SMS alert guides for Canada: alarm texts people read and trust
These SMS alert guides help Canadian teams get alarms off email and onto the right cellphone as short, clear texts. Each one covers one problem: texts that run long, get blocked, flood the phone or reach the wrong person. Every guide ends with steps you can follow today.
7-day free trial, 15 message creditsCard required for verificationNo charge for 7 daysEmail reminder before billing
An alert email from zabbix@noc.example.ca arrives. The Welco rule “Nights: severity High or Disaster” trims it, and On-call network admin gets one text: “Welco: [branch-rtr-3] Unavailable by ping, severity High at 4:26 AM. Reply STOP to opt out.”
On-call network admin received: Welco: [branch-rtr-3] Unavailable by ping, severity High at 4:26 AM. Reply STOP to opt out.
Who these guides are for
They are written for the people who own the alarms, not for developers. If you run a plant, a municipal building or a small IT team anywhere in Canada, you are in the right place. Each industry we serve has its own page as well.
- Plant and municipal water operators whose SCADA or PLC alarms need to reach the operator on call at night.
- IT and network admins who want server and backup alerts on their phone without a big on-call tool.
- Facility managers who need door, generator and HVAC alarms by text from a building system.
- Office managers and owners who approve the spend and want to know how it works in plain words.
Why alert texts go wrong today
Most alarm systems were built to send email. Turning that email into a useful text is where things break. The same few problems show up again and again.
The free carrier path closed
Many systems used carrier addresses like 4165550123@txt.bell.ca to text a phone. Bell shut its Text via Email service at the end of 2025, and Rogers customers reported the same loss back in mid-2023. South of the border, AT&T has ended its gateway, and Verizon's will be gone by March 31, 2027. Our carrier shutdown guide has the fix.
Texts that are too long or too many
Alarm emails are long, so they split into several texts and cost more. A single fault can also fire dozens of alarms, which buries the one that matters.
Texts that never arrive
Canadian and US networks filter texts that look like spam, and landlines can't receive texts at all. A number that replied STOP gets nothing until the person opts back in. None of these failures make noise, so they are easy to miss.
Alerts with no clear owner
When every alarm goes to every phone, each person assumes someone else is on it. Night alarms wake people who can't act, while the person on duty gets lost in the noise. A clear owner for each shift fixes most of this. Teams leaving Opsgenie can follow our Opsgenie shutdown plan to move each alert.
Do-it-yourself texting got harder
Sending your own business texts from a toll-free number now means verifying it first, and one verification covers both Canadian and US phones. US local numbers also need 10DLC registration. That paperwork is new for many teams, and an unverified number can be blocked.
How Welco turns an alarm email into a text
The guides below build on these three steps. Setup needs no software and no hardware.
Sign up and verify your business
Welco checks every business before it can send, using your Canadian business number. You do this once, and Welco handles the number verification North American networks require.
Invite staff and get a YES from each
Send an invite to the staff who should get alerts. Each person opens the join page, enters their own cellphone number and replies YES before any alert reaches them.
Point the alarm email at your Welco address
Change one email address in your system. Each alert then reaches the right phone as a short text that starts with
Welco:.
Put a guide into practice today
Sign up, point one alarm at Welco and see the text on your phone.
7-day free trial, 15 message creditsCard required for verificationNo charge for 7 daysEmail reminder before billing
All SMS alert guides
Pick the guide that matches the problem in front of you. Each one stands on its own. Team stories are collected on the Welco blog.
- Alert text best practicesAlert SMS best practices for Canadian plant, IT and facility teams: which alarms earn a text, who gets them, when, and how to test the path end to end.
- Write short alertsCanadian alert emails run long and texts have a character limit.
- On-call basicsNew to on-call in Canada? Learn how rotations, shifts and handoffs work, and how to send night, weekend and stat holiday alert texts to the right phone.
- Prevent alarm floodsOne hydro blip can fire dozens of alarms and bury the phone.
- Why alert texts get blockedAlert texts blocked as spam in Canada? See which words, links and habits trip carrier filters, and how to reword alarm templates so texts reach the phone.
- Landlines and alertsCan a Canadian landline receive a text alert? No.
