Transactional SMS API
Enjoy the over 98% open rate of transactional SMS with RockSender’s SMS API*. Enhance the customer
experience by sending high-volume, toll-free text messages using a unique and recognizable phone
number.
Deliver all types of transactional SMS messages
Remind clients and patients about
upcoming appointments and improve
late and no-show rates.
Keep customers in the know about
payment and billing activity with a
quick, convenient SMS.
Reassure customers that their order
has been received with an order
confirmation SMS.
Let customers know immediately
about potential security breaches or
unauthorized use of their accounts.
Make your app more secure with one-
time password and 2-factor
authentication text messages.
Keep customers updated about the
status of their order by telling them
when its shipped, out for delivery and
delivered.
Reach more customers
with transactional
messaging
Improve the customer journey with an additional
communication channel and send timely SMS messages
directly to recipients’ phone numbers.
Multiple sending configurations
Send qualified SMS text messages to opt-in recipients, triggered by their actions or your email flow. Automatically stop sending when
they opt out.
Customize messages to fit
your brand
Your brand is your most valuable asset—make it shine while
increasing customer engagement with pre-made templates,
GIFs and images.
curl -X POST \
https://api.mailersend.com/v1/sms \
-H 'Content-Type: application/json' \
-H 'X-Requested-With: XMLHttpRequest' \
-H 'Authorization: Bearer {place your token here without brackets}' \
-d '{
"from": "+18332552485",
"to": [
"+12345678900",
],
"text": "This is just a friendly hello"
}'
Developer-friendly
resources
Start to send and receive SMS in minutes with our regularly updated
SDK libraries, low-code/no-code integrations and comprehensive
SMS API documentation.
Spark conversations
Take customer support to the next level by allowing recipients
to reply and engage in conversations via SMS.
Easily scale sendings with
bulk transactional SMS
Optimize your sendings and preserve your API quota by
scheduling transactional text messages with the bulk SMS
endpoint.
Transactional SMS integrations
Easily connect other web apps with RockSender so they
seamlessly work together to share information,
automate workflows and enhance your customer experience.
Plus, the same great RockSender features:
Manage multiple phone numbers from
your API, keeping suppressions and
templates separate.
View your activity in real-time to gain
insights about SMS delivery and recipient
activity and make adjustments when
needed.
Effortlessly manage each user and their
level of access to your emails, SMS
activity or individual phone numbers.
Frequently Asked Questions
Enrich your customer communication with SMS
notifications
Get started with real-time SMS service for appointment reminders, two-factor authentication, time-sensitive
notifications, service alerts, booking/order confirmation, and more using our REST API.