Confirm Inbox is a Fully Integrated, Fast and Accurate Email Validator. Successful email deliverability is critical, and sending only to pre-validate emails addresses is vital to maintaining a strong sender reputation. Confirm Inbox provides Bulk Email Validation and effective email marketing tools that provides: Bulk Email List Validation via CSV Export Cleaned List to your Marketing Platform via API Run Mail Marketing Campaigns via SMTP API Real-Time API Validation Compatible with all your favorite SMTP Providers API Full integration and support for most popular SMTP API. Bring your own API keys for these API providers and start sending mails via our Email Campaign Drag-and Drop Builder (coming soon). Amazon SES Send Grid SendinBlue SMTP Integration All with No Commitment, Usage Based Pricing, so you only pay for what you use.