# Telgorithm > Telgorithm Inc. is an A2P 10DLC specialist providing SMS, MMS, RCS and Voice APIs for > software platforms. The company was established in 2021 by telecom veterans and > focuses on message deliverability and 10DLC compliance for ISVs and SaaS vendors. > Its patented Smart Queueing technology (U.S. Patent No. 12,457,522) manages carrier > rate limits so that messages are queued rather than dropped. Per-message pricing for > SMS, MMS, RCS and Voice is published in full on the pricing page linked below. > Contact: hello@telgorithm.com ## Who Telgorithm is for Software platforms that send A2P messages on behalf of their own end customers: ISVs, vertical SaaS products, CRMs and marketing platforms operating in the US. Customers include Constant Contact (email and SMS marketing), Boulevard (salon and spa software), Bonzo (CRM), Builder Prime (contractor software) and TextSpot. ## Why Telgorithm - Patented Smart Queueing (U.S. Patent No. 12,457,522) queues messages that would exceed a carrier rate limit instead of letting them fail. - Automated A2P 10DLC brand and campaign registration, integrated directly with The Campaign Registry, with status updates through to phone number activation. - Multi-DCA connectivity rather than a single downstream aggregator. - Per-message and per-minute rates for SMS, MMS, RCS and Voice are published in full on the pricing page, alongside carrier pass-through fees. - SMS, MMS, RCS and Voice run on one platform and the same phone numbers. - 10DLC compliance and registration support is delivered as a service, not only as an API. ## Products - [SMS API for A2P 10DLC](https://www.telgorithm.com/sms-api): Automate the A2P 10DLC journey and experience guaranteed message deliverability. - [MMS Text Messaging API for Software Platforms](https://www.telgorithm.com/mms-api): Build reliable A2P MMS experiences with Telgorithm’s MMS API. Send rich media messages at scale while simplifying 10DLC compliance and deliverability. - [Voice APIs for Software Platforms](https://www.telgorithm.com/voice-api): Compliment your messaging API services with Telgorithm's reliable and easy-to-use programmable Voice APIs. - [Telgorithm RCS Business Messaging (RBM) for A2P Business Communication](https://www.telgorithm.com/rich-business-messaging-rbm): RCS Business Messaging (RBM) from Telgorithm for A2P business communication, with AI-powered fallback to SMS and Conversational RCS billing. - [Smart Queueing to Maximize 10DLC Message Deliverability](https://www.telgorithm.com/smart-queueing): Prevent customers from exceeding 10DLC carrier limits. Telgorithm’s Smart Queueing saves an average of 20% of messages from failing to improve deliverability. ## Pricing and costs - [SMS, MMS, RCS and Voice Pricing](https://www.telgorithm.com/pricing): Explore transparent SMS, MMS, RCS and Voice API pricing from Telgorithm. Compare messaging and voice rates and get custom pricing based on your volume. - [Carrier and Other Pass-Through Fees](https://www.telgorithm.com/carrier-fees): Current carrier pass-through fees for A2P 10DLC SMS and MMS, listed per carrier. ## Comparisons - [The Twilio SMS Alternative for 10DLC | Explore Telgorithm](https://www.telgorithm.com/telgorithm-vs-twilio): Looking for a Twilio SMS alternative or need support with Twilio 10DLC registration? Explore Telgorithm for better 10DLC deliverability and support. - [Bandwidth 10DLC Alternative | Explore Telgorithm for Better Support](https://www.telgorithm.com/telgorithm-vs-bandwidth): Looking for a Bandwidth 10DLC alternative? Explore Telgorithm for better 10DLC deliverability and support. - [Telnyx 10DLC Alternative | Explore Telgorithm for Better Support](https://www.telgorithm.com/telgorithm-vs-telnyx): Looking for a Telnyx 10DLC alternative? Explore Telgorithm for better 10DLC support and deliverability. ## API documentation - [Telgorithm API documentation](https://api.telgorithm.com/): OpenAPI-based reference for the Messaging, Voice and Carrier Lookup APIs. - [Messaging API overview](https://api.telgorithm.com/docs/messaging#overview): Endpoints, authentication and webhook