Connect Slack and Mailersend to power automations.

Trigger from one app, act on another, with a thinking brain in the middle. Build it in plain English. Approve from your phone.

When this happens · Trigger

Do this · Action

Build an automation Browse templates

Supported Triggers and Actions

Notis builds workflows that link Slack to Mailersend. A trigger fires from one place; an action lands in another.

Slack triggers

Mailersend actions

New Channel Created Trigger

Triggered when a new channel is created in Slack.

TriggerInstant

Create Sending Domain

Tool to add a new sending domain to mailersend. use when you need to register and configure a domain before sending emails.

ActionInstant

Channel Message Received

Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.

TriggerInstant

Create SMTP User

Tool to create a new smtp user. use after domain setup to obtain smtp credentials.

ActionInstant

Direct Message Received

Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.

TriggerInstant

Create API Token

Tool to create a new api token. use when you need to generate a token with specific permissions in mailersend.

ActionInstant

Message Reaction Added

Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.

TriggerInstant

Create Webhook

Tool to create a new webhook for a mailersend domain. use after you have a domain id and need to receive event notifications like sent, delivered, opened, etc.

ActionInstant

Message Reaction Removed

Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.

TriggerInstant

Delete Webhook

Tool to delete an existing webhook. use when the webhook is no longer needed. returns empty response on successful deletion (http 204).

ActionInstant

Reaction Added Trigger

DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.

TriggerInstant

Get API Quota

Tool to retrieve current api usage quota. use when monitoring api rate limits to avoid exceeding allowed calls.

ActionInstant

Reaction Removed Trigger

DEPRECATED: use `SLACK_MESSAGE_REACTION_REMOVED` instead. Triggered when a reaction is removed from a message.

TriggerInstant

Get Domain

Tool to fetch information for a specific sending domain. use when you need to verify domain status and dns configuration after setup or changes.

ActionInstant

New Bot Message Received Trigger

DEPRECATED: use `SLACK_CHANNEL_MESSAGE_RECEIVED` with `is_bot_message=true` instead. Triggered when a new bot message is posted to a Slack channel.

TriggerInstant

List Domain Recipients

Tool to list recipients for a domain. use after obtaining the domain id to view recipients with optional pagination.

ActionInstant

Trigger Types

Four ways to start an automation.

A trigger is the event that kicks a workflow off. Notis supports four kinds: an event in a connected app, an inbound webhook, a recurring schedule, and soon, your own database.

Integration triggers

Fire when something happens inside a connected app. New Notion page, Stripe charge, Linear issue: any of 1,000+ apps can start a workflow.

New Notion pageStripe chargeCalendar event

Webhook triggers

A unique URL per workflow. Anything that can send an HTTP POST can start an automation, including no-code tools that speak webhooks.

Any HTTP POSTCustom backendIoT event

Works with

ZapierPipedream

Most used

Recurring triggers

Cron-style schedules run a workflow on the clock. Daily standups, hourly syncs, business-hours-only digests: the workhorse of Notis.

Daily · 8:00HourlyWeekdays only

Coming soon

Database triggers

Watch a row, query, or threshold in your own database and fire the moment the data changes. Row inserted, value crosses a limit, query starts matching.

Row insertedValue > limitQuery match

Why AI automation

Classic automation breaks. AI adapts.

Same triggers and actions, smarter middle. AI handles the fuzziness that breaks traditional Zapier-style workflows the moment a field gets renamed.

Classic automationAI automation

Cost

$ · pay per run

$$ · AI models per run

Reliability

Breaks on schema change

Adapts to format changes

Setup

Click 8 dropdowns

Describe it in English

Handles fuzzy

Hard-coded fields only

Reads intent, summarises

Human in loop

Bolted on

Built in · approval inbox

Maintenance

You own every break

Self-heals · we own it

Ease of use

Describe it. Notis builds it.

Skip the visual builder. Tell Notis what you want, in plain English. It writes the workflow, you review and deploy.

You · in the Notis Builder

NEW

“When a row gets added to the Q4 OKRs Notion database and the status is Blocked, send a Telegram message to the owner with a summary of what's blocking, and ping me if there's no reply within 24 hours.”

Notis built this automation:

TriggerRow added to "Q4 OKRs"

Condition✦Status = "Blocked"

AI step✦Summarise the blocker in plain English

ActionDM the row owner with summary

Timeout✦No reply in 24h → ping you

Observability

Watch every run.

Notis Desktop is Mission Control for your AI automations. See every run, replay, edit, or rewind. Set approval gates so Notis pauses before destructive actions.