I with my team have been working on something called a personalized email campaign. Where we research about the prospect, and find and write a line that is only relatable for the person to whom the email is being sent giving the impression of a personalized campaign rather than mass outreach.

Drop me an email at redacted and I can share you an example of how exactly it looks like for your better understanding.

Very similar, we have been using personalised cold emails changing a few lines. Additionally if can find owner contact information and feel is a top tier target have been sending packages with a similar letter and company branded chocolate bars

Using hubspot has been quite beneficial managing the process.