Invoice Links going to Spam Folder

Invoice Links going to Spam Folder

Hi,

The auto-generated "Pay Now" links from ZBooks that link from an invoice / email to the payment portal (Stripe in this instance) are causing all of our emails to go into the spam / junk folder.  

We send these to our customers and follow up with a phone call and they always say it's gone to spam or junk, and if we send the same link through Office 365 instead of Zoho Mail, it goes into the Office 365 abuse folder.

Our emails are fully setup with correct DKIM and SPF records, but this is becoming a big issue for us now.