I am expert in email marketing.i have 5 years+ experience on this field.
Many of them are using sendlane,sendin blue for email marketing.
But They are usually appear on customers spam folder,they never going to see it.
But i am offering i can send 1000 emails/day from a Google-MAIL account.
You have to provide me the list and source gmail account info,thats all.
If You have any further questions,just message me here,Price will be negotiable !