Hi Dennis, I can handle everything, and here are the answers:
1. Warming up will take minimum 15-20 days.
2. I send approx. 3500 emails per week from one domain.
3. I check email address with mail-tester.
I can help you to setup and configure Lemlist as I have expertise with the same.
I will create all mailing authentications like spf, dkim and dmarc etc. for better email deliverability.
I have more than 6 years of experience in bulk mailing, email marketing, SMTP'S Power MTA, Interspire, Sendgrid, Mailwizz, Active Campaign, Mautic, Mumara, Sendy, AWS SES and Oempro mailing application with secured server set up.
I would like to have a discussion with you to explain things in a better way.
Thanks