Premium Feature

Send SMS Under Your Branded Identity

Replace generic phone numbers with your actual company name. Increase open rates and instantly establish trust.

Get Started Free Check Supported Countries

Branded vs. Generic Messaging

Without Custom Sender ID
SMS
+1 (833) 459-009110:42 AM

Hello, your ticket request for tomorrow has been received. Thanks!

Generic & unrecognized sender number
High Trust
With Custom Sender ID
ACME
ACME BRAND10:42 AM

Hello, your ticket request for tomorrow has been received. Thanks!

Clean branded title, no random digits

1How the formula works

Sheet SMS implements a special formula: =SENDSMSWITHSENDER(). By including a third parameter in your formula, you tell our server to dispatch via Twilio using your approved identity.

Formula Syntax
// Structure:
=SENDSMSWITHSENDER(message, phone_number, sender_name)
// Real Example:
=SENDSMSWITHSENDER("Your OTP code is 4820", "+33612345678", "MYBRAND")
ArgumentTypeDescription
messageString / Cell RefThe content of the text message. Can reference a cell like A2.
phone_numberString / Cell RefThe recipient's number starting with +. (e.g. "+33612345678").
sender_nameString (Max 11 chars)Your brand name. Must contain only letters, numbers, and spaces. Max 11 characters.

Country Regulations & Fallbacks

Alphanumeric Sender IDs are governed by telecommunication rules:

  • Supported Regions: Works out of the box in the UK, European Union, Australia, parts of Asia, and South America.
  • USA & Canada Restriction: Local carriers block custom alphabetic names to protect users from spoofing. Custom senders cannot be used for US numbers without a dedicated 10DLC registration campaign.
  • Automatic Fallback: If you send to a country that does not support Custom Sender IDs, Sheet SMS can fall back to using one of our verified local phone numbers to guarantee delivery.

2Key Rules & Character Constraints

Maximum 11 characters length limit.
Only contains alphanumeric characters (A-Z, a-z, 0-9) and spaces.
Cannot start with a space or consist of numbers only.
Special characters and emojis are not supported as sender ID.
A one-time admin approval is required before first dispatch.
No extra monthly fees - included in all balance plans.

3How the validation process works

1

Enter formula

Write `=SENDSMSWITHSENDER("Hello!", "+447123456789", "MYCOMPANY")` in your sheet.

2

Pending approval email

The first time you invoke "MYCOMPANY", the cell will show a pending approval note. An automated request goes to our admin and we send you an email confirmation.

3

Approval & sending starts

Once our admins review and approve your brand identity (usually takes under 1 hour), the formula automatically runs and dispatches your branded SMS.

Sender ID FAQ

Why does my formula return "Custom sender is pending approval"?

To prevent fraud and spoofing (such as someone pretending to be "NETFLIX" or "PAYPAL"), our security team manually verifies custom sender registrations. This happens once. Once approved, you can use that sender name instantly in any formula.

Can custom sender IDs receive replies?

No. Alphanumeric Sender IDs are one-way only. The recipient's mobile OS cannot reply to a text that has an alphabetic sender name instead of a phone number. If you need two-way conversation, you must use standard `SENDSMS` formulas.

Are there extra costs for using a custom sender?

No! The cost per SMS is identical to standard rates. There is no surcharge, set-up cost, or monthly fee to register alphanumeric sender names.