Apr 5, 2026
Advertising in Newsletters: 2026 Pricing and Networks Guide
Newsletter advertising in 2026: real CPMs by vertical ($25-$180), Beehiiv vs Paved vs Sparkloop, Apple MPP measurement workarounds, negotiation tactics.
Blog
Insights, guides, and updates from the Dupple team.
Apr 3, 2026
What Is Technical Debt in 2026 (With AI-Era Metrics)
Technical debt in 2026: Cunningham vs Fowler vs AI-generated debt, SonarQube/Snyk/CodeClimate prices, DORA findings on AI impact, refactor strategies.
Apr 2, 2026
Top 12 Marketing Tools for Business in 2026 (Real Pricing)
Top 12 marketing tools for business in 2026: HubSpot, Klaviyo, ActiveCampaign, Mailchimp, Brevo, Customer.io, Marketo. Real prices and stacks by company size.
Apr 1, 2026
Best Software Engineering Newsletters to Subscribe to in 2026
10 best software engineering newsletters in 2026: Pragmatic Engineer, Bytes, ByteByteGo, TLDR Tech, Hacker Newsletter, Refactoring. Free vs paid filter.
Mar 31, 2026
Best Newsletter Design in 2026 (Real Specs + Tools)
Newsletter design in 2026: 600px width, dark mode mandatory, AI smart-inbox effect, Beehiiv vs Beefree vs Stripo, real specs for fonts/CTAs/images.
Mar 30, 2026
TD Bank Data Breach: 2025 Incident and What to Do
TD Bank data breach Feb 2025: employee accessed SSNs and account data, class action filed, CFPB $28M fine, what TD customers should do to protect themselves.
Mar 29, 2026
How to Secure Web Applications in 2026 (OWASP + LLM)
Secure web apps in 2026: OWASP Top 10 + LLM Top 10, Cloudflare/AWS/Imperva WAF pricing, Snyk/Semgrep/Veracode SAST. 90-day plan that actually moves the needle.
Mar 28, 2026
Market Research Report Template (2026 Practical Guide)
Build a 2026 market research report: lean 5-page vs full 50-page templates, Statista vs Gartner vs IBISWorld pricing, AI tools that replace 30% of analyst work.
Mar 27, 2026
How to Improve Email Deliverability in 2026 (Compliance Guide)
Email deliverability in 2026: SPF/DKIM/DMARC setup, Microsoft+Gmail+Yahoo bulk sender rules, BIMI honest take, GlockApps and Postmaster Tools pricing.
Mar 26, 2026
How to Optimize SQL Queries in 2026 (PostgreSQL 18 Update)
Optimize SQL queries in 2026: PostgreSQL 18 skip scan and async I/O, EverSQL and pgMustard pricing, EXPLAIN ANALYZE workflow, common anti-patterns to delete.
Mar 25, 2026
Data Visualization Best Practices in 2026 (Tools + Rules)
Data visualization in 2026: Tableau vs Power BI vs Metabase vs Looker pricing, chart-type rules, accessible color palettes, AI dashboard agents that work.
Mar 23, 2026
Marketing Tech Trends 2026 (Real Changes, Not Hype)
2026 martech trends: cookies still in Chrome, HubSpot Breeze outcome pricing, Salesforce Agentforce scale, CDP consolidation, what to actually act on this quarter.
Mar 21, 2026
How to Learn Python Fast in 2026 (Realistic 3-6 Month Path)
Learn Python fast in 2026: MOOC.fi free course, Boot.dev, AI pair programming with Cursor and Claude, real salaries ($129K avg), discipline to avoid tool dependency.
Mar 20, 2026
What Is Penetration Testing in 2026 (Cost + AI Tools)
Penetration testing in 2026: PTES vs OWASP WSTG, Burp Suite + Metasploit pricing, PentestGPT and PentAGI AI tools, real SMB cost ranges $4K-$25K.
Mar 19, 2026
AI Training for Employees in 2026 (Vendor-Neutral Guide)
Corporate AI training in 2026: Anthropic Academy free baseline, Coursera and Udemy Business pricing, fluency vs engineering curricula, real measurement metrics.