Automated Email Sender: Scalable Recruiter Outreach
Configurable system with rate limiting, dynamic HTML templates, SMTP integration, SPF/DKIM auth, bounce handling, and reputation logging for reliable job outreach.
During intense job hunting, manual recruiter emails became a bottleneck, so I built an Automated Email Sender with rate limiting and dynamic templates for targeted, scalable outreach. It handles SPF/DKIM authentication for high deliverability, automatic bounce processing, and detailed logging to protect sender reputation.
Key Features
Rate Limiting and Scheduling
Built-in throttling prevents spam flags, spacing sends intelligently across campaigns for natural delivery patterns.
Dynamic HTML Templates
Configurable templates with merge tags personalize emails at scale—names, roles, and custom fields pulled from candidate data.
SMTP Integration with Auth
Secure SMTP relay with SPF/DKIM signing boosts inbox placement rates critical for recruiter response tracking.
Bounce Handling and Logging
Auto-processes hard/soft bounces, quarantines bad addresses, and logs metrics for reputation monitoring and campaign optimization.
Tech Implementation
Node.js backend orchestrates queues, templating via Handlebars, Nodemailer for SMTP, and AWS SES for production-scale sending. Local dev used Postfix; production leverages verified domains for compliance.
Hidden Costs and Scaling
- AWS SES costs: Free tier for under 62k emails/month, then $0.10 per thousand.
- Domain Auth is a free SPF/DKIM setup via DNS.
- No Extra Tools required; self-hosted queues avoid third-party fees.
Path Forward
- A/B testing for subject lines and content variants.
- Multi-channel expansion to LinkedIn and SMS.
- An analytics dashboard for opens, replies, and heatmaps.
Streamline your outreach—fork and deploy for your job hunt!
— Adyaman