Node List
Digest
Batch multiple alerts & send summary of notifications at a recurring schedule to the user.
The Digest node aggregates multiple triggers into a single, summarized notification sent at a recurring schedule. Some common use cases include sending recommendations or top stories like you get for LinkedIn or Quora, or to send a weekly / daily summary of activities in a company workspace or SaaS application.
You can configure Digest nodes to send notifications on a fixed schedule to all users or a dynamic schedule based on user preferences.
Digest can be configured to be timezone-aware, ensuring that final notifications are sent in user’s preferred timezone and all users receive the digest at a reasonable hour.
Example Use case
A workflow sends a summary of task status changes daily at 7:00 PM for a workflow management tool. In this case, the workflow will batch all triggers for 11 hours (until July 30, 7:00 PM Europe/London) and the email will be sent at the same time as soon as batch is closed.
Let’s understand the batch variable structure with an example of task comments with below notification content.
Here is a list of events triggered in the batched window:
Output variable of the batch will have
This is how you’ll add the variable in your template to render the desired notification content.
You can also test this behaviour via 
Let’s take below example. There are 3 post interactions, 2 comments and 1 like and this is your workflow trigger.
Without transformation, digest output will look like this:
We’ll add 3 variables in data transform node
After data transform node, output variables will contain 3 additional keys generated above. You can use these variables in your template to send the desired message as
How Digest works?
1
Opens batch window
When a workflow reaches the Digest node, it opens a batch until the next digest schedule is triggered. Unlike regular batching, the Digest node operates on a fixed schedule rather than being relative to when the first event is received. Consequently, the next steps following the Digest node will be executed at the fixed schedule, regardless of when triggers are received.
2
Accumulates trigger until the next digest schedule
During the batch period, all events for the same recipient with the same workflow slug are accumulated. A unique batch is created for each recipient.
3
Moves to next workflow step
When the digest schedule is reached, a single notification is sent for each batch. You can configure the number of events retained in the batch using the retain items setting. The digest output structure is similar to the batch output and templates can be edited in the same format as you do for batched alerts. Refer to Using Batch Variables in Templates for more details.
If no triggers are received within a given schedule or if the number of events is below the minimum trigger count, the workflow will exit without executing subsequent steps.
- Trigger: When task status is changed (First task status change is received at Jul 30, 7:00 AM UTC)
- Digest Schedule: Daily at 7:00 PM (in recipient’s timezone)
- Recipient’s Timezone: Europe/London (UTC+1).
Configuring Digest schedule
It is the recurring schedule when an open digest should be closed. This schedule might differ from the time notifications are actually sent. e.g., if you want to send a daily digest summarizing activities from the previous day at 9:00 AM, you would set the Digest schedule to close daily at midnight and follow it with Time Window or Delay node to send the notification at 9:00 AM.Fixed Schedule
Fixed Schedule
Fixed schedule is same for all users and hard coded in the workflow logic. It has 4 inputs:
- Repeat every: Defines the recurrence of the digest, such as every 5 minutes, hourly, daily, etc. It is a combination interval (1,2,3 etc.) and frequency (daily, weekly, monthly, hourly and minutely). e.g. you can set frequencies as:
- every 5 minutes (here, interval is
5withminutelyfrequency) - every hour
- every 3 days
- every weekday
- every 2 weeks on selected days of the week (e.g. Mondays and Wednesdays of the week)
- every month on selected days of the month (e.g. 1st, 3rd, and 5th Mondays of the month or 1st - 5th day of the month)
- every 5 minutes (here, interval is
- Time: Specifies when the digest should be closed for daily, weekly or monthly frequency. The time is always in reference to the timezone selected.
- Timezone: Set the timezone for the Time specified. You can select recipient’s timezone, which will be dynamically calculated for each recipient. You can set recipient timezone in user profile with
$timezonekey in HTTP API oruser.set_timezone()method from your backend or Frontend SDKs. Timezones should be in IANA (TZ identifier) format, such asAmerica/New_York. - Starting from: Defines the starting point for recurring schedule. e.g., if starting from is
2024-07-17 17:00and repeat every is set to daily at 4pm IST, first schedule will be 18th July 4pm IST. You can set a future starting point if you want the first digest to be sent later. Note that in this case, all triggers from when the workflow is activated until the first schedule after the “starting from” time will be included in the first digest. Referred to asdtstartin dynamic schedule expression.
