Rules & Limits

Understanding the rules and limits of drip campaigns helps you design effective sequences that work within the system's constraints.

Campaign limits

Limit	Value
Maximum steps per campaign	20 main-level steps
Maximum total steps (including branches)	50 steps
Maximum contacts per campaign	1,000 contacts
Maximum delay	365 days
Maximum wait timeout	168 hours (7 days)
Default wait timeout	48 hours
Schedule window (earliest)	5 minutes from now
Schedule window (latest)	12 months in the future
Campaign name	1–255 characters
Campaign description	Up to 1,000 characters
Step name	Up to 255 characters
Contacts per enrollment request	Up to 1,000
Minimum step gap	1 minute between consecutive steps

Node placement rules

Rule	Details
START node	Must be the first node in every campaign
END node	Every path must end with an END or CHATBOT node
At least 1 MESSAGE	Campaign must contain at least one message or chatbot step
After START	Only a MESSAGE node can follow the START node
After MESSAGE	Can be followed by MESSAGE, DELAY, BRANCH, CHATBOT, or END
After DELAY	Can be followed by MESSAGE or CHATBOT
After BRANCH	Each path can have MESSAGE, DELAY, CHATBOT, or END
No consecutive BRANCH/DELAY	Cannot place a BRANCH directly after another BRANCH, or a DELAY after another DELAY
No steps after CHATBOT	Chatbot nodes are always terminal — nothing can follow them
No orphaned nodes	Every node must have at least one incoming or outgoing connection
No circular paths	The flow cannot loop back on itself

Status transition rules

Campaigns can only move between certain statuses:

From	Can go to
Draft	Active, Scheduled, Archived
Scheduled	Active (auto), Archived
Active	Paused, Archived
Paused	Active (resume), Archived
Archived	— (final state)

info

A Scheduled campaign automatically transitions to Active when the scheduled date/time arrives.

Message rules

Rule	Details
WhatsApp: Templates only	WhatsApp campaigns can only send approved WhatsApp templates
WhatsApp: Template must be approved	The template used in each step must have "Approved" status
WhatsApp: Template paused/disabled	If a template is paused or disabled mid-campaign, that step will fail
Messenger / Instagram	Can send text messages (up to 2,000 characters), button messages, or card templates

warning

For WhatsApp campaigns, always verify that your templates are approved before starting. If a template gets paused by WhatsApp during an active campaign, messages using that template will fail.

Enrollment rules

Rule	Details
No duplicate enrollments	A contact can only be enrolled once per campaign
Opt-out respected	Contacts who have opted out of the channel won't receive messages
Contact must exist	The contact must be in your system to be enrolled
Insufficient balance	Campaign will pause automatically if your account balance is too low

Timing rules

Rule	Details
Scheduled date	Must be 5 minutes to 12 months in the future
Step gap	At least 1 minute between consecutive steps
Delay types	Immediate, relative days, absolute date/time, or status-based
Wait timeout	1 to 168 hours (7 days)
Balance pause	Campaigns paused due to insufficient balance show a separate "Resume (Manual)" button on the Campaign List

Permission requirements

Action	Who can do it
View campaigns	Users with campaign view permissions
Create/edit campaigns	Users with campaign edit permissions
Start/pause/archive	Users with campaign management permissions
Delete campaigns	Users with campaign delete permissions
View enrollments	Users with enrollment view permissions
Enroll/unenroll contacts	Users with enrollment management permissions
View reports	Users with report view permissions

info

Permission requirements depend on your organization's role configuration. Contact your administrator if you need access to specific features.