Email verification
Terms that appear in verification results and decisions.
- Bot detection
Techniques that tell automated visitors from people, used on forms and when measuring email engagement.
- Bounce
A message that could not be delivered and was returned to the sender with a reason.
- Bounce rate
The percentage of sent messages that bounced.
- Burner email
A throwaway address made to receive one message or one signup and then be abandoned.
- Catch-all
A mail domain set up to accept messages for any address at that domain, whether or not a mailbox exists.
- Disposable email address
An address on a service built for short-lived use, often with no signup.
- Email address
The string that identifies a mailbox, in the form local-part@domain.
- Email checker
A tool that tests whether an email address is valid and can receive mail.
- Email gateway
A server or service at the edge of an organisation’s mail system that filters inbound and outbound messages.
- Email intelligence
Information about an address beyond whether it is valid, such as its provider type and risk flags.
- Email prefix
The local part of an address, the text before the @.
- Email validation
Checking that an address is correctly formed.
- Email verification
Checking whether an email address can actually receive mail, without sending a message to it.
- Gmail
Google’s email service, used with a free gmail.com address or on a custom domain through Google Workspace.
- GMX
A free email provider popular in Germany and other European countries.
- Greylisting
An anti-spam method where a server temporarily rejects the first message from an unknown sender and accepts a later retry.
- Hard bounce
A permanent delivery failure, such as an address that does not exist.
- MX record
A DNS record that names the mail servers for a domain and their priority.
- Real-time verification
Checking an email address at the moment it is entered, before it is saved.
- Recipient email address
The address a message is delivered to.
- Role-based email address
An address for a function or team rather than a person, such as info@, sales@ or support@.
- SMTP
Simple Mail Transfer Protocol: the standard for sending email between servers and from clients to servers.
- Soft bounce
A temporary delivery failure, such as a full mailbox or a busy server.
- Typosquatting
Registering domains that look like real ones, such as a common misspelling, to catch mistyped mail or trick people.
- Valid email
An address that is correctly formed and that the receiving server will accept mail for.