Add superpowers to your phone number.

Boost your engagement with String’s robust text & voice solutions.
From your desktop or mobile device.

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Business ready texting solutions

String is a cloud-based direct phone line and messaging solution that scales and modernizes business texting, calling, and direct messaging. Available directly from your desktop or mobile device.

Customer Support

Customer support

80% of customers would rather communicate with businesses via text message and prefer chat or text over call based customer service.


target marketing

SMS marketing has a 98% open rate, increasing your campaign conversions, creating loyal customers and engaging new ones.

Lead Generation

lead generation

Offers for exclusive information paired with a keyword let prospective customers opt-in to your marketing lists.


send promotions

Quickly send coupons, sales and exclusive promo codes to reward existing customers and incentivize first-time buyers.

View Industry Use Cases

Your customers want to communicate via text messaging

open rate

faster response rate

interested in signing up for texts

conversion rate

Today's consumer spends more time texting on their mobile phone than any other mobile activity. Providing a simple and widely used solution to communicate with your business immediately enhances your customer engagement.

1-to-1 and mass texting is an easy and affordable way to build brand loyalty and satisfy customer expectations in our messaging-first world.

source | source

Leading-edge SMS marketing, calling, and messaging


Import, add, tag and note to organize & segment your contacts.

Mass Texting

Send mass messages to specific audiences at the same time.

Segment Tags

Tag contacts to segment and send targeted, relevant messages.

Message Templates

Preformatted and personalizable text message templates.


Connect web apps you already use to your String account.

Keyword Responses

Create keyword campaigns to build lead lists, run promotions, etc.

WiFi Calling

Place and receive calls over WiFi in app or on the web.

Multiple Numbers

Add multiple phone numbers, each with separate inboxes.

View All Features

Integrates with apps you already use

Build automations in 1,000's of other apps to streamline your workflows and sync systems to one another.







Zoho CRM






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Power-up your number or get a new one

rocket pack with String
  • Add superpowers to your existing phone number
    Transfer your existing phone number to String to begin using texting, calling, and direct messaging superpowers.
  • Get a new String phone number of your choice
    String includes a local phone number of your choice, along with millions of options for toll free, premium and vanity phone numbers for purchase.

Get Started

Current number "land" locked?

String offers messaging for landline phone numbers

Easily add String’s text messaging superpowers to your existing landline phone number. No changing or modifying your current voice service.

Using our app or any browser on your computer, your landline number becomes a professional SMS messaging solution.

Text-Enable My Landline

antique landline phone


Takeoff with String

The most powerful phone app for the modern professional.

Increase productivity, effectiveness and responsiveness with powerful messaging automations.

Get String Today