Allow monitoring a URL suck as http://wikipedia.org/wiki/λ or http://wikipedia.org/wiki/🍔. It's annoying to manually have to URL-encode URLs and it's hard to see what the “real” URL is in the list when it's all percentage signs and numbers.

Google Sheets integration.
We use the API now with an external Python script polling in data every x minutes to keep our overviews up to date.

Show somewhere on the status page, the SSL Labs grade for the monitored host. It can be get trough the API, like https://api.ssllabs.com/api/v3/analyze?host=updown.io (it could be tested once a day for each host)

Ath the moment SMTP ports may be checked for responsiveness but not for valid connections. Interesting would be:

• check if there is really a SMTP server


• check for STARTTLS


• check for valid certificate / expiring certificate


• check for MTA-STS/DANE

It would be useful to have bulk editing options for the "check interval" and "monitoring locations".

I don't know why, but I always get confused if the far right is the current hour or the far left is the current hour. A mouse-over, tool tip or guide that just says "current hour" or "24 hours ago" would help clarify at a glance.

Give a name to phone numbers! otherwise it's hard to know who they belong to.

I believe the effort to turn you application into an webapp is pretty low (just include the manifest.json into the project root), and that would enable the users to install the website and use as an app.
It would also open some doors for future development:
- Send push notifications from web
- Offline access (yeah, this is kinda weird for you product)
- Improved caching
- Auto-updates straight from web (this is in comparison to native apps)

I would like to have checks which fail when something is there which shouldn't be there. For example a http endpoint which should only be available through https.

I would like to set which Slack Alert Channels (but this idea applies to all notification methods) should be default on or default off.

I have a couple of channels I need just for specific high priority notifications. I don't want them accidentally switched on for every updown.io entry that is added

I like ordering checks by status having the "down" first.
It would be nice, in this view, to have the disabled checks at the bottom of the list.

Bulk option: change the apdex time level, e.g., quickly switch between .5 seconds and 1 second to see difference.

Add screenshots to the reports, so we don't have to setup that with another provider seperatly

I'd like to be able to enter multiple email addresses for the weekly report. For example, certain department managers would like to receive a weekly report of the checks, but not be disturbed every time a check goes up or down.

On the dashboard it would be nice to see the timing to the first response

We would love to be able to post alerts to Google Chat using the incoming webhooks (cf. https://developers.google.com/hangouts/chat/how-tos/webhooks). A similar integration to the one already existing for Slack would be wonderful!

Increase the frequency choice to 1 day

To save time on bookkeeping, add UBL invoices.

At the moment a revoked certificate will show an error on browsers, but will show as "up" by updown.io

I was affected by the following, and didn't receive any notification when the site was inaccessible
https://arstechnica.com/information-technology/2018/03/23000-https-certificates-axed-after-ceo-e-mails-private-keys/