Mithilesh Kumar

Lead Email Deliverability Specialist
Over 8 years of experience in high-scale email infrastructure and deliverability strategy

• Designed, configured, and maintained robust email systems using PowerMTA, SMTP relays, and authentication protocols (SPF, DKIM, DMARC).
• Led domain/IP warm-up processes to ensure optimal sender reputation and inbox placement.
• Monitored and analyzed key email performance metrics to drive continuous deliverability improvement.
• Resolved real-time deliverability issues, reducing spam folder placement, bounces, and ISP blocks.
• Collaborated with cross-functional teams (marketing, IT, compliance) to align deliverability strategies with campaign goals.
• Managed dedicated IP pools and streamlined email workflows across multiple domains.
• Developed and enforced list hygiene practices and feedback loop management protocols.
• Ensured compliance with international email regulations (CAN-SPAM, GDPR, CASL).
• Currently lead email deliverability strategy at a global SaaS company for both marketing and transactional email systems.
• Delivered measurable improvements in inbox rate and engagement through data-driven optimizations and ISP-specific strategies.

• Successfully optimized marketing campaign setup through the management of Power MTA (Panel, SMTP Relay, and SMTP API)
• Maintained vigilance over IP allocation, sender score, and blacklisting.
• Supervised the monitoring of domain status by utilizing GPT and DN delegation
• Led and optimized FBL management processes
• Authored comprehensive reports and policy documents, influencing key stakeholder opinions and actions.
• Enhanced error monitoring for authentication
• Increased operational effectiveness by actively monitoring and optimizing MTA queue performance
• Provided consultation on data and content use cases, email marketing guidelines, and warm-up plans
• Prepared and delivered decks for business reviews on a weekly, monthly, and quarterly basis.
• Conducted data analysis and developed compelling presentations
• Educated clients on the regulations governing content filtering & best practices by ISPs.
• Managed B2B and E-commerce Email Campaigns effectively
• Ensured optimal email deliverability by working closely with ISPs and Blocklisting Organizations
• Conducted R&D to enhance the efficiency of B2B email campaigns, resulting in improved campaign performance.

• Effectively managed Power MTA configuration for seamless execution of various types of campaigns.
• Managed IP allocation, sender score, and blacklisting effectively.
• Monitored domain status through GPT and DNS delegation records
• FBL management
• Monitored authentication errors for identification and resolution
• Monitored MTA queues and errors
• Consulted on email marketing guidelines, data and content use cases, and warm-up plans
• Created and delivered comprehensive business review presentations on a weekly, monthly, and quarterly basis
• Conducted data analysis and generated informative presentations
• Educated clients on content filtering, ISP rules, regulations, and best practices.

• Installed and configured applications, provided user training and support
• Maintained daily reports and mapped web application performance
• Assisted clients via email, phone, and web communication channels
• Conducted application functionality tests and troubleshooted reported issues
• Configured APIs and answered technical queries
• Responsibility for documenting the configuration of the system
• Successfully managed SMS & email campaigns, resulting in increased customer demand and improved product availability.
• Managed ticketing tools including HPSM, Jira and Service Now
• Ensured customer retention through effective relationship management
• Efficiently handled incident reports alongside managing seamless customer onboarding.

• Supported Marketing Automation tools and Enterprise tool and provided application assistance
• Assisted clients via email, phone, and web communication channels
• Conducted feature testing and troubleshooting
• Developed email campaign strategies and workflows
• Created landing pages and implemented lead flows
• Managed IP and domain configuration and whitelisting
• Analyzed campaigns, templates, and social awareness campaigns
• Creating various types of campaign like(A/B split, Regular Campaign, RSS Feed campaign, Autoresponder Campaign)
• Push Notification
• Targeted ads on website page
• Configuring the various applications with their API and client ID
• Implementing the customer/client requirement with product team
• Template recommendation based sender score
• Proactively making recommendations for how our customers can generate more leads and win more business
• Documented client queries, system configurations and run feedback campaigns
• Provided customer onboarding and technical support.