How can I use an API to suppress or reject fake emails on my signup form?
Summary
What email marketers say8Marketer opinions
Email marketer from Webmaster Forum says that email validation APIs can reduce the number of invalid addresses, improving the integrity of the email list and overall marketing efficiency.
Email marketer from Email Geeks shares that you can add a validation API to your signup form to stop invalid emails from entering your database, catching a large portion of them.
Email marketer from ZeroBounce explains that integrating an email validation API helps ensure that only valid and active email addresses are added to your list, reducing bounce rates and improving overall email marketing performance.
Email marketer from Hunter.io shares that implementing an email verification API on your signup form is a proactive way to prevent fake or disposable email addresses from entering your system, improving data quality.
Email marketer from Reddit shares to use an email validation service with an API to filter fake signups. Recommends checking for common typo domains and disposable email addresses.
Email marketer from Clearout shares that email validation API can improve accuracy by combining syntax checks, domain validation, and mailbox verification. They also check against a database of known fake addresses.
Email marketer from StackOverflow shares that adding a CAPTCHA in addition to email verification API helps avoid bots from signing up. Suggests rate limiting API requests.
Email marketer from EmailListVerify explains their Javascript API can be integrated into signup forms to validate email addresses real-time. This service catches common mistakes such as typos and temporary accounts.
What the experts say5Expert opinions
Expert from Email Geeks explains that Kickbox has an API that provides a thumbs up/down rating and a Sendex score to indicate address quality, along with possible corrections for mistyped domains.
Expert from Word to the Wise explains that Validation APIs can be used to also reject spam traps, complainers, litigators, and disposable emails.
Expert from Word to the Wise explains that Email validation APIs should be used to help suppress and reject fake emails to prevent invalid emails making it into your list, but also to ensure it's used ethically and not to discriminate.
Expert from Email Geeks explains you can add nocaptcha to mitigate bot signups, and Kickbox can detect typos and suggest corrections.
Expert from Email Geeks explains that validation services will also flag whether they think it’s a single use or disposable email address.
What the documentation says6Technical articles
Documentation from AbstractAPI explains that using their Email Validation API you can check the format, domain, and mailbox existence of an email address, helping to filter out invalid or fake emails during signup.
Documentation from Debounce.io shares their email verification API provides an all-in-one solution for filtering risky emails by checking email syntax, domain reputation, and disposable email status in real time, to enhance signup security.
Documentation from Mailgun explains that their Email Validation API can be integrated into signup forms to identify and reject invalid email addresses. It detects typos, disposable emails, and other indicators of fake accounts.
Documentation from NeverBounce explains their comprehensive email cleaning service validates in real time, filtering fake emails. Offers features like syntax verification, domain checks, and risk assessment to boost signup accuracy.
Documentation from Kickbox shares that their real-time email verification API allows you to verify email addresses as they are entered on your signup form, preventing fake or invalid addresses from being added to your list.
Documentation from Email Hippo shares that with their API, developers can filter out invalid signups by checking the email's syntax, domain status, and whether the email is a disposable address.