Integrations
It works where your team already is.
Promo Engine is where the work gets decided. It does not ask anyone to move. When something lands on a person's list, Promo Engine says so in the tool your staff already have open, and it turns up in the calendar they already look at.
Where it tells you
Where Promo Engine tells you
Pick one. In Slack each person gets their own message. Everyone gets an email either way, so a church that connects nothing still gets told.
Slack
The biggest single answer when we asked, and the one churches most often leave. Free plans keep 90 days. Added once with a button, and then each person on the team gets their own message rather than a channel post.
Google Chat
Free with Google for Nonprofits, and where most of the churches leaving Slack said they went.
Microsoft Teams
For churches already on Microsoft 365. Promo Engine uses the Workflows webhook, since Microsoft retired the old connectors in May 2026.
Anything else
One address covers Trello, Notion, Basecamp, BAND, NiftyPM, or Zapier in front of whatever you run. If it takes an incoming webhook, Promo Engine can post to it.
Promo Engine sends and nothing else. It never reads your messages, and it never sends anything to a member of your church. It writes into nothing else, and reads only the calendar below.
The calendar
And your own calendar
Everyone subscribes once to their own work. It keeps itself up to date and needs no account linking, because it is a feed rather than something writing into your calendar.
With the rest of Engine
Two more, when they open
Adding a guest to the Mailchimp or Clearstream list you already run comes with People, and reading the giving and spending file you already export comes with Operations. Both are coming, on the same account, and your Promo Engine account becomes an Engine account when they do.
Alongside
What you already run
Promo Engine does not replace your church management system, your giving platform or your website. Tell it what you use and it stops asking you twice.
Church system
Giving and accounting
Team messaging
Boards and docs
Email and texting
Everything else
Not on the list? Anything with an incoming webhook works today, and the list grows as churches tell us what they use.
Set your church up this week
Connect one of these during setup. It takes a pasted address and about a minute.