Monitor a Google Sheet for pending rows, send messages via WasenderAPI using your WhatsApp number, and update statuses back to Google Sheets, repeating on schedule.
This AI agent reads pending contacts from Google Sheets, sends WhatsApp messages via WasenderAPI, and marks each row as sent, enabling scalable outreach with clear delivery tracking.
Automates the core actions to move contacts from pending to delivered.
Read pending rows from Google Sheets.
Send messages through WasenderAPI using the connected WhatsApp number.
Update the Status column to 'sent'.
Respect API rate limits with fixed pacing.
Log delivery outcomes and errors back to Google Sheets.
Repeat the process on schedule to maintain flow.
Before: manual data entry and one-by-one messaging caused errors and delays. After: automated flow reads pending rows, sends messages via WasenderAPI, and updates statuses to sent, delivering reliable bulk outreach.
A simple 3-step flow anyone can follow.
Scan Google Sheets for rows where Status is pending and collect recipient data from each row.
Call the WasenderAPI endpoint using the configured WhatsApp number to deliver the message.
Update the corresponding row’s Status to 'sent', log the result, and repeat after a short interval to respect rate limits.
A concrete scenario with inputs, timing, and outcomes.
Scenario: A local retailer wants to message 25 customers with personalized greetings and reminders about a sale; delivery is attempted via WasenderAPI and the sheet is updated to Status 'sent' for all recipients within about 5 minutes.
Roles that can leverage this AI agent for bulk WhatsApp outreach.
Wants affordable, scalable outreach using an existing WhatsApp line.
Needs to run bulk campaigns for clients with minimal setup.
Sends proactive updates and reminders to customers.
Promotes new products to customers via bulk messages.
Sends event invitations and reminders at scale.
Follows up with customers after purchases.
Core tools that enable this AI agent to operate end-to-end.
Reads pending rows and updates Status to 'sent'.
Sends WhatsApp messages using the configured number.
Orchestrates the flow, polling, and API calls.
Practical scenarios where this AI agent adds value.
Common questions with practical, detailed answers.
WasenderAPI provides an unofficial interface to WhatsApp; usage must comply with WhatsApp policies and local regulations. This setup is intended for legitimate outreach with opt-in contacts. You should avoid sending unsolicited messages to users who have not consented. Always ensure you respect opt-out requests and rate limits to prevent temporary blocks. For best results, use structured campaigns and audience segmentation.
Yes. The flow can use a personal WhatsApp number, but you should be aware that personal accounts may have tighter limits and policy considerations. We recommend using a dedicated line if you expect larger throughput. Always maintain consent and provide clear opt-out mechanics. If your volume grows, consider shifting to a business-verified number to improve deliverability and compliance.
Yes. The agent can pull dynamic fields such as name, product, or date from the sheet and inject them into each message. You can map column values to placeholders in your message template. Personalization improves relevance and engagement without manual editing. Ensure the data is accurate to avoid misaddressed messages.
The flow can be configured to send text messages and media templates via WasenderAPI. You can tailor templates to recipient data and handle basic media types if your WhatsApp plan supports it. If you need richer content, extend the HTTP call configuration to transmit media URLs. Always verify that media complies with WhatsApp policy and size limits.
Store API keys securely in the automation environment (for example, as secrets in n8n). Use restricted access controls and rotate keys periodically. Do not hard-code credentials in messages or sheet data. Encrypt any sensitive fields and restrict permissions to essential personnel only. Regularly audit logs to detect unusual activity.
Delivery failures are captured in the agent’s logs and the sheet’s status can be updated to indicate failure. You can configure retry logic or escalation to a human operator. The system records the error details and the recipient’s data for troubleshooting. Consider implementing a separate failed deliveries report for analysis.
Pause or stop by disabling the underlying automation flow in your automation runner (e.g., n8n). You can apply a maintenance window or switch to manual mode when needed. Ensure any in-progress messages are completed or logged before pausing. Always verify that the sheet state remains consistent after stopping the flow.
Monitor a Google Sheet for pending rows, send messages via WasenderAPI using your WhatsApp number, and update statuses back to Google Sheets, repeating on schedule.
