Trusted by Businesses Across New England for 35+ Years

"With our previous MSP, we had ransomware that shut down our business for days. Since switching to Craig, we've had zero problems. I would recommend him to anybody. He displays a genuine concern for our cyber well-being and certainly a great amount of knowledge."

"In my 25+ years in the IT business I have yet met someone more knowledgeable and more committed to getting it right than Craig and his team. From the project managers to the technicians the team was top notch. I would gladly recommend Craig and his company to any business looking for technology services."

"One of the things that I've come to trust with Craig and mainstream is that they're honest, they have our backs and they let us know what's going on. I trust that big things aren't going to go wrong. And when they do, they've always been extremely responsive."

"I had a need for the personal service. I had a need to be heard. My mental health was absolutely suffering as a result of their incompetence. The reason why I picked Craig was because I believe that he was going to invest his time in me personally."

"I want to extend my personal gratitude for your extra work on our behalf this week. We have had some significant problems to start 2025 and I am grateful for you and your team."

"That's easy. It's that personal touch. We like having them close by... they have the small town feel with kind of a global reach in terms of backup storage locations and all of the things that you really want."

"We've never been able to find an IT Service Provider that could handle all our IT needs. When all other worldwide divisions were shut down for almost two weeks, Craig and his team were able to keep us online without a sign of the ransomware that hit everyone else."

"I had a need for the personal service. I had a need to be heard. He displays a genuine concern for our cyber well-being and certainly a great amount of knowledge."

"Your unfailing output of valuable tech resources is so much appreciated. I hope that a fair number of us successfully follow your counsel and take steps to protect our businesses in a way that would make you proud of us."

"Craig was recommended to me by a business consultant as The 'go-to guy' for business internet solutions. Each time that I work with him I expand my knowledge base and I can not speak highly enough about his grasp of all things technical, business and marketing related."

"We found Craig to be a thorough, experienced professional. His depth of knowledge was instrumental in helping us avoid what would have been very expensive mistakes. If you ever consider working with a partner, you will want to work with Craig and his team. I would work with him again in a New York minute."

"You will be hard pressed to find a Network Security expert whose technical acumen and project management skills match Craig's. He comes with my highest recommendation, he is a leader in the field."

"Craig has been able to help my company get out of numerous computer and network issues and has been very timely as needed to keep our company operating when systems were down. I find that Craig is always on the leading edge of technology far more than most individuals are!"

"The email upgrade looks pretty cool... Works like a charm. It rocks AND it rolls. Very nice."

"Craig had stepped into the mess left by another company, figured out what they were trying to do and what the client really needed, created a plan to meet the client's goals, and executed without the slightest hesitation. While all of this was happening, he positively and effectively dealt with a team of Fortune 500 executives desperate for a solution."

"Craig was a favorite 'live' guest on our information/lifestyles program. A frequent and popular contributor, Craig delivers an unequaled knowledge and enthusiasm as an expert in technology products, consumer electronics, and internet security. Our television station and viewing audience of nearly 2 million homes relied on Craig's expertise."

"R. Craig Peterson's an ideal choice for insuring the integrity and security of your data. His knowledge, experience and innovative abilities can help you stay ahead of the ever increasing network security threats facing corporations today."

"Thanks to your call we realized that someone had made a mistake updating the SPF record for our domain. We were able to get that corrected. I appreciate you letting me know."