samples for sending SMS and MMS. - [API documentation index for LLMs](https://api.telgorithm.com/llms.txt): Machine-readable llms.txt index of every API documentation page, with a description of each. - [API documentation full text](https://api.telgorithm.com/llms-full.txt): Complete text of the API documentation in a single file, for agents that need the whole reference at once. ## Getting started - [Getting Started with Telgorithm's APIs](https://www.telgorithm.com/getting-started): Our developer-friendly SMS APIs are quick and easy to integrate with. Get a demo or request a trial today! - [Request a Trial](https://www.telgorithm.com/request-a-trial): Start a risk-free, pay-as-you-go trial with our SMS & MMS APIs today. Request a trial to find out if you’re eligible to sign up. - [Premium Customer Support](https://www.telgorithm.com/premium-customer-support): With A2P text messaging compliance regulations and requirements constantly evolving, businesses need a messaging API provider that can offer hands-on guidance, expertise, and support. ## Guides - [A2P 10DLC Ultimate Guide & Resources](https://www.telgorithm.com/a2p-10dlc-guide): Learn everything you need to know about A2P 10DLC to master A2P messaging and set your business up for success. - [10DLC Ecosystem Explained: Streamline SMS Compliance with Telgorithm](https://www.telgorithm.com/10dlc-ecosystem-overview): Explore Telgorithm’s guide to the 10DLC ecosystem and learn how we simplify compliance, speed up campaign approvals, and improve message deliverability. - [How to Choose an A2P 10DLC Provider (Step-by-Step Guide)](https://www.telgorithm.com/news/how-to-choose-an-a2p-10dlc-provider-step-by-step-guide): Searching for a messaging provider is a lot like speed dating. You have to evaluate its attractiveness (or UX), stability (or platform stability), compatibility (or collaboration and feedback incorporation)... - [CSP Registration Guide for A2P 10DLC | Benefits, Setup & Migration](https://www.telgorithm.com/news/the-complete-guide-to-csp-registration-in-a2p-10dlc-with-resources-for-every-step): Learn how to register as a Campaign Service Provider (CSP), why it matters, and how to manage migrations, compliance, and control in A2P 10DLC. - [10DLC Compliance Checklist: How to Fix (Most) Rejected 10DLC Campaigns](https://www.telgorithm.com/news/10dlc-compliance-checklist): Struggling with A2P 10DLC Campaign rejections? Learn how to help customers navigate SMS & MMS compliance with this quick guide from Telgorithm, the 10DLC experts. - [Short Code vs Local vs Toll-Free Number: Which Should I Use and Why?](https://www.telgorithm.com/news/short-code-vs-local-vs-toll-free-number-which-should-i-use-and-why): Before A2P messaging, toll-free numbers and short-code numbers had a leg up on local phone numbers. Like a fast lane for cars, toll-free and short-code allowed messaging traffic to move at a much higher... - [How Much Does 10DLC SMS Cost? Full Breakdown of A2P Messaging Fees](https://www.telgorithm.com/news/how-much-does-10dlc-sms-cost-a-complete-breakdown-for-isvs): How much does 10DLC SMS really cost? Learn how messaging rates, carrier fees, registration, phone numbers—and failed messages from throughput limits—impact total A2P SMS spend. - [Campaign types and what they mean for your throughput](https://www.telgorithm.com/news/campaign-types-and-what-they-mean-for-your-throughput): The Campaign Registry (TCR) has created two general categories for messaging campaigns: 1) Standard Campaign Type; and, 2) Special Campaign Type. Choosing between these two categories will depend on your use... - [RCS (RBM) Isn’t a Replacement for SMS—Fallback Is Required](https://www.telgorithm.com/news/how-rcs-business-messaging-actually-works-and-the-importance-of-fallback): Over 50% of devices don’t support RCS (RBM). Here’s why fallback to SMS isn’t optional—and why most platforms get it wrong. - [12 A2P 10DLC Acronyms Every ISV Should Know](https://www.telgorithm.com/news/12-a2p-10dlc-acronyms-every-isv-should-know-in-2026): Learn the meaning behind 12 common A2P 10DLC acronyms, including