Hi There,
Gone through your requirement. We completely understand your pain point. One of our client also faced the same issue in their email marketing campaigns. Following are the possible solutions you can opt to avoid this:
1. Do not use your personal or any gmail Id for bulk email.
2. Opt for some good email client such as moosend, mail chimp or constant contact etc.
3. Get the DKIM stamp of approval
4. Set up your SPF record
We are new to this platform, but we are digital marketing team of about 7+ experience in SEO, SMO,PPC and Email Marketing. We can surely help you in this. Waiting for your response. Ping us on Chat.
Regards,
The Digital Coder