JUMP TOAPI OverviewWhich API Should I Use?AuthenticationStatus CodesWebhooksRate LimitingTimestampsPaginationPostmanUsing JSON and XMLTransmit SMS APISMSSend SMSpostCancel SMSpostFormat NumberpostGet Responses by MessageID, Keyword or MobilepostGet Responses by Time FramegetContacts & ListsBulk Add Contacts from CSV FilepostAdd ListpostAdd Field to ListpostRemove ListpostAdd Contact to ListpostUpdate ContactpostRemove ContactpostOpt Out/Unsubscribe ContactpostCheck Progress Of ImportpostGet Contact InformationpostReportingGet Message/Campaign InformationpostGet SMS Delivery StatuspostGet SMS Sent CountpostGet Activity ReportpostGet SMS Sent to AccountgetGet Message/Campaign ReportpostGet Message/Campaign RecipientspostGet Message ReportpostGet Information About A ListpostGet Information About All ListsgetNumbersAdd Dedicated Virtual NumberpostGet NumbersgetGet Number InformationpostEdit Number OptionspostEmail SMSAdd EmailpostDelete EmailpostKeywordsAdd KeywordpostEdit KeywordpostGet KeywordspostAccountGet BalancegetTransmit Message APIMMSAbout MMSSend MMSpostGet MMSgetSMSList SMSgetSend SMSpostGet SMSgetWebhookAbout WebhooksCreate WebhookpostRetrieve all webhooksgetGet WebhookgetUpdate WebhookputDelete WebhookdeleteTransmit SMS Fast APIFast SMSSend SMS FastpostWhatsApp API/v2/whatsappSend WhatsApp message.postPowered by Retrieve all webhooksget https://api.transmitmessage.com/v2/webhook