TCR, CSP, DCA, RCS, RBM, SMS, MMS, and more. A quick guide for ISVs and SaaS teams. - [How Your SMS Throughput Fate is Decided for A2P 10DLC](https://www.telgorithm.com/news/how-your-sms-throughput-fate-is-decided-for-a2p-10dlc): Business texting isn’t just for one-on-one conversations with customers. Many brands use it as part of their sales and marketing campaigns and to improve the customer experience — by sending appointment... - [2026 SMS API Provider Assessment Checklist for A2P Messaging Platforms](https://www.telgorithm.com/news/2026-sms-api-provider-assessment-checklist): Evaluating an A2P messaging API in 2026? Use this practical checklist to assess cost visibility, delivery reliability, compliance support, scalability, and long-term risk. ## Customer stories - [Customer Stories | Hear from Telgorithm Customers](https://www.telgorithm.com/customer-stories): Discover how software providers are partnering with Telgorithm to solve A2P 10DLC challenges. Read customer case studies and more. - [Bonzo Migrates to Telgorithm and Reduces Customer Churn](https://www.telgorithm.com/customer-stories/bonzo): Learn how Bonzo, a leading CRM provider for the mortgage industry, dramatically improved SMS deliverability and reduced customer churn by migrating to Telgorithm. Discover their success story, which includes registering over 5,000 active TCR Campaigns, rapid Campaign approval times, and significant cost savings through Telgorithm's Smart Queueing technology. - [BLVD Seamless Migration from Twilio to Telgorithm SMS API](https://www.telgorithm.com/customer-stories/boulevard): Boulevard’s Seamless Migration from Twilio to Telgorithm SMS API for Higher Deliverability and Better Support. - [How Builder Prime Scaled SMS with Telgorithm Messaging API | Telgorithm Customer Testimonial](https://www.telgorithm.com/customer-stories/builder-prime): Jonathan Weinberg, Founder and CEO of Builder Prime, an all-in-one business management platform, shares how his partnership with Telgorithm transformed his business, enhanced customer experience on his software, and streamlined 10DLC compliance with evolving text messaging regulations. - [Why Constant Contact Chose Telgorithm to Power Its 10DLC Messaging | Telgorithm Customer Testimonial](https://www.telgorithm.com/customer-stories/constant-contact): Chief Product Officer, Russ Morton, shares how Telgorithm’s top-tier customer support and high SMS deliverability rates allows his customers to better amplify their reach, improve customer engagement and achieve their business goals on SMS. - [TextSpot Migrates from Twilio to Telgorithm for SMS APIs](https://www.telgorithm.com/customer-stories/textspot): Discover how TextSpot revolutionized their SMS service quality and customer satisfaction by switching from Twilio to Telgorithm. This case study explores the streamlined migration, rapid Campaign approvals, and the reliable partnership that has set a new standard in the 10DLC messaging landscape. ## Glossary - [What are 10-Digit Long Code (10DLC) Numbers?](https://www.telgorithm.com/glossary/10-digit-long-code-10dlc-numbers): 10DLC phone numbers are standard ten-digit phone numbers used for Application-to-Person (A2P) messaging. These numbers can be tailored to any US area code, which adds a local touch to your messages and makes... - [What is 10DLC Compliance?](https://www.telgorithm.com/glossary/10dlc-compliance): 10DLC (10-Digit Long Code) compliance refers to adhering to regulations governing the use of 10-digit phone numbers for Application-to-Person (A2P) messaging. These regulations are set by mobile carriers and... - [What A2P text messaging content is not allowed in the US?](https://www.telgorithm.com/glossary/a2p-messaging-disallowed-content): These A2P messaging categories are a combination of federally illegal as well as content and use-cases that have historically resulted in a high volume of SPAM and consumer complaints. Because of this, the... - [What is Application-to-Person Messaging (A2P) | Telgorithm](https://www.telgorithm.com/glossary/application-to-person-messaging-a2p): A2P messaging refers to sending