PRTG’s bundled SMS paths (built-in SMS Delivery, Custom URL, BulkSMS, GSM modems, Twilio scripts) each come with trade-offs that network admins, IT Operations engineers, Windows sysadmins, and SMB IT managers hit at scale. TextBolt slots in on top using the email notification you already configure. Six SMS challenges teams encounter on PRTG.
PRTG’s SMS Delivery configuration (Setup → System Administration → Notification Delivery → SMS Delivery) ships with a fixed dropdown of supported providers, with BulkSMS as the primary option. If your preferred SMS provider isn’t on the list, the Custom URL workaround is the alternative path. TextBolt slots in on top of your existing PRTG setup through the email notification template, so you don’t pick from a fixed provider list at all our 10DLC business number handles delivery.
Many PRTG shops bypassed the SMS Delivery configuration entirely by setting up an email notification pointed at [phone]@vtext.com or other carrier gateways. AT&T retired txt.att.net in June 2025. T-Mobile took tmomail.net offline in December 2024. Verizon’s vtext.com shutdown completes by March 31, 2027. This shortcut is dead for US recipients.
The Custom URL fallback can’t handle the standard HTTP basic-auth format http://username:password@server. Paessler’s Knowledge Base documents this explicitly: credentials must be passed as query parameters instead. Common configuration issues include placeholder substitution failures (%smsnumber/%smstext not substituted), provider-specific URL encoding gaps, and silent failures when the URL builder strips characters.
Paessler’s KB lists recurring BulkSMS issues: passwords must contain only a-z, A-Z, 0-9 with no whitespace or special characters, HTTPS connections often fail with “Error connecting with SSL,” and authentication errors like “Account Management Item Not Found,” “Password is wrong,” “Authentication Failed,” and “Insufficient SMS Credits” surface frequently. SMB IT managers troubleshooting BulkSMS waste real time on these.
PRTG documents and supports the hardware path: SMSEagle, Braintower, Kentix AlarmManager, Multi-Tech iSMS, and generic GSM modems via mobile phone connection. All require physical hardware at $500-$2,500+ per unit, an active SIM card, physical access for failure replacement, and rack space. Network admins running multi-site PRTG deployments need a modem per site or shared appliance routing.
The community-standard Twilio path for PRTG is the AdamCLarsen/PRTG-TwilioPager GitHub script: PRTG executes the script as an external program from the notification settings, with Twilio API keys in the script’s config file. IT Operations engineers maintaining this inherit the script ownership, API key rotation, Twilio per-message billing, and version-compatibility burden when PRTG updates change notification mechanics.
TextBolt connects PRTG to a registered 10DLC business number through the standard email notification you already know how to configure. No SMS Delivery dropdown, no Custom URL maze, no BulkSMS account, no GSM modem.
Each PRTG sensor alert becomes an SMS within seconds. Critical alerts (host down, link down, SNMP threshold breach, bandwidth saturation) reach the on-call network admin or Windows sysadmin immediately, not buried in an inbox they check next morning.
TextBolt registers your sender identity with The Campaign Registry during onboarding. SMS routes through carrier-approved 10DLC infrastructure with up to 98% delivery rate, a professional toll-free business number, and an exportable audit trail for federal-contractor and regulated PRTG installs.
When a network admin or NOC operator replies “ack,” “rerouting,” or “investigating” by SMS, the reply lands as an email in the inbox of the alert sender. The whole rotation sees acknowledgments without a separate IRM dashboard. Two-way SMS that PRTG’s SMS Delivery never offered.
In a PRTG Notification Template, configure the email recipient as +1[phone]@sendemailtotext.com. PRTG’s standard email notification routes the alert to TextBolt, which converts it to SMS. Skip the SMS Delivery configuration entirely. No Custom URL, no BulkSMS account, no GSM modem.
Skip the BulkSMS auth and SSL issues, the Custom URL placeholder substitution headaches, and the $500-$2,500+ per-site GSM modem cost that network admins running multi-site PRTG otherwise have to manage. TextBolt is cloud-based; one account covers every PRTG core server, remote probe, and hosted instance.
The email notification mechanism is the same in PRTG Network Monitor (on-prem) and PRTG Hosted Monitor (Paessler’s SaaS). The TextBolt gateway address slots into both. Multi-site deployments with remote probes, distributed core servers, or hybrid on-prem + hosted setups all share one TextBolt account.
Up to 98%
SMS Delivery Rate
Two-Way
SMS Replies to Your Inbox
Carrier-Grade
Routes & Infrastructure
Up to 10
Team Members on Shared Account
Hands-on setup takes around 30 minutes. TextBolt handles 10DLC business verification with The Campaign Registry on your behalf, which typically takes 1-2 business days to approve. No BulkSMS account, no Custom URL to debug, no GSM modem to install.
