Solutions Through IT

December 1, 2011

Office 365–Email failure?

Filed under: Cloud, Outlook — solutionsthroughit @ 16:06

I’ve been made aware of yet another “you need to know this” about Office 365.  Depend on the 365 plan that is chosen, there may be an issue with the maximum number of email recipients you can send in a 24 hour period.  500.  Sounds like quite a few doesn’t it?  I’ve had a look, I’m averaging sending 50-80 emails a day.  BUT the limit isn’t per email.  It’s per recipient.  So if you were to have a collaborative email with Bill, Bob, Charles and Dianna, that’s FOUR of your five hundred email recipients gone.  Back and forth 10 times, you’ve exhausted almost 10%  of your daily allowance, and you’ve only settled on the first discussion point.  Then factor in all the different recipients that you do, and suddenly 500 recipients doesn’t look like such a big number.

Want to send out a marketing list? Newsletter? Product update?  Good luck with that, you’re going to have to find an alternative.

The limits are reasonably high, but the problem is that they’re inflexible.  You can’t change this.  If this is a problem, or becomes one, you’re going to have to do a workaround, or distribute your newsletter over multiple days!




  1. HI Robert, Thanks for this – I was going to add to this, but you’ve beaten me to it.

    This isn’t a hosted “bash”, just something that most people (let alone tech’s) wouldn’t expect to exist – I know that I wasn’t expecting a hard limit like this.

    Comment by solutionsthroughit — December 3, 2011 @ 15:21

  2. Important to note that distribution groups only count as a single recipient. Thus, you can do mass mail outs and as always the best practice is to use distribution groups. Also, the messaging limits are much greater from the enterprise licenses.

    Robert Crane

    Comment by Robert Crane — December 3, 2011 @ 12:25

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