automated messages from an application to a person's mobile phone. Unlike person-to-person (P2P) messaging, which involves communication between individuals, A2P messaging is... - [What Is Authentication+ in A2P 10DLC Messaging?](https://www.telgorithm.com/glossary/authentication-plus): Authentication+ is an enhanced Brand verification step introduced by The Campaign Registry (TCR) to strengthen the security of A2P 10DLC messaging. Launched in October 2024, this identity verification layer is... - [Automated TCR Registration Via API | Save Time & Money](https://www.telgorithm.com/glossary/automated-10dlc-registration): As early 10DLC adopters, we knew how important it was to make The Campaign Registry (TCR) registration as quick and painless as possible, so we partnered with TCR for an API-based registration called Automated... - [What is Automated Number Porting in A2P Messaging?](https://www.telgorithm.com/glossary/automated-number-porting): Porting or migrating active/existing application-to-person (A2P) phone numbers from one SMS API provider to another is called Number Porting. Automated Number Porting is Telgorithm’s way of enabling businesses... - [What is a Brand on the Campaign Registry (TCR) | Telgorithm](https://www.telgorithm.com/glossary/brand): In A2P 10DLC, Brand refers to the business or organization responsible for sending text messages directly to customers’ mobile phones. As defined by The Campaign Registry (TCR), a Brand is the entity the... - [What Is A Campaign Rejection in A2P 10DLC Messaging?](https://www.telgorithm.com/glossary/brand-and-campaign-rejections): Campaign Rejection refers to the denial of an A2P 10DLC messaging Campaign submission through The Campaign Registry (TCR) by a Direct Connect Aggregator (DCA), due to noncompliance, incomplete information, or... - [What Is 10DLC Brand Verification?](https://www.telgorithm.com/glossary/brand-verification-a2p-10dlc): 10DLC Brand Verification is the process of validating a business entity (the “Brand”) with The Campaign Registry (TCR) as part of the required setup for A2P (Application-to-Person) 10-digit long code... - [What is a Campaign? The Campaign Registry (TCR)](https://www.telgorithm.com/glossary/campaign): On The Campaign Registry (TCR), a Campaign is an A2P 10DLC messaging "use case" that a business or organization registers under a Brand. There are standard use cases, which are generally available to most... - [What is a Campaign Service Provider (CSP) in TCR?](https://www.telgorithm.com/glossary/campaign-service-provider-csp): Campaign Service Providers (CSPs) are the primary users of The Campaign Registry (TCR) and the owners of their registered Brands and Campaigns. CSPs work with multiple Brands (their customers) to create and... - [What is Capping in 10DLC Messaging?](https://www.telgorithm.com/glossary/capping): In A2P 10DLC messaging, capping is a practice where API providers send text messages to carriers (like AT&T and Verizon) at the lowest throughput rate of all Campaigns across all Brands. While this ensures... - [What are Carrier Pass-Through Fees? A2P 10DLC Messaging](https://www.telgorithm.com/glossary/carrier-pass-through-fees): Carrier pass-through fees are costs imposed by wireless providers like T-Mobile, AT&T, and Verizon for transmitting Application-to-Person (A2P) messages. These charges are passed down to Connectivity Partners... - [Connectivity Provider (CNP) | SMS & MMS API Provider](https://www.telgorithm.com/glossary/connectivity-provider-cnp): A Connectivity Provider or Partner (CNP) enables 10DLC messaging services for Campaign Service Providers (CSPs) by supplying an SMS & MMS text messaging API. Telgorithm, Twilio, Bandwidth, and Telnyx are all... - [Conversational RCS Business Messaging](https://www.telgorithm.com/glossary/conversational-rcs-business-messaging): Conversational RCS Business Messaging is a session-based messaging model within RCS Business Messaging (RBM) that enables businesses and customers to exchange unlimited messages during a single active... - [What are Direct Connect Aggregators (DCAs) in 