Intelligence, engineered.

I can confidently say John's the best professional we've ever engaged. We brought him a large project and a big challenge — improving our email deliverability, optimization, and measurement across hundreds of campaigns, and teaching us to become experts ourselves. He helped us accomplish every one of our goals and measurably improved our results. We would unreservedly and enthusiastically recommend him.

John was exceptional. He helped us set up and secure our Microsoft 365 infrastructure, provision domains, implement strong email security, and harden the overall ecosystem in preparation for growth. What stood out most was his ability to translate complex technical decisions into clear, practical guidance.

I've been in the email game for 15+ years. John is good, VERY good. Will be working with him from here on out for anything email related.

John helped me migrate my company's entire email system from GoDaddy to a corporate Google Workspace. He worked into the evening to make sure that if there was any downtime between cutting the email over, it would be after hours (there was no downtime!). One of the better IT professional experiences I have had in my 20-year career.

John is a true professional and an absolute expert in email deliverability. His understanding of SPF, DKIM, DMARC, and advanced routing inside Klaviyo was exactly what we needed. He didn't just fix the issues — he built systems that continue to monitor and improve deliverability across platforms.

John is the first person I've hired on Upwork who works harder than I do. Day or night, rain or shine, John was there to manage and execute on a complex migration project under time pressure. He asked great questions and always followed through. 10/10 would recommend.

John is amazing — gets the job done right the first time. Always available and goes the extra mile. My company has been developing software since 1998 and I have hired many consultants in IT and engineering. I will not hesitate to contact John for all our future IT tasks.

John is a fantastic communicator and qualifies as an expert in his field. He's a rare find and easily exceeds a 20x benefit to cost ratio. You'll know you picked the right guy the moment you get started with him.

John has been such a positive asset to our organization. Prompt to respond, quick to solve a problem or complete a task. Since a large amount of our company is remotely operated, John's IT expertise has been crucial for our technical side to run smoothly.

All I can say is John is a Master in IT. Your dedication and expertise have truly made a remarkable impact on our team. Quick response time to technical issues has been instrumental in minimizing downtime and ensuring seamless operations. If you need an IT, hire John. You won't regret it.

John did an outstanding job with the email migration project. He approached the task with precision and attention to detail, ensuring that every aspect of the migration was executed smoothly and without interruption to daily operations. The end result was a seamless transition to the new email system.

John is not just a problem solver, he is a problem preventer, constantly thinking steps ahead. His communication skills are unparalleled — he possesses an innate ability to explain complex issues with clarity and precision, making collaboration seamless and efficient.

John was EXCELLENT at providing our agency the IT support we needed. As a small agency with no IT department, it was critical we had an expert helping us make the transition when we completely rebranded. John held our hands through the entire process, ensuring all of our accounts were set up properly and securely.

John is an absolute pro when it comes to email deliverability. He quickly pinpointed my issues, offered clear and practical solutions, and very patiently guided me every step of the way. After getting burned by cheaper providers, working with John was incredibly refreshing; he genuinely cares, knows what he's talking about, and consistently goes above and beyond. Highly recommend him if you want real results.

John was excellent to work with — responsive, proactive, and highly knowledgeable. He quickly identified and resolved email security and spam-filtering issues, and helped us smoothly implement improved security protocols. His clear communication and willingness to dive into detailed troubleshooting made the entire process easy. I highly recommend John for reliable, expert IT support.

John has been an incredible help to my business and team. He not only thinks outside the box to find solutions but is also extremely fast to respond, exceeding my expectations. He has continued to help with IT and technology connections as they pop up, and I can always trust him to take on the task and get it done well before it's due. I highly recommend John and look forward to using him on future projects.

If I have big ideas or big problems, John is my first call. He has a breadth of technical knowledge, but somehow has superlative responsiveness and communication skills as well. We retain John on a monthly basis for DMARC, email security, and deliverability, and have engaged him for strategy projects — in one case even purchasing his time as an incentive for one of our biggest clients, who fell in love right away with his white-glove service.

JD Tech has been one of the most knowledgeable firms we've ever hired to handle our email deliverability and DNS health. If you're serious about developing an outbound cold email strategy — or even if you aren't doing much outbound but want to increase your email health — JD is hands-down among the top experts, not only in the US but internationally. Fantastic company.

John is an outstanding and highly professional IT resource. He diagnosed our issues quickly and methodically, working closely with 3rd parties to deliver the best solution. I highly recommend, and expect to be in touch again in the future.

I hired John as an email deliverability specialist and am thoroughly impressed. We were facing some challenging email delivery issues, but John tackled the problem with exceptional expertise and ease, and was always willing to work around my availability. If you're facing email issues, he's undoubtedly the go-to guy — his blend of expertise, customer service, and flexibility is genuinely a rare find. 10/10 would definitely hire again!

Working with John was a dream! I hired him for a domain switch in Google Workspace as part of a rebranding project for our nonprofit. His expertise is unparalleled, he's trustworthy and personable, and he made sure I understood each part of the process. The switch was seamless, and he even identified and fixed deliverability issues with our DNS that I wasn't even aware of. There are many options out there at a wide range of rates, but hiring John is 100% worth it — you truly get what you pay for.

