Sendloop is an all-in-one email marketing solution for SaaS, e-commerce, application, and small business owners.
Sendloop is an all-in-one email marketing solution for SaaS, e-commerce, application, and small business owners. On Nagent, Sendloop is exposed as a fully-configurable email newsletters integration that any agent can call — 5 actions, and API_KEY, OAUTH2 authentication. No code is required to wire Sendloop into your workflow — connect it once via the External Integrations panel and reuse it across every agent you build.
Agent builders use Sendloop to automate the kinds of tasks email newsletters teams previously handled manually. Concrete examples — each one is a single agent step in Nagent — include:
Every action and trigger is paired with a structured input/output schema (visible in the sections below), so when you wire Sendloop into Helix — our agentic agent builder — the editor knows exactly what each step expects and produces. Configure once, deploy anywhere across your Nagent agents.
Every operation an agent can call against Sendloop, with input parameters and output schema. Drop these into any step of an agent built in Helix.
SENDLOOP_GET_ACCOUNT_INFOTool to retrieve account information. Use when you need details about the current Sendloop account.
Output
Data from the action execution
Error if any occurred during the execution of the action
Whether or not the action execution was successful or not
SENDLOOP_GET_OVERALL_LIST_REPORTTool to retrieve overall report for a subscriber list. Use after sending campaigns to get summary metrics.
Input parameters
Unique identifier of the subscriber list.
Output
Data from the action execution
Error if any occurred during the execution of the action
Whether or not the action execution was successful or not
SENDLOOP_LIST_CAMPAIGNSTool to list campaigns. Use when you need to filter by campaign status and handle pagination for campaign retrieval.
Input parameters
Page number to retrieve (1-based indexing)
Filter campaigns by status: 'active', 'draft', 'scheduled', 'archived', or 'all'
Number of campaigns per page
Output
Data from the action execution
Error if any occurred during the execution of the action
Whether or not the action execution was successful or not
SENDLOOP_LIST_LISTSTool to retrieve subscriber lists. Use when you need to get all mailing lists.
Output
Data from the action execution
Error if any occurred during the execution of the action
Whether or not the action execution was successful or not
SENDLOOP_LIST_SUBSCRIBERSTool to list subscribers in a specified SendLoop list with pagination. Use when you need to retrieve subscribers for a given list ID, optionally filtering by segment and using start index for pagination.
Input parameters
Unique identifier of the subscriber list to retrieve subscribers from
Optional segment ID to filter subscribers by segment
Starting index for pagination (0-based). Defaults to 0
Output
Data from the action execution
Error if any occurred during the execution of the action
Whether or not the action execution was successful or not
No publicly available marketplace agent is found using this tool yet. There are 80 agents privately built on Nagent that already use Sendloop.
Build on Nagent
Connect Sendloop to any Nagent agent in minutes — no API key management, no boilerplate. Just configure and deploy.
The five questions agent builders ask before adopting a new integration.
Open the External Integrations panel inside Nagent (app.nagent.ai/externalIntegration), find Sendloop, and click "Connect Now." You'll authenticate with API_KEY, OAUTH2 — Nagent handles credential storage and refresh automatically. Once connected, Sendloop is available to any agent in your workspace.
No. Nagent provides no-code integration for every tool. Once Sendloop is connected, you configure its 5 actions directly in the agent builder UI — no API calls, no boilerplate, no schema management.
Helix — Nagent's agentic agent builder — lets you drop Sendloop steps into any workflow visually. Pick an action (e.g., one of those listed above), fill in the inputs (Helix knows the required vs. optional schema for each parameter), and connect it to upstream/downstream steps. Triggers run as the entry point of an agent, so when a Sendloop event fires, the agent kicks off automatically.
Every Sendloop action and trigger ships with a fully-typed schema — input parameters with name, type, required flag, and description, plus the output payload shape. The schemas are documented in the sections above. Helix uses these schemas to validate your configuration at build time and to type-check the data flowing between steps.
Yes. While Sendloop ships with 5 pre-built email newsletters actions, you can layer custom logic around them inside Helix — pre/post-processing steps, conditional branches, retries, or stitching Sendloop together with other connected tools. For deeper customization, talk to our team about Nagent's Agentic AI Lab — forward-deployed engineers who build Sendloop-based workflows tailored to your business.