The <Say> TwiML verb is able to properly pronounce words from over 25 different languages using a number of different Text-to-Speech (TTS) voices. Voices and languages are declared in your TwiML response using the <Say> verb's voice and language attributes. For help forming TwiML TTS responses, please see Twilio Docs: TwiML Voice - <Say>.
Man and Woman Voices
Twilio's basic Man and Woman voices support the following languages:
| Language | Value |
| English (American) | en |
| English (British) | en-gb |
| Spanish | es |
| French | fr |
| German | de |
| Italian | it |
Alice Voice
Twilio's basic Alice voice uses an improved engine that is capable of speaking 26 total dialects (18 languages and 14 locales):
| Language | Value |
| Catalan | ca-ES |
| Danish | da-DK |
| German | de-DE |
| English (Australian) | en-AU |
| English (Canadian) | en-CA |
| English (British) | en-GB |
| English (Indian) | en-IN |
| English (American) | en-US |
| Spanish (Castilian) | es-ES |
| Spanish (Latin American) | es-MX |
| Finnish | fi-FI |
| French (Canadian) | fr-CA |
| French (European) | fr-FR |
| Italian | it-IT |
| Japanese | ja-JP |
| Korean | ko-KR |
| Norwegian | nb-NO |
| Dutch | nl-NL |
| Polish | pl-PL |
| Portuguese (Brazilian) | pt-BR |
| Portuguese (European) | pt-PT |
| Russian | ru-RU |
| Swedish | sv-SE |
| Chinese (Mandarin) | zh-CN |
| Chinese (Cantonese) | zh-HK |
| Chinese (Taiwanese Mandarin) | zh-TW |
Amazon Polly Voices
Amazon Polly voices each support a specific language and locale. Polly voices are also fully customizable for pronunciations, speed, tone, and more. For a full list of available Amazon Polly Standard and Neural Voices, please see Twilio Docs: Text-to-Speech. For more information, please see our article Getting Started with Amazon Polly Text-to-Speech.