&quot;Hello,
I am a Digital Marketing Specialist for a Creative Agency. 
I was doing some industry benchmarking for a client of mine when I came across your website. 
I noticed a few technical errors which correspond to a drop in traffic on your website over a period of 6-8 months, which I thought I would bring to your attention.
After closer inspection it appears that your site is lacking in 4 key criteria.
1- Website Speed 
2- Link Diversity 
3- Domain Authority 
4- Competition Comparison
I can send you over the report which shows all of the above and so much more which will help you at least improve your site, its rankings and traffic.
I would love the chance to help as well however, this report will at least give you a gauge on the quality of what I do.  If you are interested then please share your requirement and contact details.
Is this the best email to send it to?
Reg