1. Why do emails go to spam?
   The main mistake you can make is sending multiple messages to different recipients with the same title. It is also important to avoid words that may qualify the mail as spam, e.g. “Offer”, “buy now”. It is also worth making sure that the information about the sender is not misleading, so the signature must contain the necessary company data. Also, remember not to send too many attachments as they can be treated as malware.

2. How to find someone’s e-mail address?
   One of the effective methods of obtaining e-mail addresses is the use of their search tools, e.g. Hunter, Voila Norbert or FindThatLead. Social media, especially LinkedIn and Facebook, are also helpful in searching for contact. This method is not always effective, but many people for whom we are looking for e-mail provide it on their profiles.

3. How to encourage the recipient to contact you back?
   It is important to define the purpose of the message, usually in the form of an invitation, proposal, but not a commercial offer! It is also important to introduce your company, briefly describe what it does, introduce yourself, and ask for a specific date for a telephone interview. It is worth establishing contact in social media with recipients, because they are more likely to reply to e-mails to companies they already know. The content of the e-mail should demonstrate the benefit of contacting the company for the recipient. Elements such as theme, personalization and relevance are key

Source: https://respona.com/blog/#email-outreach