Validate Newsletter Subscribers and Boost Deliverability
As a newsletter creator, your subscriber list is your most valuable asset. Ensure every new signup is a real, engaged reader, preventing bounces and protecting your sender reputation on platforms like Substack or ConvertKit.
The problem
Running a newsletter on platforms like Substack or Beehiiv means constantly attracting new subscribers. However, a significant portion of new sign-ups can be bots, spammers, or users providing fake email addresses to access gated content. These invalid entries inflate your subscriber count, skewing analytics and making it harder to gauge actual audience engagement. High bounce rates from sending to fake emails can also trigger spam filters, hurting your overall deliverability and potentially causing legitimate emails to land in junk folders for all your readers.
Manually cleaning subscriber lists is a tedious and time-consuming task that takes away from content creation. Without real-time validation at the point of signup, you risk paying for inactive or invalid subscribers on volume-tiered platforms. This not only wastes your budget but also dilutes the quality of your audience data, making it challenging to segment effectively or pitch to potential sponsors with accurate engagement metrics. Protect your investment in content by ensuring your audience is genuine.
How Verifyr solves it
Concrete example
// Example: Validate new subscriber via API
fetch('https://api.verifyrhq.com/validate', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'X-API-KEY': 'YOUR_VERIFYR_API_KEY'
},
body: JSON.stringify({ email: 'new.subscriber@example.com' })
})
.then(response => response.json())
.then(data => {
if (data.status === 'valid' && !data.disposable) {
// Add to ConvertKit/Substack list
console.log('Valid email, add to newsletter.');
} else {
// Block or flag
console.log('Invalid or disposable email, block signup.');
}
});