Deliverability
Whitelist
A list of approved senders whose emails bypass spam filters. Also called allowlist or safelist.
Definition
A whitelist (also called allowlist or safelist) is a list of approved senders whose emails bypass spam filters. Users can whitelist senders in their email client, and businesses maintain whitelists of trusted senders. Being whitelisted ensures inbox delivery regardless of content. The term "allowlist" is increasingly preferred.
Pro Tip
Encourage new subscribers to add your sending address to their contacts or whitelist.