Smtp Connectivity Checker

Mailscribe verifies email addresses, tests SMTP connections, and suggests subject lines. It runs client‑side without sign‑ups, keeping data private. Useful for marketers, copywriters, and technical teams to clean lists and boost open rates.

Unspam Email Spam Checker analyzes outgoing mail for deliverability by scoring spam triggers, validating SPF/DKIM/DMARC/BIMI, checking blacklist status, broken links, short URLs, and DNS reputation to improve inbox placement for email success.

Email Verification uses AI to validate and clean email lists, flagging invalid, disposable, spam‑trap, role‑based, and catch‑all addresses. Real‑time API results and downloadable reports improve inbox placement and sender reputation.

Folderly monitors email placement, IP health, and DNS before launch, providing inbox insights and real‑time alerts. Its AI‑powered EmailGen drafts high‑performance cold sequences, while analytics and compliance help ensure deliverability and secure campaigns.

Spamcheck.ai is an AI-driven tool that detects and prevents spam through IP filtering, content analysis, and email validation. It ensures high accuracy and easy integration, providing robust protection for online content and form submissions.

SuperSend unifies cold‑email sequencing, mailbox management, and reply handling into one dashboard. It offers multi‑channel sequences, automated domain warm‑up, placement testing, AI‑based conversation threading, and deliverability analytics for B2B teams.

WebTotem delivers an AI‑driven firewall that blocks brute‑force, DoS, SQLi, XSS, bot, spam, path traversal, and emerging threats, with custom IP whitelisting. It scans for malware, defacement, open ports, tracks SSL and domain expiry, scores vulnerabilities, and provides dashboards for collaboration

Spark Mail unifies IMAP, iCloud, Exchange, Outlook, Yahoo, and Google accounts on one screen, featuring a Smart Inbox, Gatekeeper, and priority highlights. It offers AI summaries, drafting, translation, scheduling tools, and real‑time team collaboration, all encrypted on Google Cloud.

ScamMinder evaluates URLs in real‑time, assigning safety scores and risk indicators for phishing, fraud, and malware. Users upload message screenshots for AI analysis, while the platform aggregates community reviews, threat stats, and a site database to verify authenticity.

SecureGPT is a free platform for security testing OpenAI ChatGPT plugins.

Mailvio boosts email marketing by prioritizing inbox placement, automating IP/domain warm‑up, and using a 3‑wave sending strategy aligned with AI spam filters. Its AI writer, RFM segmentation, and real‑time dashboards improve deliverability and engagement.

SmartProxy is a global proxy network offering 100M+ residential IPs with advanced geo-targeting and session control. It provides developer tools and a management dashboard for web scraping, ad verification, and other data-intensive tasks.

PowerDMARC centralizes DMARC, SPF, DKIM, MTA‑STS, TLS‑RPT, and BIMI management, automating DNS publishing and SPF flattening. It offers aggregate and forensic reporting, real‑time threat maps, AI‑driven threat intelligence, multi‑lingual control, API, and white‑label options.

Check Typo is an AI‑powered spell‑checker extension that integrates into web forms, Gmail, LinkedIn, and social media drafts, supporting 100+ languages and preserving tone while providing real‑time corrections for students, professionals, and writers.

sshx is a web‑based collaborative terminal that shares a command‑line session via a secure, unique link. It offers real‑time cursor sharing, chat, presence, end‑to‑end encryption, and a cross‑platform CLI for developers, educators, and DevOps.

Boost Inbox automatically warms Gmail, Outlook, Yahoo, SES, and SMTP accounts by simulating realistic email interactions to improve inbox placement, tracks reputation scores, scales to multiple accounts, and integrates with Zapier for streamlined workflows.

Smart Online Notepad is a flexible writing tool that offers AI grammar correction, tone adjustment, real-time word counting, and easy note sharing. It supports multiple languages and has a user-friendly design with dark and light modes.

