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Support for plus addressing ("+ addressing")
The + sign in recipients' email addresses is available (upon sending and receiving).
These "wildcard" aliases signify that your message can be sent to (or received from) an email address containing a + (e.g. abc+def@domain.xyz) and will still arrive in the abc@domain.xyz mailbox (but with the possibility of automatically filtering and sorting depending on upon what comes after the +).
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