I can confidently say John's the best professional we've ever engaged. We brought him a large project and a big challenge — improving our email deliverability, optimization, and measurement across hundreds of campaigns, and teaching us to become experts ourselves. He helped us accomplish every one of our goals and measurably improved our results. We would unreservedly and enthusiastically recommend him.

John was exceptional. He helped us set up and secure our Microsoft 365 infrastructure, provision domains, implement strong email security, and harden the overall ecosystem in preparation for growth. What stood out most was his ability to translate complex technical decisions into clear, practical guidance.

I've been in the email game for 15+ years. John is good, VERY good. Will be working with him from here on out for anything email related.

John helped me migrate my company's entire email system from GoDaddy to a corporate Google Workspace. He worked into the evening to make sure that if there was any downtime between cutting the email over, it would be after hours (there was no downtime!). One of the better IT professional experiences I have had in my 20-year career.

John is a true professional and an absolute expert in email deliverability. His understanding of SPF, DKIM, DMARC, and advanced routing inside Klaviyo was exactly what we needed. He didn't just fix the issues — he built systems that continue to monitor and improve deliverability across platforms.

John is the first person I've hired on Upwork who works harder than I do. Day or night, rain or shine, John was there to manage and execute on a complex migration project under time pressure. He asked great questions and always followed through. 10/10 would recommend.

John is amazing — gets the job done right the first time. Always available and goes the extra mile. My company has been developing software since 1998 and I have hired many consultants in IT and engineering. I will not hesitate to contact John for all our future IT tasks.

John is a fantastic communicator and qualifies as an expert in his field. He's a rare find and easily exceeds a 20x benefit to cost ratio. You'll know you picked the right guy the moment you get started with him.

John has been such a positive asset to our organization. Prompt to respond, quick to solve a problem or complete a task. Since a large amount of our company is remotely operated, John's IT expertise has been crucial for our technical side to run smoothly.

All I can say is John is a Master in IT. Your dedication and expertise have truly made a remarkable impact on our team. Quick response time to technical issues has been instrumental in minimizing downtime and ensuring seamless operations. If you need an IT, hire John. You won't regret it.

John did an outstanding job with the email migration project. He approached the task with precision and attention to detail, ensuring that every aspect of the migration was executed smoothly and without interruption to daily operations. The end result was a seamless transition to the new email system.

John is not just a problem solver, he is a problem preventer, constantly thinking steps ahead. His communication skills are unparalleled — he possesses an innate ability to explain complex issues with clarity and precision, making collaboration seamless and efficient.

John was EXCELLENT at providing our agency the IT support we needed. As a small agency with no IT department, it was critical we had an expert helping us make the transition when we completely rebranded. John held our hands through the entire process, ensuring all of our accounts were set up properly and securely.

John is an absolute pro when it comes to email deliverability. He quickly pinpointed my issues, offered clear and practical solutions, and very patiently guided me every step of the way. After getting burned by cheaper providers, working with John was incredibly refreshing; he genuinely cares, knows what he's talking about, and consistently goes above and beyond. Highly recommend him if you want real results.

John was excellent to work with — responsive, proactive, and highly knowledgeable. He quickly identified and resolved email security and spam-filtering issues, and helped us smoothly implement improved security protocols. His clear communication and willingness to dive into detailed troubleshooting made the entire process easy. I highly recommend John for reliable, expert IT support.

John has been an incredible help to my business and team. He not only thinks outside the box to find solutions but is also extremely fast to respond, exceeding my expectations. He has continued to help with IT and technology connections as they pop up, and I can always trust him to take on the task and get it done well before it's due. I highly recommend John and look forward to using him on future projects.

If I have big ideas or big problems, John is my first call. He has a breadth of technical knowledge, but somehow has superlative responsiveness and communication skills as well. We retain John on a monthly basis for DMARC, email security, and deliverability, and have engaged him for strategy projects — in one case even purchasing his time as an incentive for one of our biggest clients, who fell in love right away with his white-glove service.

JD Tech has been one of the most knowledgeable firms we've ever hired to handle our email deliverability and DNS health. If you're serious about developing an outbound cold email strategy — or even if you aren't doing much outbound but want to increase your email health — JD is hands-down among the top experts, not only in the US but internationally. Fantastic company.

John is an outstanding and highly professional IT resource. He diagnosed our issues quickly and methodically, working closely with 3rd parties to deliver the best solution. I highly recommend, and expect to be in touch again in the future.

I hired John as an email deliverability specialist and am thoroughly impressed. We were facing some challenging email delivery issues, but John tackled the problem with exceptional expertise and ease, and was always willing to work around my availability. If you're facing email issues, he's undoubtedly the go-to guy — his blend of expertise, customer service, and flexibility is genuinely a rare find. 10/10 would definitely hire again!

Working with John was a dream! I hired him for a domain switch in Google Workspace as part of a rebranding project for our nonprofit. His expertise is unparalleled, he's trustworthy and personable, and he made sure I understood each part of the process. The switch was seamless, and he even identified and fixed deliverability issues with our DNS that I wasn't even aware of. There are many options out there at a wide range of rates, but hiring John is 100% worth it — you truly get what you pay for.