Within Teamwork Desk, there are limits in place to improve deliverability and prevent misuse of the email service that could result in blacklisting.

Receiving email

For all accounts, the limit is:

  • Daily limit of 16,000 messages
  • Hourly limit of 4,000 messages
  • Ten-minutely limit of 150 messages
When this limit is reached emails will be temporarily blocked and email delivery will be delayed. After 8 hours it is considered permanently failed.

Sending email

For all verified domains there is a daily limit of 4,000 messages.

For all unverified domain there is a limit of 25 tickets per day.

Your domain is considered unverified until the following are met:

  1. You have validated your domain via DNS CNAME records
  2. You have a paid subscription and have a valid credit card on file
If you would like to request an increase in tickets allowed per day, please contact us at desk@teamwork.com and we will endeavor to accommodate you.

Note: Ticket limits can only be increased for verified domains.

Message contents

For allverified domains there is a limit of 50 recipients per message.

For all unverified domains there is a limit of 10 recipients per message.

The recipients are the customer + CC + BCC.

Ticket limits and attachments

  • Ticket sizes are limited to 25MB.
  • Total attachment size for a ticket is limited to 20MB.
    • Most file types are supported in ticket attachments as long as they fall within the 20MB total attachment limit for the ticket.
  • Attachments from previous messages in the ticket will be added as links into the body of the message. These files will be available download by anyone with the link and expire after 30 days.

Storage space

There are no limits on storage space.


The Teamwork Desk API is limited to 120 requests per minute. If this limit is reached Desk will respond with 429 Too Many Requests.

Desk will also set the X-Rate-Limit-Limit, X-Rate-Limit-Remaining, and X-Rate-Limit-Reset headers, so you can check how many remaining requests you have.

For more information, see: Adding DNS records to verify your domain