Trestle provides email validity checks, in addition to phone and address validity checks, to confirm if an email is valid.
Besides the email-to-name match check, here are the validity-related checks:
- Syntax, Long User Name, etc. Checks: This includes a general syntax error, invalid character address, invalid domain syntax, invalid username in syntax, address too long, etc. If failed, we return email.is_valid = False and the email.contact_grade will be F.
- Disposable Email Checks: This checks whether the email domain is disposable. A disposable email domain, or DEA, is a temporary email address that expires after a set amount of time or number of uses. DEAs are aliases to your email address and can be used to sign up for websites or newsletters that the recipient doesn’t trust or is using for fraudulent purposes. If the email is disposable, the email.contact_grade will be F.
- Role-Based Account Checks: These checks, as the name suggests, confirm if the email is not an alias like developer@domain.com or sales@domain.com. While still valid, these emails can be lower-quality sign-ups. The email.contact_grade will be C or lower, depending on the various internal rules assessed.
- Abuse Word Checks: Trestle also does specific abuse words and other related checks to confirm the email is valid and a high-quality lead or sign-up. If there are abusive words, the email.contact_grade will be between C and F, depending on various internal rules assessed.
- Junk Email Checks: Trestle has developed an algorithm for identifying emails that may be junk, meaning we generally have high confidence that this email might be fake, does not exist, and certainly is not actively used. For example, if an email contains an inappropriate word or an abnormally strange set of characters that would never be used in English, the email could be flagged as potentially being a junk email. In addition to these checks, Trestle has identified words likely to indicate a fake email address (i.e., fakemail@gmail.com or test@noemail.com). These things contribute to a score used to identify potentially junk emails. If the email is classified as junk, the email.contact_grade will be D.
Overall, we highly recommend businesses check for email validity to confirm the signup quality and set appropriate filters/workflows depending on email.is_valid and email.contact_grade response values.
In addition to the above checks, Trestle offers an Email Deliverability check add-on (Everything To Know About the Email Deliverability Add-on). Email Deliverability checks are an opt-in feature. If you are interested in adding this check to your Real Contact API Queries, reach out to support@trestleiq.com.