---
title: "Hello, Ireland! Sending SMS in Twilio’s Ireland Region"
description: "Twilio’s Ireland region, IE1, provides EU data residency for Programmable SMS, keeping personal data such as recipient phone numbers and message bodies in the EU through the supplier edge. Adopting it requires separate IE1 credentials and an IE1 Messaging Service, while US1 Messaging Services cannot be reused; SMS to and from +1 numbers, RCS, and WhatsApp are not currently supported. For API calls, the main code change is replacing api.twilio.com with api.dublin.ie1.twilio.com, while client SDK users switch the region parameter from us1 to ie1 and can retain the Dublin edge. Twilio’s logs include a region filter to verify where messages were processed, and the post notes that Studio and TaskRouter support in IE1 is still an initiative."
---

# Hello, Ireland! Sending SMS in Twilio’s Ireland Region

[Twilio](https://yomu.fyi/company/twilio) · Gary Spencer · Aug 18, 2026

**Type:** Tutorial

## Summary

Twilio’s Ireland region, IE1, provides EU data residency for Programmable SMS, keeping personal data such as recipient phone numbers and message bodies in the EU through the supplier edge. Adopting it requires separate IE1 credentials and an IE1 Messaging Service, while US1 Messaging Services cannot be reused; SMS to and from +1 numbers, RCS, and WhatsApp are not currently supported. For API calls, the main code change is replacing api.twilio.com with api.dublin.ie1.twilio.com, while client SDK users switch the region parameter from us1 to ie1 and can retain the Dublin edge. Twilio’s logs include a region filter to verify where messages were processed, and the post notes that Studio and TaskRouter support in IE1 is still an initiative.

## Context

Businesses may need SMS data residency in the EU or prefer to keep personal data within the EU. The post also identifies current IE1 limitations: +1-number SMS, RCS, and WhatsApp are not supported.

## Approach / What changed

Use Twilio’s IE1 region with separate authentication credentials and an IE1 Messaging Service. API users change the hostname to api.dublin.ie1.twilio.com, while SDK users set the region parameter to ie1; Twilio logs provide a region filter for verification.

## Takeaways

- IE1 keeps SMS personal data, including end-user phone numbers and message bodies, in the EU through the supplier edge, with no additional cost stated in the post.
- IE1 requires separate credentials and Messaging Services; a US1 Messaging Service cannot be used in IE1.
- The API request structure remains the same apart from the regional hostname, and SDK clients switch the region from us1 to ie1.

**Tags:** [API](https://yomu.fyi/topic/api), [Compliance](https://yomu.fyi/topic/compliance), [Privacy](https://yomu.fyi/topic/privacy)

- Source: [Twilio](https://www.twilio.com/en-us/blog/developers/tutorials/product/send-sms-twilio-ireland-region)
- Source URL: https://www.twilio.com/en-us/blog/developers/tutorials/product/send-sms-twilio-ireland-region
- Ingested by Yomu: 2026-09-09T16:01:19.281Z

[Read original post](https://www.twilio.com/en-us/blog/developers/tutorials/product/send-sms-twilio-ireland-region)