Hi,
I will check and fix mail delivery issue in mailwizz and interspire.I have 13 Years of experience in bulk mailing, email marketing.I will configure Postfix, Power MTA ,Interspire, Zimbra, Mauctic and Mailwizz,Sendy,Mumara, SES, Sendgrid, Mailgun mailing application with secured server set up.
Thank you