Postscript has been highly reliable recently: StatusBird's independent monitoring recorded 100.0% availability and zero major incidents over the last 90 days.
Numbers alone do not tell you whether to worry, so this post also covers what actually breaks when Postscript has problems and how to get warned early.
What is Postscript?
Postscript is an SMS marketing platform built specifically for Shopify stores. Merchants use it to send text message campaigns, run automated flows like abandoned checkout and shipping updates, grow subscriber lists through popups and checkout opt-ins, and in some cases handle two-way conversational SMS sales. It syncs directly with Shopify order and customer data to trigger messages and build segments.
Postscript uptime and outage history
| Metric (90 days, as of July 2026) | Value |
|---|---|
| Availability | 100.0% |
| Reliability grade | A+ |
| Major incidents | 0 |
| Total major-outage downtime | 0 minutes |
| Average incident duration | n/a |
| Most recent major incident | None in the last 90 days |
| Checks in window | 61,464 |
Among the 10 email and SMS marketing services StatusBird monitors, Postscript ranks number 7 for 90-day availability. See the full ranking of email and SMS marketing tools by reliability.
What happens to your store when Postscript goes down?
When Postscript goes down, SMS campaigns and automated flows stop sending, so abandoned checkout texts, back-in-stock alerts, and shipping notifications silently stop reaching customers. Opt-in popups served by the Postscript script can stop appearing on the storefront, pausing list growth. Inbound replies and two-way conversations go unanswered, and Shopify event syncing can lag, meaning triggers fire late or from stale data after recovery. The storefront and checkout keep working normally.
Typical symptoms during a Postscript outage:
- The Postscript dashboard is unreachable or errors on load
- A scheduled SMS campaign stays queued and never reports sends
- Abandoned checkout and shipping update texts stop firing
- SMS opt-in popups disappear from the storefront
- Inbound customer text replies go unanswered or arrive very late
If you are in the middle of an incident right now, see what to do when Postscript goes down for a step-by-step playbook.
Frequently asked questions
My SMS campaign shows as sending but no one is getting texts. What should I do?
Check status.postscript.io first. If there is an active incident, the campaign is likely queued and will drain once sending recovers, so do not duplicate it or you risk double-texting your list. If the status page is clean, check for carrier filtering issues or a compliance hold on your account instead.
Are abandoned checkout texts lost during a Postscript outage or sent later?
It depends on the incident, but triggers missed entirely during an outage often do not fire retroactively, while queued messages may send late. After recovery, check your flow analytics for a gap, and consider a manual winback send to customers who abandoned checkout during the affected window.
How this data is measured
StatusBird checks Postscript's status every 2 minutes, around the clock, independently of the vendor. The availability figure counts major and critical outages only; minor degradation is excluded so numbers are not skewed by vendors that report small blips near-continuously. Grades run from A+ to F. See the live numbers on the Postscript reliability page and current status on the Postscript status page, or browse all 84 service grades.
Know before your customers do
StatusBird monitors Postscript and 83 other services online stores depend on, plus your own storefront, every 2 minutes. When something goes down you get an SMS, email, or Slack alert with plain-English context, usually before the official status page catches up. Start monitoring free, no card required for the free plan.