Mailoptimal is an email warm-up and deliverability testing tool that automates warm-up processes for unlimited accounts, providing insights on inbox placement, monitoring blacklist listings, and offering customizable strategies to enhance email engagement and ensure successful delivery.

Mailtester.ai is an email deliverability testing tool that evaluates SPF, DKIM, DMARC, and DNS configurations. It offers a deliverability score, spam score analysis, and actionable content recommendations to enhance email engagement and improve inbox placement.

Checksum automatically generates, runs, and maintains end‑to‑end, API, and CI tests with Playwright, monitors UI/backend changes, heals failures via pull requests, integrates into CI pipelines, and stores all tests as code to prevent vendor lock‑in.

NSocks.com is a residential proxy service providing access to over 80 million global IPs for high-anonymity browsing. It enables location targeting and API integration for tasks like ad verification, market research, and data scraping.

FCK.School Free Tools offers web based writing utilities — grammar and punctuation checkers, summarizer, paraphrase and rewrite tools — plus academic content generators (outlines, thesis statements, titles, paragraphs, conclusions) to support drafting, editing, and idea development.

Thatch is a virtual mailbox service that provides a permanent business address, scans and stores physical mail in unlimited cloud storage, offers automated forwarding, global redirection, check deposits, team collaboration, and encrypted privacy protection.

Knowmail is an online hub offering structured guides, checklists, and up‑to‑date insights for email marketing professionals. It covers data‑driven strategy, deliverability, copywriting, segmentation, performance, cost management, compliance, and industry trends.

CorrectEnglish is an AI writing assistant delivering spelling, grammar, and style corrections on Android, iOS, and browsers. It offers contextual word suggestions, error detection, a plagiarism checker, formatting guides, readability scores, and integrates with extensions and research tools.

SmartStudi is an AI writing assistant that offers plagiarism checking, AI detection (10% confidence), paraphrasing to evade detection, citation generation in multiple styles, document summarization, grammar correction, and file uploads from Google Drive, PDFs, DOCX, and PPTX.

Page Canary automates continuous website quality checks, monitoring thousands of sites for SSL expirations, security violations, broken links, spelling and accessibility errors. It runs custom audits, delivers actionable insights, daily alerts, and CI/CD integration.

Warmy.io is an AI-powered email warmup platform that automates sender reputation building and deliverability monitoring. It integrates with major email services to scale campaigns safely using features like mailbox rotation and spam-trap avoidance.

Flowtext.io automatically extracts two‑factor authentication codes from iMessage SMS on macOS, copies them to the clipboard, and notifies the user. It supports many 2FA services, keeps data local, and eliminates manual copy‑paste during logins.

Grammar Checker is a free AI tool that corrects grammar, spelling, and punctuation errors. It also provides suggestions to improve your writing style and polish your text.

Checkget is a browser extension that adds ChatGPT to any webpage via a single shortcut. It auto‑detects contexts, enabling summarization, translation, grammar correction, tone adjustment, and can run locally encrypted. Supports GPT‑3.5/4 for fast, on‑page AI help.

DraftCheck automates document proofreading and revision, offering grammar and spelling corrections, style and clarity suggestions, and rewrite options. In-document add-ons, collaborative change tracking, comment threads, permissions, and revision history streamline team editing and publishing.

FuturePerfect scans every public page of a website for spelling and grammar errors in 30 languages, delivering instant alerts and a dashboard of correction suggestions. No code integration required—just a URL to keep content error‑free and professional.

DevClad is a web tool that helps diagnose and troubleshoot network connectivity issues. It provides step-by-step instructions for checking internet connections, proxy settings, and firewall configurations, making issue resolution straightforward for users experiencing disruptions.

checkcompany.net is a company intelligence platform that verifies legitimacy and analyzes ownership, financial health, and business ecosystems. It provides detailed reports, trend visualizations, and API integration for due diligence and risk assessment.

PunctuationCheck is an AI tool that instantly corrects punctuation, grammar, and spelling, offering manual or batch edits. It supports regional English variants, basic formatting, PDF export, and processes text locally for privacy.