Delays for Newsletters Sent to Microsoft Inboxes

Hi,

We have recently experienced significant delays when sending newsletters to Microsoft inboxes.
Has anyone else seen similar issues? At the moment, the delay is around 8 hours.

We’re looking for any tips on how to reduce this delay. We’ve already contacted Microsoft, but their response so far is that everything appears to be functioning normally on their side.

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Comments

stefanie.baldwin

Hi @Mari,
Let's see if our Braze Support Team can lend a hand by reviewing?
If you haven't already, may I trouble you to submit a support case?

If you're not sure how to reach Braze Support to submit the case, I can help to direct you.

Composed_Nick

By delays are you talking about deferrals?

The way we monitor these for our clients is we will look after a large volume send and see if the deferral rate is spiking. If it is, that is often a sign of too much volume in a given period. Microsoft is fairly temperamental with deferrals so there may be a need to divide out the Microsoft domains into a slower sending path with a canvas or duplicate campaign for a period. Building up the rate limit at which you send to Microsoft specifically.

Nirnay

what a coincidence @Composed_Nick ! I have just published an article on Linkedin about domain level throttling in braze.
@Mari Find the aritcle here. This might help you.

Composed_Nick

This is a very cool solution! love it

Mari

Thanks @Nirnay , this could be an option for us too. I'll check!

Mari

Hi @StefanieB , yes, I’ve created a ticket. The issue is on Microsoft’s end, so unfortunately Braze Support is unable to assist with this.