Create your TextBolt account using your work email. Account creation takes about 2 minutes. The account ties to your domain so you can add coworkers later.
Pick a dedicated toll-free number for outbound SMS. $45/year setup fee. The number is the sender ID on every SMS PRTG sends through TextBolt.
Provide your business details during TextBolt onboarding. TextBolt handles 10DLC business and campaign registration with The Campaign Registry on your behalf, so you don’t manage the registration process yourself. Business verification typically takes 1-2 business days. Once approved, your number is enabled for compliant business SMS.
In PRTG, go to Setup → Account Settings → Notification Templates. Create or edit a template with “Send Email” enabled and the recipient as +15551234567@sendemailtotext.com using the engineer’s actual phone. Save and assign to sensors.
Use PRTG’s notification test (the bell icon in Account Settings → Notifications) or pause and unpause a sensor to fire a real alert. The SMS should land within seconds. Check the TextBolt delivery log to confirm.
Invite the rest of your network and IT Ops rotation to the shared TextBolt account. Add per-engineer notification templates pointing at their TextBolt-bound recipient. Use PRTG’s notification triggers and dependencies to route alerts to the right rotation member.

Create a Notification Template with “Send Email” enabled, recipient set to +1[phone]@sendemailtotext.com. Assign the template to sensors via notification triggers. PRTG’s standard email notification routes through to TextBolt. No SMS Delivery dropdown, no Custom URL, no BulkSMS configuration.
Decommission the BulkSMS or Custom URL configuration in Setup → System Administration → Notification Delivery. Reroute SMS-bound notifications through the Email path with the TextBolt gateway address. Same notification triggers, same dependencies, same sensor assignments. The BulkSMS account, SSL errors, and password character restrictions all go away.
Disable the GSM modem in PRTG, or remove the PRTG-TwilioPager script from the “Execute a Program” notification action. Switch the notification template to email mode pointing at the TextBolt gateway. Decommission the modem hardware, return the SIM, and delete the Twilio account. Same alert flow, but the hardware cost and script maintenance go away.
Six common PRTG monitoring categories where SMS to the on-call network admin or Windows sysadmin replaces BulkSMS auth headaches, GSM modem hardware, or a dead carrier gateway.
Link-down events, switch port failures, packet loss thresholds, latency spikes, and SNMP traps via PRTG’s SNMP, ICMP, and NetFlow sensors. Network admins get SMS the moment a circuit, interface, or upstream provider degrades. PRTG’s strongest historical use case.
Host-down events, CPU saturation, memory pressure, disk-full thresholds, and Windows service alerts via PRTG’s WMI, SSH, and Performance Counter sensors. Windows sysadmins and IT Operations engineers get SMS when a critical server crosses a threshold.
NetFlow, sFlow, jFlow, and IPFIX sensors detect bandwidth saturation, top-talkers, and unexpected traffic patterns. SMB IT managers get SMS for circuit saturation events that often precede downtime.
PRTG’s cloud sensors (AWS CloudWatch, Azure Monitor, Microsoft 365 service health) detect cloud-side incidents: instance failures, autoscaling events, and managed-service disruptions. IT Operations engineers running hybrid cloud get SMS without needing a separate cloud-monitoring SaaS.
Switches, routers, UPS units, printers, environmental sensors, and any SNMP-capable device monitored via PRTG. Network admins and Windows sysadmins running data centers and branch offices get SMS for UPS battery alerts, switch port flaps, and printer error states.
PRTG remote probes deployed in branch offices, data centers, and customer sites all route SMS through one shared TextBolt account. Network admins running multi-site PRTG skip per-site GSM modems and consolidate the SMS path. SMB IT managers serving multiple clients use one TextBolt account across all probes.

10DLC Compliant
Carrier Approved
Complete Audit Trail
Three common paths for adding SMS to PRTG. BulkSMS via SMS Delivery has documented bugs. GSM modem hardware costs real money per site. TextBolt slots into the email notification PRTG already supports.
SMS provider account plus credits
PRTG’s built-in SMS Delivery configuration with BulkSMS as the primary native option. Documented auth issues, SSL errors, password character restrictions, and “Insufficient SMS Credits” events.
Recommended
$49/month with multi-user access for up to 10 team members (Standard plan)
Email-to-SMS gateway. Address a PRTG email notification at +1[phone]@sendemailtotext.com. Skip the SMS Delivery configuration entirely. Now compliant, audit-trailed, two-way.