- SMS segments explainedHow the 160 character SMS limit works for Canadian alerts: when a text splits, why one emoji, ° or French accent cuts it to 70, and how to keep it short.
- Toll-free verificationToll free verification explained for Canadian teams that text alerts: the dated rules, what reviewers ask for, how long it takes and who files it for you.
- 10DLC explained10DLC explained for Canadian teams: what this US brand and campaign registration means, when it touches your alarm texts and how to skip the filing.
- Opsgenie shutdownAtlassian shuts Opsgenie down on April 5, 2027.
Find the right guide for your problem
Match what you see on the phone to the guide that fixes it.
One alarm arrives as three or four texts
- Likely cause
- The email is too long or has a special character
- Read this guide
- Write alerts that fit one text
The bill is higher than the alarm count
- Likely cause
- Long alerts split into several segments
- Read this guide
- SMS segments explained
The phone buzzes 40 times in one outage
- Likely cause
- One fault fires many alarms at once
- Read this guide
- Prevent alarm floods
Some alerts never show up
- Likely cause
- The network filtered the words as spam
- Read this guide
- Why alert texts get blocked
One person never gets anything
- Likely cause
- The number is a landline or desk phone
- Read this guide
- Landlines and alert texts
Night alarms reach the whole team
- Likely cause
- No clear owner for each shift
- Read this guide
- On-call routing basics
Staff mute the thread and read texts in the morning
- Likely cause
- Too many alarms are sent as texts
- Read this guide
- Alert text best practices
Your own SMS script or module stopped sending
- Likely cause
- The local number was never registered
- Read this guide
- 10DLC for alert texts
Texts from your toll-free number are rejected
- Likely cause
- The number has not passed its review
- Read this guide
- Toll-free verification explained
Your team pages through Opsgenie today
- Likely cause
- Atlassian is retiring the product
- Read this guide
- Opsgenie shutdown guide
Your first week of alert texting, in order
New to alarm texts? Work through these in order. Each line matches one of the guides above.
0 of 7 done
What a good alert text looks like
Each of these names the source, the problem and the time in one short text. The guides and our SMS alert templates show how to get yours to look the same.
- Water plant alarm: Welco: [Pump Station 2] Well 3 level LOW LOW alarm at 1:58 PM. Reply STOP to opt out.
- Server alert: Welco: [Server] Host DOWN - db-01 (10.5.160.9) at 3:12 AM. Reply STOP to opt out.
- Urgent voicemail: Welco: New voicemail on Tech Urgency Line from (231) 555-0100, 0:36. Reply STOP to opt out.
Welco features the guides use
These settings come up across the guides. Each links to its own page, and the full feature list has the rest.
One-text alerts
Cut a long alarm email down to the lines that matter, so it fits one text.
On-call and after-hours routing
Send each alert to different phones by time of day and day of week.
Alarm flood control
Limit a burst of alarms so the on-call phone stays readable.
Delivery reports
See in plain English why a text didn't arrive, such as a landline or a phone that is off.
Test mode
Try a new setup without sending a text or using credits.
How these guides are written and checked
Each guide starts from one alert problem that plant, IT and facility teams run into. The examples follow the shape of real alarm emails, with made-up names and values. We show the raw email next to the text it becomes, so you can see what was cut and why.
Rakesh Patel, Welco's founder, reviews every guide before it goes live. The last review date sits at the top of each one. Carrier rules, the Bell, AT&T and Verizon dates and the Opsgenie timeline each link to their public source.
We also say what Welco does not do. Where a team needs phone calls, escalation chains or schedules, the guide says so and points to the tools built for that.
Frequently asked questions
Which guide should I read first?
Do these guides only apply if I use Welco?
Are the North American texting rules in these guides up to date?
Can I follow a guide without changing my alarm system?
Who reviews these SMS alert guides?
How do my staff start getting alert texts?
What does it cost to try the advice in these guides with Welco?
Why do the toll-free and 10DLC guides matter in Canada?
Turn what you read here into working alarm texts
Point one alarm email at Welco and see the result on your phone.
7-day free trial, 15 message creditsCard required for verificationNo charge for 7 daysEmail reminder before billing