Best answer

Aweber cancel subscriber

  • 20 April 2021
  • 4 replies


Can somebody help me to ‘delete’ a subscriber from my Aweber list after someone canceled a meeting?

I have this meeting scheduler from Calendly setup to have people book a call. When someone does, I have them subscribed to my Aweber list via Zapier. However, if they cancel the booked call, I would like to remove the subscriber (or have the status changed to ‘unsubscribe’).

I get this error message:

The app returned "Invalid signature. Expected signature base string: 

Invalid signature. Expected sig

I would expect it to unsubscribe/delete based on the 

Subscriber “invitee__email”




Best answer by Arjen 20 April 2021, 21:55

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4 replies

Userlevel 7
Badge +9

Hi @Arjen,


It should be pretty easy to do.


Use the following flow to set this up:

  • Trigger: Cancelled Calendly Event
  • Action: Aweber “Unsubscribe Email” from a Group 

Hi Rob,

This is what I have. It's the required field ‘Subscriber’ that's giving the problem I guess. I have this filled with ‘invitee Email’.



Userlevel 7
Badge +14

Hi @Arjen 

Try this step before: AWeber - Find Subscriber

Then map the returned Subscriber ID from AWeber to the Subscriber field using the ‘Custom’ mapping option.


Thanks, I finally managed to get it to work with the ‘find subscriber’ step.