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