JUMP TOIntroductionIntroductionAuthenticationRequestsResponsesErrorsPaginationRate LimitingLocaleAPI ReferenceMessagesList MessagesgetSend MessagepostMetadataNotificationsSend NotificationpostChannelsList ChannelsgetGet ChannelgetCreate ChannelpostUpdate ChannelpatchDelete ChanneldeleteContactsList ContactsgetGet ContactgetDelete ContactdeleteSettingsGet SettingsgetUpdate SettingspatchWebhooksWebhooksEventsMessage ReceivedMessages DeliveredMessage FailedMessages ReadMessage EchoChannel EventsSecurityAmio ChatAmio ChatMessagesList MessagesgetTextpostImagepostStructurepostStructure - Horizontal ScrollpostQuick RepliesMetadataNotificationsSend NotificationpostChannelsList ChannelsgetGet ChannelgetCreate ChannelpostUpdate ChannelpatchDelete ChanneldeleteContactsList ContactsgetGet ContactgetDelete ContactdeleteSettingsGet SettingsgetUpdate SettingspatchDomains WhitelistWebhooksMessage ReceivedMessages DeliveredMessages ReadMessage EchoNotification ReceivedPostback ReceivedEmail - DaktelaEmail - DaktelaMessagesTextpostChannelsList ChannelsgetGet ChannelgetCreate ChannelpostUpdate ChannelpatchDelete ChanneldeleteContactsList ContactsgetGet ContactgetDelete ContactdeleteWebhooksMessage ReceivedFacebook MessengerFacebook MessengerMessagesList MessagesgetTextpostImagepostAudiopostVideopostFilepostLocationReceiptpostStructurepostStructure - Horizontal ScrollpostButtonsQuick RepliesMetadataTypesTagsNotificationsSend NotificationpostChannelsList ChannelsgetGet ChannelgetCreate ChannelpostUpdate ChannelpatchDelete ChanneldeleteContactsList ContactsgetGet ContactgetDelete ContactdeleteSettingsGet SettingsgetUpdate SettingspatchGet Started ButtonMenuUser InputsDomains WhitelistWebhooksMessage ReceivedMessages DeliveredMessages ReadMessage EchoPostback ReceivedOpt-inMobileMobileMessagesList MessagesgetTextpostMetadataChannelsList ChannelsgetGet ChannelgetCreate ChannelpostUpdate ChannelpatchDelete ChanneldeleteContactsList ContactsgetGet ContactgetDelete ContactdeleteWebhooksMessage ReceivedMessages DeliveredMessage FailedMessage EchoRCS Business MessagesRCS Business MessagesMessagesList MessagesgetTextpostStructurepostChannelsList ChannelsgetGet ChannelgetCreate ChannelpostUpdate ChannelpatchDelete ChanneldeleteContactsList ContactsgetGet ContactgetDelete ContactdeleteWebhooksMessage ReceivedTelegramTelegramMessagesList MessagesgetTextpostQuick RepliesStructurepostImagepostVideopostChannelsList ChannelsgetGet ChannelgetCreate ChannelpostUpdate ChannelpatchDelete ChanneldeleteContactsList ContactsgetGet ContactgetDelete ContactdeleteWebhooksMessage ReceivedMessage EchoPostback ReceivedViber BotViber BotMessagesList MessagesgetTextpostImagepostVideopostFilepostStructurepostStructure - Horizontal ScrollpostButtonsMetadataChannelsList ChannelsgetGet ChannelgetCreate ChannelpostUpdate ChannelpatchDelete ChanneldeleteContactsList ContactsgetGet ContactgetDelete ContactdeleteWebhooksMessage ReceivedMessages DeliveredMessages ReadMessage FailedMessage EchoPostback ReceivedViber Business MessagesViber Business MessagesMessagesList MessagesgetTextpostImagepostStructurepostButtonsMetadataChannelsList ChannelsgetGet ChannelgetCreate ChannelpostUpdate ChannelpatchDelete ChanneldeleteContactsList ContactsgetGet ContactgetDelete ContactdeleteWebhooksMessage ReceivedMessages DeliveredMessages ReadMessage FailedMessage EchoWhatsAppWhatsAppMessagesHandling Message ErrorsList MessagesgetTextpostFormatting in Text MessagesImagepostAudiopostFilepostVideopostLocationpostStructurepostQuick RepliesTemplatesSending TemplatesTextpostChannelsList ChannelsgetGet ChannelgetCreate ChannelpostContactsList ContactsgetGet ContactgetDelete ContactdeleteWebhooksMessage ReceivedMessages DeliveredMessages ReadMessage FailedPostback ReceivedPowered by LocaleSome resources use or return locale defining the language and region. The format is following {language ISO 639-1}_{region ISO 3166-2}, i.e. en_US for American english. Language is defined in ISO 639-1. Region represents country or subdivisions and is defined in 3166-2