Common technical terms in email

Stay current and expand your email knowledge with our list of common technical terms.

Email bounce

Email bounces occur due to temporary or permanent email delivery failures. Temporary delivery failures, also called soft bounces, often occur due to server downtime, interrupted internet connections, and temporary failures. Permanent delivery failures, or hard bounces, occur due to incorrect email addresses, email servers that reject emails, and invalid domain names.

Too many email bounces make inbox service providers (ISPs) suspicious about IP addresses, resulting in ISPs sometimes rejecting senders’ emails, which in turn negatively impacts senders’ email deliverability.

Learn more about maintaining email deliverability, keeping an email list clean, and using our Inbox Placement tool to guarantee email delivery.