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Overview

OpenPhone supports international text messaging to most countries worldwide at competitive rates. Message delivery and sender ID display vary by destination country due to local regulations and carrier requirements. Some countries support full two-way messaging while others are send-only.
International messaging requires international calling to be enabled and sufficient credits in your account.

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Sender ID and two-way messaging

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How sender ID works internationally

US and Canada messaging: Recipients always see your OpenPhone number as the sender ID, enabling full two-way conversations. International messaging: Sender ID display depends on the destination country’s regulations and technical capabilities. Some countries maintain your OpenPhone number while others use alternative sender IDs.

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Countries with two-way messaging

Recipients in these countries see your OpenPhone number and can reply directly: European countries:
  • Austria, Belgium, Czech Republic, Denmark
  • Estonia, Finland, Hungary, Netherlands
  • Poland, Portugal, Slovakia, Sweden, Switzerland
Other countries and regions:
  • Canada, Chile, Hong Kong, Israel, Singapore
Two-way messaging means recipients can reply to your messages and their responses will appear in your OpenPhone inbox.

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Countries with send-only messaging

For most other countries not listed above, you can send messages but recipients may see a different sender ID. They cannot reply directly to your OpenPhone number. Alternative sender ID reasons:
  • Local regulations requiring specific sender formats
  • Carrier technical limitations
  • Delivery optimization requirements

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Special restrictions

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United Kingdom limitations

As of June 2023, major UK providers (EE, Telefonica, SKY) block SMS messages from non-UK 10-digit numbers. Messages to UK numbers are filtered or blocked entirely.
UK messaging status:
  • Outbound to UK: Generally blocked or filtered
  • UK to UK: Domestic UK messaging works normally
  • Alternative: Consider other communication channels for UK contacts

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Country-specific considerations

Delivery variations:
  • Message delivery times vary by country and carrier
  • Some countries have higher filtering rates
  • Delivery confirmations may be limited
Rate differences:
  • International messaging rates vary significantly by destination
  • Check current rates before sending campaigns
  • Consider volume discounts for large messaging needs

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Setting up international messaging

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Prerequisites

Account requirements:
  • International calling enabled for your phone number
  • Sufficient international credits purchased
  • Owner or Admin permissions to configure
Technical setup:
  1. Enable international calling in phone number settings
  2. Purchase international credits
  3. Verify destination country messaging support

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FAQs