Identify temporary disposable emails, burner inboxes, and fraudulent signup domains to protect your sender reputation and SaaS conversion funnel.
Cold Email Subject Line & Icebreaker Tester
Test cold email subject lines online. Score character length, word count, spam trigger dictionary detection, and simulate mobile inbox previews for Gmail and Apple Mail.
BIMI Record Generator — Brand Indicators for Message Identification
Generate and validate DNS BIMI TXT records online. Display your verified official brand logo alongside authenticated emails in Gmail, Apple Mail, and Yahoo.
Words Per Minute (WPM) Calculator – Reading Speed, Speech & Text Timing
Calculate reading speed in Words Per Minute (WPM), estimate textbook study time, determine speech presentation pacing, and test silent reading vs oral presentation speed.
Weighted Grade Calculator | Custom Category Weights & Final Letter Grade
Calculate overall semester grade across weighted syllabus categories like exams, homework, and quizzes.
Vancouver Citation Generator – ICMJE Biomedical & Medical Journal Referencing
Generate Vancouver referencing style citations for clinical medical papers, PubMed NLM records, biomedical journals, and healthcare research following ICMJE guidelines.
Study Time Calculator | Recommended Weekly Hours per Credit Hour
Calculate recommended weekly study hours based on college credit load, course difficulty, and target GPA.
Study Schedule Generator | Spaced Repetition & Exam Prep Planner
Build an optimized daily revision schedule with spaced repetition milestones and Pomodoro blocks.
Student Attendance Percentage Calculator – Bunk & Minimum 75% Requirement
Calculate class attendance percentage, determine how many classes you can safely miss (bunk) while maintaining 75% or 85% requirements, or classes needed to recover.
SAT to ACT Score Converter | Official College Board Concordance
Convert scores between SAT (400-1600) and ACT (1-36) based on official College Board concordance tables.