📘 If a recipient’s timezone is not set, it will default to the account timezone specified in the SuprSend dashboard -> Account settings. If no account timezone is set, UTC (Coordinated Universal Time) will be used as the final fallback.
Dynamic Schedule (Send Digest based on user preference)
Dynamic Schedule (Send Digest based on user preference)
The dynamic schedule is dynamically derived from the workflow trigger or recipient profile, allowing for schedules that adjust based on user preferences. It is advisable to store it in recipient profile.If you are sending notification on behalf of your enterprise customers, digest schedule can also come from enterprise level notification preferences. In such cases, you can store the schedule as custom property in tenant settings.
Refer workflow trigger methods to see how dynamic data is passed in different workflow triggers.
| Variable | Type | Description |
|---|---|---|
frequency | string (mandatory) | Choose from one of the below options: minutely hourly daily weekly (mandatory to pass weekdays in this case) weekly_mo2fr (weekly on Monday to Friday) monthly (mandatory to pass monthdays in this case) |
interval | integer (optional) | Interval at which the frequency will repeat. Interval 2 with frequency daily would mean repeat every 2 days. Defaults to 1 if not set. |
weekdays | array[] (mandatory for weekly frequency) | Days of the week for weekly frequency. Pass the first 2 characters of days of the week in an array as ["su", "mo", "tu", "we", "th", "fr", "sa"] |
monthdays | array[map] (mandatory for monthly frequency) | Days of the month for monthly frequency (e.g. 1st, 3rd, and 5th Mondays of the month or 1st - 5th day of the month). Pass as [{"pos": 1, "day": "mo"}], where pos defines the day index and day defines the type of day (can be referred to define the day of the week). e.g., 1st,2nd day of the month will be set as [{"pos": 1, "day": ""},{"pos": 2, "day": ""}]. |
time | string (optional) | Time for daily, weekly, or monthly frequency when the digest will close. Defined in hour and minute as hh:mm. Defaults to 00:00 if not set. |
dtstart | datetime (ISO-8601 format) (optional) | Starting time from which the first schedule will be calculated. Set as 2024-08-01T10:40:50 in ISO-8601 format. Defaults to current_timestamp at the time of setting the schedule if not defined. |
tz_selection | string (optional) | Timezone selection. time and dtstart will both be in this timezone. - Leave empty "" for fixed timezone - Set to "recipient" if the timezone needs to be picked dynamically from user property or trigger data. |
tz_fixed | string (mandatory if "tz_selection": "") | Timezone to pick in case of fixed tz_selection. Add timezone in IANA (TZ identifier) format as America/New_York. Defaults to UTC if not set. |
Passing dynamic schedule for users
You can either pass dynamic schedule in each workflow trigger or a better way to handle is to store it in user profile. You can store any number of schedules in user profile or in tenant properties. It’s a good practice to map the digest schedule to either workflow or category identifier in user profile (If you have multiple notification categories in your system). Refer create user profile section to understand how user properties are set in user profile.Advanced settings
Retain Items
Retain Items
Defines the number of trigger data that will be included in your Digest Batch. You have the option to display either the first n triggers or the last n triggers in your digest output. By default, the first 10 triggers are included. You can customize the number of triggers to any value between 2 and 100.
Min Trigger Count
Min Trigger Count
Specifies the minimum number of triggers required to proceed with the digest. Workflow will exit and the next steps will not be executed if the number of triggers in the digest is less than this count. This is quite useful for cases where you are sending individual alerts and also a digest of all alerts at the end of the day. Now, In this case, if only two alerts are triggered in a day, sending a digest might be unnecessary.
