How to Send SMS to The United Kingdom (Rules & Deliverability)

Sending SMS to the United Kingdom? Local rules decide whether your messages arrive. Here is what you need to know.

SMS rules in the United Kingdom

The UK follows PECR and UK GDPR for consent; alphanumeric sender IDs are supported, but bulk senders must honor opt-out and avoid grey routes that get filtered.

How to send reliably

• Register your sender ID and templates where required before sending.
• Get explicit consent and honor opt-out to stay compliant.
• Use approved A2P routes, not grey routes that get filtered.

How Rainmail helps

Rainmail sends from your own domain on a dedicated, isolated IP with SPF, DKIM, DMARC, reverse-DNS and managed warm-up handled for you, plus an AI that watches your list health and deliverability. It also welcomes the senders Amazon SES, SendGrid and Mailchimp reject — from $8, cheaper per email than SES. Run the free 10-second checker or see plans.