Recipient Rate Limit Increase to 10K for Office 365 and Exchange Online


Update 2/26/2013: In response to your feedback, we have also raised the limit for Office 365 for Education plans (A2, A3, A4) to 10,000 recipients per day.

In response to feedback from our customers, we have increased the recipient rate limit within Office 365 Enterprise (E1, E2, E3, E4, K1, and K2), Professionals and Small Businesses (P1), and Government plans (G1, G2, G3, and G4) to allow users to send email to up to 10,000 recipients per day. These new limits also apply to standalone Exchange Online plans (Kiosk, Plan 1, and Plan 2). Previously, the recipient rate limit for users of these plans had been set at a maximum of 1,500 recipients per day.

Recipient rate limits exist to discourage users from sending large volumes of unsolicited commercial email, commonly referred to as spam. These limits protect our online service from becoming a source of spam and, as a result of these protections, keep our customers’ email messages flowing. Datacenter enhancements have allowed us to increase this limit while maintaining the same level of protection.

These limits apply both to email messages sent within an organization and those delivered to external organizations. The best way to avoid exceeding the recipient rate limit is to use distribution groups when sending messages to large numbers of recipients. Distribution groups stored in the shared address book are counted as a single recipient toward the recipient rate limit. For more information, see Strategies to Support Bulk Email. Office 365 customers who need to send legitimate bulk commercial email — such as customer newsletters – should continue to use third-party providers that specialize in these services.

If you would like more information on recipient rate limits, see Bulk Email and Daily Recipient Rate Limits. We made this change because of your feedback. Thank you for sharing your thoughts with us, and please keep it up!

Steve Chew

Comments (8)
  1. Mike Merker says:

    Do education customers on "A" plans qualify for the new recipient limit as well?

  2. schew56@outlook.com says:

    Hi Mike – No, the new recipient rate limit does not apply to "A" plans.

  3. WhyNot? says:

    Any reason why not?   Schools and districts need to send email to thousands of parents.  Trying to manage these parents in groups, is not feasible for large districts.  

    My district alone services approximately 40,000 students.  Some of these students have divorced parents where we must send email to both.

    In the wake of recent events, there is an ever-increasing need to be able to communicate with Parents.  1500 is very limiting.  I hope Microsoft will take another look at this.

  4. Tim Beske says:

    Does this apply to Office 365 for Education Plans?

  5. schew56@outlook.com says:

    WhyNot?: The highest risk of spam generation currently comes from Academic users.  We definitely undestand the need for our Academic customers to have higher receipient limits, and we'll continue to investigate a solution that allows us to maintain the same level of protection.

  6. Mike Merker says:

    Steve – so if I have a GAL distribution list with 40,000 users on it (a real situation as we are a community college), I can still send to that list successfully, even if the addresses are outside my Exchange organization?  Couldn't a spammer simply upload a list to a GAL and spam away to their heart's content?  Or, did I misunderstand the information in your post?

  7. JeanJean says:

    From a technical point of view, with a kind of tools can you apply this sort of limit ?

  8. MW says:

    Was this effective from the date of your post and automatic?  THANK YOU for making this adjustment!

Comments are closed.