Shipping since 2022
Changelog
Everything we've shipped since 2022— the features, accuracy gains, and reliability work behind email verification you can trust. We've been refining the engine for years, and we're still shipping.
Improvement
v2.5.0June 18, 2026Light & dark themes, a billing refresh, and new privacy controls
- Product-wide light and dark themes with a refined, accessible color system
- Redesigned billing: clearer credit balances, usage history, and pay-as-you-go credit lots
- New data-retention controls with configurable archival of uploaded lists
- Faster bulk verification with an optimized fast-path for known-good domains
- Email addresses are now masked in internal logs for tighter privacy
New feature
v2.4.0April 5, 2026Learning center, ROI calculator, and referrals
- Brand-new SendSure blog and learning center with guides across eight categories
- Interactive Email Verification ROI Calculator to size your savings
- Side-by-side comparison pages vs ZeroBounce, NeverBounce, Hunter, MillionVerifier, and Kickbox
- A 30-term email deliverability glossary with deep, cross-linked explainers
- Referral program — share SendSure and earn credits
- RSS feed and newsletter for product and deliverability updates
New feature
v2.3.0March 24, 2026Email scoring API and deliverability testing
- Standalone email quality scoring API — get a score without a full verification
- Domain deliverability testing with SPF, DKIM, DMARC, and blacklist analysis (A–F grade)
- Blacklist monitoring with automated checks and email alerts
- Self-serve data subject requests (export, delete, consent) for GDPR workflows
- Interactive API documentation with live, copy-paste examples
- Smarter dunning for failed payments with automatic retries and a grace period
Integration
v2.2.0March 10, 2026Unified integrations and richer exports
- Redesigned one-click connect for Mailchimp, SendGrid, and HubSpot
- Full HubSpot two-way sync via secure OAuth
- Richer result exports: status, quality score, risk band, reason, and flags
- A streamlined, consistent connection flow across every integration
Improvement
v2.1.0January 22, 2026Reliability and accuracy hardening
- Eliminated duplicate processing on very large jobs
- More robust CSV and spreadsheet parsing across encodings and formats
- Added plain-text (.txt) list support — one email per line
- Smarter per-domain pacing for higher mailbox acceptance and accuracy
- Automatic retries with backoff so transient mail-server hiccups never lose results
Improvement
v2.0.0November 12, 2025SendSure 2.0 — rebuilt for scale and security
- Re-architected data platform for enterprise-grade scale and reliability
- Signed, verifiable webhooks (HMAC) for every integration event
- Hardened security across authentication, rate limiting, and outbound requests
- Idempotent billing so payments are never double-charged
- Faster dashboard and reporting across the board
- Lighter, faster embeddable widget — now under 7 KB
New feature
v1.9.0August 14, 2025The 27-stage engine and catch-all intelligence
- Expanded our verification engine into a full 27-stage waterfall
- Machine-learning catch-all resolution to score domains that accept every address
- Deferred resolution that quietly re-checks uncertain results in the background
- A confidence score on every result — not just valid or invalid
- Measurable accuracy gains on tricky corporate and catch-all domains
New feature
v1.8.0April 9, 2025Predictive scoring and Outcome Studio
- Outcome Studio for campaign-level deliverability prediction
- Predictive engagement scoring powered by machine learning
- Risk bands that turn raw results into clear send / don't-send guidance
- A consolidated admin and reporting experience
New feature
v1.7.0December 3, 2024Teams, roles, and audit trails
- Team workspaces with granular roles and permissions
- Full activity and audit logging for every account
- API key management with scoped, revocable keys
- Usage dashboards with per-member and per-key breakdowns
Improvement
v1.6.0August 20, 2024Built for global scale
- Re-engineered infrastructure for high-volume, low-latency verification
- Real-time single-email checks in under three seconds
- Higher concurrency for multi-million-record bulk lists
- 99.9% platform uptime backed by continuous monitoring
Security
v1.5.0March 26, 2024GDPR-ready data handling
- GDPR-aligned data processing with a standard Data Processing Agreement (DPA)
- Configurable data retention with one-click data deletion
- Encrypted storage and transport for all customer data
- Regional data-handling controls
Integration
v1.4.0September 12, 2023Integrations and automation
- One-click Mailchimp and SendGrid list cleaning
- Zapier connection for no-code automation
- Outbound webhooks to push results straight into your own systems
- Scheduled, recurring list verification
New feature
v1.3.0April 18, 2023Quality scoring and risk bands
- A 0–100 quality score on every verified address
- Risk bands — safe, risky, invalid — for fast decisions
- Role-account and disposable-address flags surfaced in results
- Per-result reasons so you always know why an address was flagged
New feature
v1.2.0October 25, 2022Bulk verification and the developer API
- Bulk CSV and spreadsheet upload with downloadable results
- A real-time verification REST API for developers
- API keys and a quickstart guide
- Faster processing for large lists
Improvement
v1.1.0July 7, 2022Smarter detection
- Disposable and temporary email detection across thousands of providers
- Role-account detection (info@, sales@, support@, and more)
- Greylisting-aware retries for more accurate SMTP results
- A cleaner, clearer results dashboard
New feature
v1.0.0March 15, 2022SendSure is live
- Real-time email verification: syntax, domain, MX, and mailbox (SMTP) checks
- A simple dashboard to verify single addresses and small lists
- CSV upload for batch verification
- Instant valid / invalid / unknown results
- Free credits to get started — no credit card required