Glossary
Unicode
The standard that gives every character, in every language, a number so text can be shared between systems.
ValidReach Team · Updated 2026-10-26
In practice
Email uses it for names, subjects and bodies. Standards for internationalised addresses allow non-ASCII characters in the address itself, but support varies between providers and tools, so check yours before accepting or sending to such addresses.
Verification and sending
If your verifier or sending tool does not handle non-ASCII addresses, it may reject valid ones. Test with a few real examples.