# SMS API Reviews 2026. Verified Reviews, Pros & Cons | Capterra > Is SMS API the right SMS Marketing solution for you? Explore 34 verified user reviews from people in industries like yours to make a confident choice. Source: https://www.capterra.com/p/147248/SMS-Notify/reviews --- SMS API 4.7 (34) [View alternatives](https://www.capterra.com/p/147248/SMS-Notify/alternatives/) Provider data verified by our Software Research team, and reviews moderated by our Reviews Verification team. [Learn more](https://www.capterra.com/our-story/) * * * Last updated March 13th, 2026 # Reviews of SMS API Ease of use 4.9 Customer Service 4.6 ## Pros and Cons in Reviews RH Robert H Lead ProgrammerComputer Software, 2 - 10 employeesUsed the software for: More than 2 years. “I was able to quickly add the API to my software package allowing my customers to send texts and receive appointment confirmations. “ July 25, 2024 KC Katie C AdminMarketing and Advertising, 2 - 10 employeesUsed the software for: 1-2 years. “We have been a customer of Esendex since 2015 and have not had any issues with the carrier service, deliverability, customer service team, or any other pertinent parts of day to day operation.“ July 25, 2024 MH Maureen H Sr PrincipalElectrical/Electronic Manufacturing, 501 - 1,000 employeesUsed the software for: More than 2 years. “Customer service is very responsive and provides thorough explanations.“ August 14, 2024 ## Showing most helpful reviews Showing 1-25 of 34 Reviews Sort by: Most Helpful Rating Company Size Reviewer's Role Length of Use Frequency of Use VR Verified Reviewer industrial engineer Financial Services Used the software for: 6-12 months ### "SMS Notify! BA" April 23, 2022 5.0 I like that the application does not ask for an extra fee other than my use. Pros The application has a very comfortable and simple use. It is an application for cleaning and improving data. Cons Slightly more expensive than other competing apps. Review Source MF Martin F. CEO Information Services Used the software for: 2+ years ### "SMS Text messaging for our customer service." August 13, 2024 5.0 Good experience with customer service. The API is simple to use. Pros Simple interface. Ease of use. Good customer service. Cons Originally the account management website during the transition from CDYNE to Esendex was a bit confusing, but I think that has bee corrected now. Switched from [Clickatell](https://www.capterra.com/p/175976/Clickatell-Touch/) They had terrible customer service. One evening I called Clickatell about an online billing issue, and the customer service rep seemed to be on an online roll playing game and was a bit upset I was disturbing him. I immediately switched to CDYNE. Review Source BS Bugra S. Student Computer Software Used the software for: 2+ years ### "BS\_sms notify" April 12, 2022 2.0 I know that market employees use it for communication or discounts. Pros We can send any text to any number we want. Cons this is outdated and outdated technology Review Source RM Rebecka M. IT Director Retail Used the software for: 2+ years ### "Works as expected" August 28, 2024 5.0 It was a good experience, and we are happy we are using it. We are utilizing it to automate emails to our customers to update them on their order status. Pros Works as describe and save us a ton of time from manually sending emails to follow up Cons not sure we have any issues. It really does work as expected Review Source MH Maureen H. Sr Principal Electrical/Electronic Manufacturing Used the software for: 2+ years ### "Excellent service, product recommendation" August 14, 2024 4.0 Customer service is very responsive and provides thorough explanations. Pros Esendex ensures the address data managed by my organization meets postal standards. Cons We had a situation when a user inadvertently enabled the address verification process multiple times in a single day. It resulted in higher than average fees. Ideally, the application would allow users to set a maximum number of transactions per day. That would help eliminate unintentional charges. Review Source KC Katie C. Admin Marketing and Advertising Used the software for: 1-2 years ### "Best SMS Provider " July 25, 2024 5.0 Pros SMS API through Esendex has been an absolute blessing to our business. We developed a CRM software and use the SMS API integration for our users to communicate, mass market, and chat with their customers. We have been a customer of Esendex since 2015 and have not had any issues with the carrier service, deliverability, customer service team, or any other pertinent parts of day to day operation. Our account manager \[sensitive content hidden\] has worked closely with us to get setup properly and remain 10-DLC compliant. \[sensitive content hidden\] has been a blessing as well, helping us understand campaign setup options and models that best suit our business model. We plan on continuing to grow with Esendex for many years to come. Cons If I could ask for any change at all, it would be that we can upload our own personalized recording to play when a customer dials the SMS number. I believe there is not a free option to do this, but nonetheless it would be a nice tool for our business model. (No complaints, just a suggestion) Review Source BF Bridget F. CFO Financial Services Used the software for: 1-2 years ### "Meets most of our basic needs" July 25, 2024 4.0 Pros Fairly easy to use. Clients