NextOS Texting FAQs

Article 000001814 · Updated Mar 19, 2026 · 10,225 views

Is SMS/MMS HIPAA compliant?

Yes, though our HIPAA guidelines for texting need to be followed.

Are all voice accounts eligible to use the new SMS/MMS feature?

No, the essential package does NOT include SMS/MMS.

Is SMS/MMS HIPAA end-to-end encrypted?

Yes, we have end-to-end encryption for SMS and MMS.

Can I adjust my caller ID for an SMS number?

Caller ID is only available for phone calls, not text messages. Unless saved as a contact, all inbound texts will only show the number.

Why can't I enable SMS on my number?

To better combat texting SPAM, the FCC requires all businesses to register their number before they can text. For more information click here.

For instructions on how to register your number click here.

Is the new SMS/MMS solution available for Essential Tier packages?

No, the account must be Professional, Enterprise, Ultimate, Core, Engage, or Power Suite packages.

Are there limits for sending SMS/MMS messages?

Yes, each license type has a limited number of messages each user can send and receive per month:

Professional - Up to 1000 SMS/MMS messages sent/received per user per month
Enterprise - Up to 2000 SMS/MMS messages sent/received per user per month
Ultimate - Up to 2000 SMS/MMS messages sent/received per user per month
Core - Up to 100 SMS/MMS messages sent/received per user per month
Engage - Up to 250 SMS/MMS messages sent/received per user per month
Power Suite - No limit

Can I increase or remove these limits?

Yes, the NextivaONE Productivity Plugin allows your users to have unlimited SMS/MMS messages sent and received. Contact our sales team for pricing information.

Do messages sent using team numbers with Message Pro count against user limits?

No, messages sent using Message Pro do not count against a user's limits.

Can I send bulk messages through SMS/MMS?

No, there is a maximum of 10 recipients for a single message.

Is there a character limit?

A single message has a character limit of 2000 characters, including spaces. Be aware that some end carriers may split the message into 160-character segments to process it.

Can a user utilize SMS/MMS with a number that is assigned to a Call Flow?

No, the SMS/MMS number must be the primary number associated with the user. We do offer an additional service that allows a team of people to share a single number for texting.

What file formats are supported for MMS?

The currently supported formats are

Image:

.bmp
.gif
.jpg
.jpeg
.png

Audio:

.mp3

Video:

.wav
.mp4

Is there a size limit?

There is a 1MB limit for all attachments sent via MMS.

How long are messages stored for?

Currently, SMS/MMS messages are stored indefinitely.

Does SMS/MMS support shortcodes?

We support receiving messages from shortcodes, but cannot guarantee outbound messages will be delivered to shortcodes.

Can I text an international number?

Not at this time, but we are working to enable this feature in the future.

Still need help with this?

Contact support