$500-$2,500+ per modem
SMSEagle, Multi-Tech iSMS, Braintower, Kentix AlarmManager, or generic GSM modem with mobile phone connection. Industrial-grade SMS, but every site needs its own modem and SIM card.
Three ways customers route SMS through PRTG with TextBolt: ditching the GSM modem, working around BulkSMS auth issues, and avoiding the Custom URL credential limitation.
The numbers that matter when wiring SMS into a PRTG monitoring stack.
Up to 98%
SMS Delivery Rate
30 min
End-to-End Setup
$49/mo
Standard Plan, 10 Users
4.4★
Workspace Marketplace (493 reviews)
Yes, but with friction. PRTG’s SMS Delivery configuration (Setup → System Administration → Notification Delivery) supports a hardcoded list of providers led by BulkSMS, plus a Custom URL fallback for unsupported providers. PRTG also supports GSM modem hardware paths (SMSEagle, Multi-Tech, generic modems). All three paths have known issues: BulkSMS auth and SSL errors, Custom URL format limitations, and per-site modem hardware cost. The cleaner path is to skip SMS Delivery entirely and use a standard email notification addressed at the TextBolt gateway.
Paessler’s Knowledge Base documents recurring BulkSMS issues: passwords must contain only a-z, A-Z, 0-9 characters with no whitespace, HTTPS connections often fail with “Error connecting with SSL,” and authentication errors like “Account Management Item Not Found,” “Password is wrong,” “Authentication Failed,” and “Insufficient SMS Credits” appear frequently. These force network admins and SMB IT managers to debug the integration repeatedly instead of trusting the SMS path.
No. PRTG documents and supports the GSM modem path (SMSEagle, Multi-Tech iSMS, Braintower, Kentix AlarmManager), but each modem costs $500-$2,500+ per site, requires a SIM card, and demands physical access for failure replacement. TextBolt is cloud-based: one shared account covers every PRTG core server, remote probe, and Hosted Monitor instance with no modem hardware in any rack.
Yes. The integration uses PRTG’s standard email notification (Setup → Notification Templates → Send Email). Set the recipient to +1[phone]@sendemailtotext.com. PRTG’s standard SMTP-based email delivery routes the alert to TextBolt, which converts it to SMS. Existing notification triggers, dependencies, sensor assignments, and notification schedules all work unchanged.
PRTG’s Custom URL workaround was designed for SMS providers not in the native dropdown. It can’t handle http://user:pass@server format and forces credentials as query parameters with provider-specific quirks. Placeholder substitution (%smsnumber, %smstext) sometimes fails silently. TextBolt skips Custom URL entirely by using PRTG’s standard email notification path. Email notifications already work in every PRTG installation; no Custom URL configuration is needed.
Yes. TextBolt registers your sender identity with The Campaign Registry during onboarding so SMS routes through carrier-approved 10DLC infrastructure. This satisfies FCC business SMS requirements and produces an exportable audit trail for federal-contractor and regulated PRTG installs.
Yes. When a network admin or NOC operator replies “ack,” “rerouting,” or any text to a TextBolt-sent SMS, the reply lands as an email in the inbox of the alert sender. The whole rotation sees acknowledgments without logging into the PRTG web UI. Two-way SMS that PRTG’s native SMS Delivery never supported.
Yes. The email notification mechanism is consistent across PRTG Network Monitor (on-prem Windows-based core server) and PRTG Hosted Monitor (Paessler’s cloud SaaS). The TextBolt gateway address slots into both. Multi-site deployments with remote probes, distributed core servers, and hybrid on-prem + hosted setups all share one TextBolt account.
Basic $29/month (500 credits, single user), Standard $49/month (1,000 credits, up to 10 team members), Professional $99/month (2,500 credits, up to 10 team members), Enterprise custom (5,000+ credits). $45/year setup fee. Annual plans 20% off. Compares favorably to per-site GSM modem hardware ($500-$2,500+ each) and BulkSMS per-credit billing.
About 30 minutes of hands-on configuration: account creation, toll-free number selection, and configuring a PRTG Notification Template with the TextBolt gateway address. TextBolt handles 10DLC business verification with The Campaign Registry on your behalf, which typically takes 1-2 business days to approve. Once the carriers approve your number, trigger a test alert and the first SMS lands in seconds.
Reach Network Admins and Windows Sysadmins Without BulkSMS or a Modem
Send SMS from any PRTG sensor in about 30 minutes. Address a standard email notification at the TextBolt gateway and your existing notification triggers and templates keep working, now compliant and two-way.