Page tree

Versions Compared


  • This line was added.
  • This line was removed.
  • Formatting was changed.


  • Customizable: you can tell MailUp when to make that call, to which URL, and what parameters to include in the call
  • Smart: if the receiving server does not respond successfully, MailUp will try again (it retries 5 times, every 5 minutes for a total of 25 minutesover a 25 hour period, see detailed in the information box below)
  • Standardized: the way information is provided to the receiving end (the "Callback URL") follows certain standards that make it predictable. The Web page that receives the call (the "Callback URL") can be programmed in any programming language.
titleAttempts retry schedule

In case there is no successful handshake, the callback is repeated according to the following schedule:

  • 3 times every 5 minutes
  • 3 times every 15 minutes
  • 3 times every 2 hours
  • 3 times every 6 hours

Viewing existing Webhooks