Using Digest (Batch) variables in templates
Batch output variable has 2 type of variables:$batched_eventsarray : All the event properties corresponding to a batched event is appended to this array and can be used in the template in the array format. The number of event properties returned here is limited by retain batch events.$batched_event_count: This count represents the number of events in a batch and is utilized to render the batch count in a template. For instance, you might send a message like,Joe left 5 comments in the last 1 hourwhere 5 corresponds to $batched_event_count.
📘 Please note that Retain items setting doesn’t impact the count, it just limits the number of trigger data returned in
$batched_events array.$batched_events_count and $batched_events array of all properties passed in the event payload as shown below:
Enable batching option in Mock data button on template details page. Once enabled, you’ll start getting $batched_events variable in auto suggestion on typing {{ in template editor. The variables in mock data will be treated as event properties and Event Count will imitate the number of times this event will be triggered in the batch.
Transforming Digest variable output
There can be cases where you need to split the digest output variables into multiple arrays based on keys in your input data. e.g., to send a message likeYou have got 5 comments and 3 likes on your post today where post and likes are interaction_type in your input payload. You can use data transform node and generate relevant variables using JSONNET editor to handle this use case.
Let’s take below example. There are 3 post interactions, 2 comments and 1 like and this is your workflow trigger.
comment_count: to get the count of all interactions whereinteraction_type = commentlike_count: to get the count of all interactions whereinteraction_type = likeall_comments: to fetch all array objects whereinteraction type = comment
You have got {{comment_count}} comments and {{like_count}} likes on your post today.
Some common notification use cases
Sending immediate or digest notification based on user's preference
Sending immediate or digest notification based on user's preference
You can store user preference schedule in their profile and use it in the digest node ->dynamic schedule. To handle immediate alerts in the same flow, add a branch before the digest node to direct users based on their preference to the digest node. If you are using our preference module. You can create separate sub-categories, for immediate, daily or weekly frequency and create different workflows for each of these frequency.
Deliver individual alerts to users throughout the day and provide a summary of all alerts at day’s end
Deliver individual alerts to users throughout the day and provide a summary of all alerts at day’s end
This ensures users have a consolidated view of any alerts they might have missed. Use the minimum trigger count to prevent sending a digest if the total number of alerts is below a specified threshold, avoiding unnecessary notifications.
Send recommendation or top stories at the end of the day
Send recommendation or top stories at the end of the day
Club with fetch node to fetch the latest recommendations before sending the digest.
Send batched reminders for pending activities or courses
Send batched reminders for pending activities or courses
Update the list by removing completed tasks before the next reminder. Stop sending once a certain count of reminder is sent or all the activities are completed. You can add wait until node before digest to handle this use case, where on every task completion, an event is triggered and those events are filtered out based on condition rather than going into digest.
Frequently Asked Questions
What happens when digest schedule is changed and an existing digest is running?
What happens when digest schedule is changed and an existing digest is running?
Once a given batch has been opened by a workflow trigger, its window interval is immutable. The new schedule will be applicable from the next schedule.
What happens when dynamic schedule is empty?
What happens when dynamic schedule is empty?
An error will occur, and the workflow will terminate. If your use case involves sending both immediate and digest notifications based on user preferences within the same workflow, and you are using a dynamic schedule for passing digest frequency, add a branch before the digest node to send an immediate alert if the schedule is empty or if the schedule variable is missing.
What happens when wrong schedule is passed in dynamic schedule?
What happens when wrong schedule is passed in dynamic schedule?
When the dynamic schedule key is missing, or resolves to an invalid value, a corresponding error will be logged in workflow executions tab and further workflow execution will be skipped.
What happens when digest node follows time window?
What happens when digest node follows time window?
Triggers before the Time Window start and during its open time (between start time and end time) will be accumulated in the batch. For instance, with a Time Window set from 9:00 AM to 5:00 PM UTC and a 2-hour batch window, triggers from 5:00 PM to 9:00 AM (pre-window open) and 9:00 AM to 11:00 AM (during batch window) will be batched together. So, if you have to create a digest of all events coming outside office hours and send it next day at office start time, you can achieve it with time window and batch node in series with batch open for 5 minutes (just to accumulate all events).