High-Inbox B2B Emailer Build
Publicada el 2026-07-19
Descripción de la oferta
I need a custom bulk-mailing solution that can reliably push 50–100 k cold B2B And messages per day straight into recipients’ inboxes, not the spam folder. The application must run from a clean, secure web-based dashboard so I can log in from any browser, upload a CSV, schedule campaigns and watch the numbers move in real time. Core requirements • Deliverability is everything. I expect you to configure the right combination of domains, authentication (SPF, DKIM, DMARC), warming strategy and sending infrastructure so campaigns reach primary tabs consistently. • In-app analytics must show open rates, click-through rates and bounce rates at both campaign and list level. I should be able to export those reports as CSV. • List hygiene tools—automatic suppression of hard bounces, spam complaints and unsubscribes—need to run in the background. • A/B subject testing and basic template editor (HTML + drag-and-drop) are highly desirable extras if you already have modules for them. Tech stack is open as long as it is stable and low-cost to operate; popular choices such as Node.js, Python, or PHP back ends with MySQL/PostgreSQL are fine. If you favour third-party SMTP relays, APIs, or dedicated IP pools, outline why your pick suits high-volume cold outreach and how you will mitigate throttling. Deliverables 1. Fully functional web application deployed to my VPS or cloud instance. 2. Source code in a private Git repo with installation notes. 3. Clear guide covering domain setup, warm-up schedule and best practices to keep inbox rates high. 4. Two weeks of post-launch support to fix critical bugs or configuration issues. Show me examples of bulk email tools you have already built (screenshots or live demo) and mention any deliverability successes you can verify.
Skills
Fuente original: freelancer