understand how to use the product. Cons It is fairly expensive. The cost fluctuates up and down, but not always in a linear fashion to number of notifications. The price should go down as the number of notifications go up, but sometimes it is the opposite. For example, we were charged .05 per notification for 13,561 uses, but then .0525 for 23,391 uses. Reason for choosing SMS API Pros outweighed the cons. Review Source BW Bonnie W. President Developer Computer Software Used the software for: 2+ years ### "Esendex use for custom solutions" July 25, 2024 5.0 Pros Integrating the SMS API was quite painless. It takes me under 2 hours to be up and running. This is very helpful when clients to add SMS. they are always amazed at how fat we can get it running. Cons I really don't have anything I don't like Reason for choosing SMS API Ease of use, cost and support from Esendex. I love it that when I call I always get to a person, Review Source Amir K. Director of IT Entertainment Used the software for: 2+ years ### "Good simple API" February 23, 2021 4.0 Pros Simple to use and implementation is fast. Cons Nothing to mention. Simple API for a simple task. Alternatives considered [Twilio](https://www.capterra.com/p/180158/Twilio-Communications-Platform/) Review Source Response from Esendex April 6, 2021 Awesome! Thank you for this review. VR Verified Reviewer Director of IT Hospital & Health Care Used the software for: 6-12 months ### "Great solution for user outreach" March 25, 2020 5.0 Pros The solution was very easy to integrate into our ASP.NET solution and allows us to easily reach our customers. Cons No downside, the software was easy to integrate and use. Review Source Response from Esendex March 26, 2020 Thank you so much for this amazing SMS API review. We appreciate you! DB Doran B. Sr Infrastructure Engineer Hospital & Health Care Used the software for: 2+ years ### "Easiest way to integrate SMS based verification." February 23, 2021 5.0 SMS Notify! allowed us to quickly deploy a password management system with 2FA via SMS text. It has saved us from having to force our users to install yet another app or profile for 2FA/MFA. Pros SMS Notify! is easy to use and set up. No special hardware or software knowledge needed to quickly and easily integrate into the software we use for password manage 2FA. Cons The software is pretty much a set and forget system, in our case and there are no cons or anything to not like about it. Review Source Response from Esendex April 6, 2021 Thank you for this awesome review. We greatly appreciate you and your business. JF Joseph F. Mr Internet Used the software for: Less than 6 months ### "Very intuitive and reliable service" March 25, 2020 5.0 Pros Does what it says it will do. And easy to use api. Cons I did not really have anything negative to say. Alternatives considered [SendGrid](https://www.capterra.com/p/204113/SendGrid/)[Twilio](https://www.capterra.com/p/180158/Twilio-Communications-Platform/) Reason for choosing SMS API My work already had it implemented. Review Source Response from Esendex March 26, 2020 Thank you for such a great review for our SMS API services Joseph. We greatly appreciate you. SC Steve C. President Automotive Used the software for: 2+ years ### "SMS-API has become an essential part of our communications" July 29, 2024 5.0 Pros Easy to setup and integrate into our systems Cons I really cannot think of any negative aspects. Review Source RS Ryan S. Director Consumer Services Used the software for: 2+ years ### "Text review " August 2, 2024 5.0 Great for sending out daily reminders, good for business Pros Sends reminders out to clients with appointments. Decreases the number of no shows Cons Can’t fault it, services works as intended Review Source WL Wenbin L. Senior Staff Engineer, Software Computer Networking Used the software for: Less than 6 months ### "Easy and Good SMS API" August 13, 2024 5.0 Overall is good. The API is easy to use, delivery is kind of promised. Pros The API is straightforward to integrate with various programming languages and platforms. It often comes with well-documented SDKs and libraries, making it easy to get started. Cons SenderId cannot be configured. We do not have a function that country limit access control. Switched from [Twilio](https://www.capterra.com/p/180158/Twilio-Communications-Platform/) Include Esendex as multiple SMS providers Review Source LC Lucas C. Director Telecommunications Used the software for: 2+ years ### "Esendex Appt Management" July 25, 2024 5.0 Pros The ease of use. After the initial set up, it's a "set it and forget it" API that we haven't had to spend any real time managing. Cons Nothing. After integration, the product works as intended and with little management. Review Source TA Tony A. Director of Sales and Support Telecommunications Used the software for: 1-2 years ### "Great Services" July 26, 2024 5.0 Very easy to use - great features - great service Pros Easy to use , Great features, great customer service Cons Nothing - The services gave us everything we needed Review Source RH Robert H. Lead Programmer Computer Software Used the software for: 2+ years ### "Easy to implement" July 25, 2024 5.0 Great. I was able to quickly add the API to my software package allowing my customers to send texts and receive appointment confirmations. Great product and service. Pros I found the API was easy to implement. Good examples