all
Your developers call a single endpoint and check the response to know whether an email is valid. Everything else is configured from the dashboard.
curl --location 'https://api.realmail.dev/v1/validate' --header 'x-api-key: YOUR_API_KEY' --header 'Content-Type: application/json' --data-raw '{
"email": "email@domain.com"
}'
Frequently Asked
Questions
RealMail is an email validation API that helps startups and SaaS companies catch invalid, mistyped, and disposable email addresses at sign-up, before they cost you customers.
Email validation reduces sign-up friction, improves deliverability, lowers bounce rates, and makes sure your emails reach real, active inboxes. That protects your sender reputation, improves engagement, and has a direct impact on your revenue.
Because you can't afford to spend time and money attracting traffic, leads, and users only to lose them at the first and most important touchpoint: their email address.
Studies suggest that around 30% of sign-ups are lost because email addresses aren't validated. Those users never become customers, and the bounced emails hurt your brand, which has a direct impact on your business.
RealMail is built for startups: an easy-to-use dashboard, fully customizable rules, minimal development work, and real-time results. Our list of disposable domains is updated every day and enriched by our customers and the community.
Relying only on magic links has drawbacks: users have to go back to their inbox every time they sign in, the emails can be caught by spam filters, links can expire before they are used, and many users aren't familiar with this method. Read more on our blog.
Social login has drawbacks too: you depend on a third party for a key part of your product, you can lose users if the provider changes its terms, and it limits how you customize the experience and comply with privacy regulations. Evaluate these factors before relying on it. Read more on our blog.
Go to the sign-up page and create an account with your email or Google. Every new account includes 100 free validations, so you can try the service before you buy.
It's easy. Create an API key in your dashboard and follow our documentation, which includes step-by-step instructions and code samples in several programming languages.
No. There are no subscriptions or commitments: you buy credits as you need them. Each credit validates one email address.
The API stops validating emails until you buy more credits. You can check your balance in the dashboard at any time. If you need recurring purchases or a large volume, contact us.
Yes. Besides the API, you can validate addresses one by one from the dashboard.
Yes. From the dashboard you can add domains to your allow list, so addresses from them are always valid, and to your block list, so they are always rejected.
Any address: personal, business, or from free providers. RealMail detects invalid, disposable, and role-based addresses, and you decide which ones to accept.
Yes. Create a separate API key for each application from the same account, and invite your team to your organization.
Not yet, but we're working on it.
We sell one-time credit packs: the bigger the pack, the lower the price per validation. You can see all packs in the pricing section.
No. Your credits never expire, so you can buy a bigger pack at a better price and use it whenever you want.
Yes. Every new account includes 100 free validations to try the service.
Each API key can make up to 120 requests per minute. If you need more, contact us. See our API documentation for details.
Security is our top priority. All requests use HTTPS, API keys are stored hashed, and we only keep validation history for 365 days. See our privacy policy for details.
We offer support by email and live chat.
Email us at support@realmail.dev or use the chat on our website and in your dashboard.
Yes. You decide whether to accept disposable, free, and role-based addresses, and you can customize the error messages returned to your users.
Yes. Your dashboard shows your validation activity over time and the full history of every validation, so you can monitor quality and make data-driven decisions.