10DLC?](https://www.telgorithm.com/glossary/direct-connect-aggregators-dca): A Direct Connect Aggregator (DCA) is a company acting as an intermediary between businesses and mobile carriers; thus playing a crucial role in the telecommunications ecosystem. - [What is Group MMS Messaging for 10DLC?](https://www.telgorithm.com/glossary/group-messaging): Group messaging refers to the ability to send a single message that multiple participants can receive and respond to within a shared thread. It enables real-time, interactive conversations where each... - [What is Hosted SMS Messaging on A2P Phone Numbers?](https://www.telgorithm.com/glossary/hosted-sms-messaging): Hosted Messaging, also known as Hosted SMS, allows you to either migrate over or enable SMS and MMS text messaging services on your existing application-to-person (A2P) phone numbers. - [What are Local Numbers (10DLC) in A2P Messaging?](https://www.telgorithm.com/glossary/local-numbers-10dlc): Local numbers is another term for 10-digit long code (10DLC) phone numbers. - [What are Long Codes (10DLC)? | Types of A2P SMS Numbers](https://www.telgorithm.com/glossary/long-codes): Long codes is another term for 10-digit long code (10DLC) phone numbers. - [What is Multithreading? | A2P Text Messaging Traffic](https://www.telgorithm.com/glossary/multithread-multithreading): In the context of A2P text messaging, multithreading means sending A2P messaging traffic through two or more messaging API providers simultaneously. By multithreading, companies can stay vendor-agnostic and... - [What is Number Verification to Lookup 10DLC Phone Numbers?](https://www.telgorithm.com/glossary/number-verification): Telgorithm's Number Verification is a lookup API that automatically reviews the phone numbers on your text messaging outbounding list to ensure that they are legitimate and in-service at the time of sending... - [What is Person-to-Person (P2P) Messaging? | Telgorithm](https://www.telgorithm.com/glossary/person-to-person-messaging-p2p): Person-to-Person (P2P) messaging is a way for individuals to communicate via text message, usually for personal or casual purposes. These messages are sent directly from one person to another and are manually... - [What are Rate Limits / Throughput Limitations in 10DLC?](https://www.telgorithm.com/glossary/rate-limit): Rate limit is another way to describe 10DLC throughput limitations. - [What is Rich Business Messaging (RBM)? A2P Messaging](https://www.telgorithm.com/glossary/rbm-rich-business-messaging): Rich Business Messaging (RBM) is a business-focused extension of Rich Communication Services (RCS) that enables companies to deliver interactive, branded, and engaging messages directly to customers. - [RCS Agent](https://www.telgorithm.com/glossary/rcs-agent): An RCS Agent is a verified business identity that allows an organization to send RCS Business Messages (RBM) to customers through the native messaging application on supported mobile devices. Think of an RCS... - [RCS Fallback Explained: How RCS-to-SMS Delivery Works](https://www.telgorithm.com/glossary/rcs-fallback): RCS fallback is the process of delivering a message via A2P SMS or MMS when Rich Communication Services (RCS) Business Messaging is unavailable for the recipient. - [What is Rich Communication Services (RCS)? A2P Messaging](https://www.telgorithm.com/glossary/rcs-rich-communication-services): Rich Communication Services (RCS) is an enhanced messaging protocol that upgrades traditional SMS and MMS for person-to-person (P2P) communication. Designed to offer a more dynamic experience, RCS includes... - [RCS Rich Media Message](https://www.telgorithm.com/glossary/rcs-rich-media-message): A Rich Media Message is an RCS Business Message that goes beyond a text-based Rich Message by adding structured content, media, or advanced interactive elements. They combine the trust of verified business... - [RCS Rich Message](https://www.telgorithm.com/glossary/rcs-rich-message): A Rich Message is a type of RCS Business Messaging (RBM) that allows businesses to send branded, verified text conversations that look and feel like