Sending bulk emails with Outlook365

[IcarusHallsorts]

I generate multiple emails from various applications, typically invoices, statements, payslips etc.

It pops them into a drafts folder within Outlook365, and I have a VBA macro which sends all the drafts I have selected.

However, since moving to the 365 platform, I find that many emails do not get delivered. My understanding is that this occurs because Microsoft are blocking what they perceive as being junk mail.

I have tried using a third party SMTP relay service, but O365 will not permit it to be configured to use a different SMTP server.

Two questions -

How long need I wait between sending emails for Microsoft not to treat my batched emails as junk? and also
What code would I need to insert before the NEXT statement to effect a delay of xxx seconds?

All suggestions appreciated

Thanks

 

[Andrzejek]

I had exactly the same issue some years ago, so I've talked to my Exchange Server people to mark my application as a 'trusted' source (or whatever they needed to do) to allow many e-mails generated by my app to not be blocked.

My e-mails were not 'drafts', they just went straight from my VB6 app to a mail server.

---- Andy

"Hmm...they have the internet on computers now"--Homer Simpson