Partnership Question: Rate Limit Issue

0 Votes

Hey ConstantContact Support,

My company (StellarAlgo) became partners with you guys a few years back as we have a lot of clients which we pull in constant contact data for. We partnered as we were running into rate limit errors a lot. We also changed our app structure and now we create a new constant contact App for each client that we pull data for as opposed to using the single app for all clients.... 


We just started running into rate limit errors again and I just wanted to confirm a few things. 

-  Now that we are partners, do we have an increase in rate limits and what is it?
- Are the rate limits per app integration that we create? If we have a 100,000 request limit.. Is this for ALL our app integrations or does each app integration have a 100,000 rate limit
- Are we able to request an increase in rate limits now that we are partners? If yes, how are we going to go about that process?
- I assume we also have a limit on how many requests we can make per second? Can this rate also be increased? Assuming 5 "data pulls" run in parallel and are all hitting the API at the same time, Is there a way to avoid a Too Many Requests Error ? OR Do we have to ensure that no two (or more) app integrations are pulling data from the API at the same time.. 

0 Votes

Hello SeyiK99,


Thank you for reaching out to Constant Contact API Developer Support. My team is here to assist outside software developers with questions about building into Constant Contact's API.


Rate limits are set per API key/application rather than per account. Our Partner rate limits are 250,000 requests per day and 10 requests per second. These rate limits are configured upon request to our API Support team and are not automatically applied upon API key generation. If you’d like to confirm the rate limits of any existing key on your account or request that the rate limits of a newly generated key be increased to the Partner rate limits, please feel free to reach out to our API Support team at and specify the API keys that you’re inquiring about. 


Please have a look and let us know if you have any other questions!



John B.
API Support Specialist
Did I answer your question? If so, please mark my post as an "Accepted Solution" by clicking the Accept as Solution button in the bottom right hand corner of this post.
Developer Portal

View API documentation, code samples, get your API key.

Visit Page


API Updates

Join our list to be notified of new features and updates to our V3 API.

Sign Up