SendSure docs
Product guides, onboarding, and technical setup
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Verify Your First Email
Run a single verification, read the result object, and understand what SendSure checks before you move into bulk workflows.
Upload Your First List
Prepare a clean CSV or XLSX, upload it, analyze the file, and move safely into full verification.
Results and Statuses Guide
Interpret valid, invalid, risky, unknown, and catch-all outcomes so teams know what to send, suppress, or review.
Widget Install and Troubleshooting
Install the form widget, validate that it fires correctly, and debug the most common embed issues.
Verify Emails in Clay
Add SendSure as an HTTP enrichment column in Clay so every lead in your table is verified before it reaches your CRM or sequencer.
Integration Troubleshooting
Reconnect Mailchimp, HubSpot, and other sources when auth, permissions, or list syncs stop behaving as expected.
Official SDKs (Node.js & Python)
Install the official SendSure SDKs to verify emails from Node.js or Python in a few lines, with built-in rate-limit handling and webhook signature verification.
Webhooks and API Quickstart
Generate API keys, send your first verification request, and wire webhook consumers with the right operational checks.
API Errors, Rate Limits, and Retries
Handle every error code, respect rate-limit headers, and implement the deferred-verification retry contract so your integration degrades gracefully.
Credits and Billing
Understand credit burn, Growth renewals, invoice history, and the questions finance teams ask most often.
Onboarding Playbooks by Use Case
Choose the fastest onboarding path for list cleanups, recurring hygiene, API validation, or agency workflows.
Troubleshooting lives in the help center
Short, problem-first support articles, also surfaced in the chat widget.
Account and Billing
Open the support portal and browse the account and billing articles.
CSV and Imports
Open the support portal and browse the csv and imports articles.
Verification Results
Open the support portal and browse the verification results articles.
API and Webhooks
Open the support portal and browse the api and webhooks articles.
Integrations Troubleshooting
Open the support portal and browse the integrations troubleshooting articles.
Widget and Forms
Open the support portal and browse the widget and forms articles.