a modern messaging app. Unlike traditional A2P SMS, RCS Rich... - [What is a Reseller in The Campaign Registry?](https://www.telgorithm.com/glossary/reseller): When a messaging API provider registers a business' Brands and Campaigns on The Campaign Registry (TCR) on their behalf, that business is called a Reseller (as opposed to a Campaign Service Provider, or CSP)... - [What is Secondary DCA Campaign Vetting in A2P 10DLC?](https://www.telgorithm.com/glossary/secondary-campaign-vetting): As of late 2024, secondary Campaign vetting was introduced as a new requirement for some Connectivity Partners (CNPs) in the A2P 10-digit long code (10DLC) Campaign approval process, where certain Direct... - [What is Smart Queueing for Managing 10DLC Rate Limits?](https://www.telgorithm.com/glossary/smart-queueing): Smart Queueing is Telgorithm’s patented product feature built for A2P 10DLC text messaging that proactively and automatically manages Carrier rate limits to prevent your customers from ever exceeding a limit... - [What is snowshoeing? | Snowshoeing in SMS Messaging](https://www.telgorithm.com/glossary/snowshoeing): Snowshoeing, in the context of SMS messaging, refers to the practice of distributing similar or identical messages across multiple phone numbers to circumvent message volume limitations and rate limits imposed... - [What is a Sole Proprietor in TCR? | A2P 10DLC](https://www.telgorithm.com/glossary/sole-proprietor-use-case-in-10dlc-sms-mms): In the context of 10DLC messaging, the Sole Proprietor Use Case refers to a specific registration process designed for sole proprietors—or small business owners or individuals who do not possess Employer... - [What is The Campaign Registry (TCR)?](https://www.telgorithm.com/glossary/the-campaign-registry-tcr): The Campaign Registry (TCR) serves as the primary registry vendor that validates businesses and their application-to-person 10-digit long code (10DLC) messaging campaigns, safeguarding mobile users from... - [What is Throughput in A2P? Number of SMS & MMS Messages](https://www.telgorithm.com/glossary/throughput): In Application-to-Person (A2P) text messaging, throughput refers to the number of SMS and MMS messages sent within a specific period of time. Often expressed as throughput per second (TPS), it is a critical... - [What is Time Routing in 10DLC Messaging?](https://www.telgorithm.com/glossary/time-routing): Time Routing is an out-of-the-box product feature via our API that allows you to rescind or “expire” queued SMS & MMS messages per Campaign that no longer need to be sent due to time sensitivity, such as... - [What are Toll-Free Numbers? Three-Digit Landline Codes](https://www.telgorithm.com/glossary/toll-free-numbers): Toll-Free numbers are phone numbers with distinct three-digit codes that can be dialed from landlines at no charge to the person placing the call. Such numbers allow callers to reach businesses and/or... - [What Is a Trust Score in A2P 10DLC Messaging?](https://www.telgorithm.com/glossary/trust-score): Trust Score is a numerical rating (0–100) assigned to a registered Brand during the A2P 10DLC registration process with The Campaign Registry (TCR). This score reflects the perceived reliability and reputation... ## Company - [Service status](https://status.telgorithm.com/): Live platform status and incident history. - [Learn More About Us](https://www.telgorithm.com/about-us): Telgorithm was founded by telecom industry experts with over 20 years of experience seeking to set a new standard for quality and transparency in the space. The new leading API for messaging is here. - [Press](https://www.telgorithm.com/press): Stay up to date on the latest press about Telgorithm - [Contact Us To Learn More](https://www.telgorithm.com/contact-us): Get in touch with one of our A2P experts today to learn how Telgorithm can supercharge your messaging ROI today. Complete our contact form! - [Acceptable Use Policy](https://www.telgorithm.com/acceptable-use-policy): Telgorithm's messaging policy: consent requirements, usage limitations and prohibited content categories for A2P messaging.