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

Receiving email

For all accounts:

  • Daily limit: 16,000 messages
  • Hourly limit: 4,000 messages
  • Ten-minutely limit: 50 messages
When these limits are reached, emails are temporarily blocked and email delivery will be delayed. After 8 hours, it is considered permanently failed.

Sending email

  • Verified domains: Daily limit of 4,000 messages.
  • Unverified domains: Daily limit of 25 tickets.
Your domain is considered verified once the following are met:
  1. Your domain is validated via DNS CNAME records.
  2. You have a paid Teamwork Desk subscription and have a valid credit card on file.

Ticket limits can be increased for verified domains on a case by case basis.
  • 📩 If you would like to request an increase in tickets allowed per day, please contact us at support@teamwork.com to discuss your options.

📝 During your trial period, there will be limits on the number of tickets that can be sent. Tickets and replies will also include a "Sent using Teamwork Desk" watermark in the signature. If you need assistance during your trial, please let us know at support@teamwork.com.

Message recipients

Recipients include the customer, any CCs, and any BCC.

  • Verified domains: Limit of 50 recipients per message.
  • Unverified domains: Limit of 10 recipients per message.

Ticket contents and attachments

  • Characters: Each reply on a ticket is limited to a total of 1,038,336 characters.
    • Quoted content included in a reply counts towards the character limit.
    • When a reply exceeds the limit, you will be given an option to send the reply without the quoted content.
  • Content: Each reply or note is limited to a total content size of 5MB.
  • Attachments: Each reply has a 20MB total size limit for attachments.
    • This same limit also applies when merging tickets into a single ticket thread.
    • Most file types are supported in ticket attachments as long as they fall within the 20MB limit.
    • Attachments from previous messages in the ticket will be added as links into the body of the message. These files will be available for 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 also sets 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