Across the 90 days ending September 09, 2026, HubSpot and Drip recorded 100% uptime with zero major or critical incidents, while ActiveCampaign recorded 99.84% uptime across 3 major or critical incidents totalling 202 minutes of downtime. If you are choosing between the three for marketing automation, the reliability gap is real but small in absolute terms, and the shape of the downtime matters more than the headline percentage.
How do the three compare on 90-day data?
| Service | Uptime | Grade | Major/critical incidents | Total downtime | Average incident | Last incident |
|---|---|---|---|---|---|---|
| ActiveCampaign | 99.84% | B+ | 3 | 202 min | 67 min | 2026-08-05 |
| HubSpot | 100.0% | A+ | 0 | 0 min | 0 min | None in window |
| Drip | 100.0% | A+ | 0 | 0 min | 0 min | None in window |
These figures come from StatusBird's independent 2-minute monitoring over the 90 days ending September 09, 2026. You can see the underlying history on the ActiveCampaign reliability page, the HubSpot reliability page, and the Drip reliability page, and the checking method is described on the methodology page.
Some context helps here. ActiveCampaign's 202 minutes is the highest total in the marketing category for this window. Klaviyo logged 99.89% uptime with a single 146-minute incident on June 12, 2026, so it had fewer interruptions but a longer one. Mailchimp, Omnisend, Attentive, Postscript, and SendGrid all sat at 100% with no major or critical incidents in the same window.
Does 99.84% versus 100% actually matter?
202 minutes is three hours and twenty-two minutes over three months. Spread evenly, that is nothing. Concentrated in the wrong hour, it is a campaign that misses a promotion window or an abandoned-cart sequence that skips a day of orders.
The more useful number is average incident length. ActiveCampaign's three incidents averaged 67 minutes each. That is short enough that a well-configured store recovers without intervention, but long enough that a scheduled send during that window slips. Compare that to Klaviyo's single 146-minute incident: one interruption, but more than twice as long once it hit.
The other thing to hold onto: 100% over 90 days is not a guarantee. It means no major or critical incident was detected in this specific window. The outage index shows how much month-to-month variance there is across all monitored services. August 2026 saw 16 major or critical incidents and 40.4 hours of combined downtime across 9 services. April 2026 saw 20 incidents and 122.1 hours across 11. A service with a clean quarter can still have a bad month.
Which numbers matter for which kind of store?
If your revenue depends on triggered flows
Welcome series, abandoned cart, browse abandonment, post-purchase. These fire continuously, so every minute of downtime is a minute of missed triggers. Incident frequency matters more than length here, because each separate interruption is a separate set of dropped or delayed events. On this measure ActiveCampaign's three incidents are worse than Klaviyo's one, even though Klaviyo's single incident was longer than any individual ActiveCampaign one.
The practical question is what happens to the events that occurred during the outage. Ask your provider directly whether webhook events and API calls received during an incident are queued and replayed after recovery, or dropped. The answer changes your recovery work from "wait" to "manually re-trigger". Write the answer into your runbook so you are not asking during an outage.
If your revenue depends on scheduled campaign sends
Flash sales, drops, weekly newsletters. Here total downtime matters less than whether an outage overlaps your send window. A 67-minute outage at 3am costs you almost nothing. The same outage at 10am on launch day costs you the launch.
Two concrete hedges. First, schedule sends at least 90 minutes before the moment the traffic needs to arrive, so a typical incident of ActiveCampaign's average length has time to clear before your window closes. Second, check the live status of your platform before you hit send on anything time-sensitive: the ActiveCampaign status page, the HubSpot status page, and the Drip status page each show current state from independent checks rather than vendor self-reporting.
If you run the platform as your CRM as well as your email tool
HubSpot in particular tends to hold sales pipeline, contact records, and support context, not just email. An outage there stops more work than a missed newsletter. Its 100% uptime and zero incidents in this window are a point in its favour, but the blast radius when it does fail is wider, so the recovery plan needs to cover more than email. Decide in advance where your team logs customer conversations when the CRM is unreachable, and name the specific spreadsheet or shared doc.
What should you actually do with this data?
Reliability is one input among several. A 0.16 percentage point difference over one quarter is not by itself a reason to migrate a working setup, and migration costs you weeks of flow rebuilding and deliverability warm-up. Use the data to decide how much protection you need, not to pick a winner.
- Keep Shopify's native order notifications enabled. If you have redirected order confirmation and shipping confirmation emails to your marketing platform, a platform outage delays every one of them and generates support tickets. Check Settings, then Notifications, and confirm the built-in confirmations are still active as a fallback.
- Separate transactional from marketing. Route password resets, receipts, and account emails through a dedicated sender rather than your campaign platform, so a marketing outage never touches a customer's ability to complete a purchase.
- Export contacts on a schedule. A weekly CSV export of your list and your suppression list means an extended outage does not leave you with no way to reach customers at all.
- Log the incident date and duration when one hits. Three incidents in a quarter is a pattern worth raising with your account manager. One is not. You need a record to tell the difference.
- Set an alert for the platform itself. The failure mode that costs most is not the outage, it is finding out three hours later because a customer asked why they never got their welcome email.
The short version
HubSpot and Drip came through this 90-day window clean, at 100% uptime with no major or critical incidents. ActiveCampaign came through at 99.84% with three incidents averaging 67 minutes, the highest downtime total in the marketing category for the period. That is a meaningful difference on paper and a minor one in practice for most stores, unless your send windows are tight or your triggered flows carry a large share of revenue.
If you want to know when any of these three has a problem rather than finding out from a customer, StatusBird checks them every two minutes and can alert you by SMS, email, Slack, Teams, or Discord. You can set up monitoring here.