and some tech support helped a lot. Cons No complaints. It works. Not much else to say about it. Review Source SJ Steven J. CTO Information Technology and Services Used the software for: 2+ years ### "Good quality product with OK pricing" March 25, 2020 5.0 It works very well, the quality of service is awesome and it's very easy to get up and running quickly. Provisioning DID's was a simple process. Pros Easy to use and get started with. Developed an app quickly to utilize the many features of the API. We also liked the ability to host a short code and they made it easy to implement. Cons The pricing is not as good as some of the other companies in this space. My customers have many options now and we must stay competitive against the larger players. Reason for choosing SMS API At the time, Cdyne was one of the only companies that offered MMS and short code hosting. Most have now caught up with these features. Review Source Response from Esendex March 26, 2020 Thank you Steven for this review! We greatly appreciate your business and look forward to continuously providing you with quality SMS API services. AH Andrew H. Software Developer Financial Services Used the software for: 2+ years ### "SMS Notify" March 25, 2020 5.0 It's been good. The API works and is simple to use. I enjoyed the chat option for support, which I used from time to time. Pros C# API support. No monthly usage requirements. Cons I'd really like a carrier disconnect list, so I can opt out numbers that the carrier will be releasing to the available number queue. It is super convenient and offered by other providers. ex. Vibes and Open Market Reason for choosing SMS API We don't generate the volume required by some gateways. SMS Notify is a good middle ground. Review Source Response from Esendex March 26, 2020 Andrew, your review is very important to us and we appreciate your thoughts. We look forward to continuously providing you with quality SMS API services. BL Bobbi L. Recruiting Supervisor Transportation/Trucking/Railroad Used the software for: 2+ years ### "Texting Made Easy" March 26, 2020 5.0 Pros \-We use SMS Notify as part of our applicant tracking system to correspond with our potential applicants. We use the API to text straight from the applicant's file and the entire team can pick up a conversation at any time so we don't miss a beat even when someone is out of the office. -Pricing is extremely reasonable. -We don't need to contact customer service often, but any time we have, they are quick to respond and are very helpful. Cons I do not know of any cons at this time for SMS Notify! Review Source Response from Esendex March 27, 2020 Thank you so much for this amazing review Bobbi. We appreciate you so much for using our SMS API services. TS Ted S. Owner Computer Software Used the software for: 1-2 years ### "Simple to write API handling classes from Examples, Reliable to use" March 25, 2020 5.0 My business runs on SMS Notify. I never, ever have to think about beyond the initial set up and testing. When markets are out or carriers are slow, they let us know. Pros The best thing about this software are the support team backing it up. Extremely responsive to inquiries & requests. Cons I didn't find any cons. I was able to write the error handling and test classes then push to production in a couple of days Switched from [Bandwidth](https://www.capterra.com/p/167939/Bandwidth/) Customer service team Review Source Response from Esendex March 26, 2020 Thank you for letting us know what you think Ted. We cherish your thoughts and opinion, and will continuously use them to improve our SMS API services. MK Michael K. President Telecommunications Used the software for: 2+ years ### "Great Product" February 22, 2021 5.0 We have always had a very good experience with SMS Notify. Pros We like this product because we can customize it to our needs with ease. We can change the way we use it on the fly which in our business is a great feature. Cons We really haven't found anything that we cannot do. Switched from [Twilio](https://www.capterra.com/p/180158/Twilio-Communications-Platform/) Ease of use and features Review Source Response from Esendex April 6, 2021 Thank you for this amazing review. We greatly appreciate it and your business. AgF Adeshina ganiyat F. Data entry analyst Wholesale Used the software for: Less than 6 months ### "Most accessible " January 6, 2022 4.0 It's really wonderful Pros It's actually great especially when it comes to scheduling messages in other not to forget, you cam schedule messages for a year and would be delivered the due date it's a top notch Cons Apparently, it would be the fact that I can't make a video message though. Review Source RT Randy T. Software Engineer II Information Technology and Services Used the software for: 2+ years ### "IT Review" March 25, 2020 5.0 SMS notify experience is great. Pros Product is super easy to use and the Cdyne Wiki is very helpful. I like that we get constant updates on any maintenances and updates when any delays have been resolved. Uptime is also great. Cons Not missing any features, there are times when its a bit difficult to get a more technical support member but has only been a few times that we needed support. Other than that no issues. Review Source Response from Esendex March 26, 2020 Thank you for taking your time to leave this amazing review about our SMS API Randy. Similar Products Featured