THIS ARTICLE IS FOR: All ListKit customers
Stage: Onboarding / Live
Owner: CS
Last updated: Aug 2026
TL;DR
Adding your signature to campaigns is a two-step process
Step 1: set your signature on your sending inboxes inside Email Engine
Step 2: add %signature% in the body of your email sequence where you want the signature to appear
Do Step 1 before Step 2: your signature needs to be saved on your inboxes first
Step 1: Set your signature on your inboxes
Before adding a signature to your campaign sequence, you need to save it on your sending inboxes first.
Go to Email Engine in the left sidebar and click Inboxes.
Find the inbox you want to update, click the three dot menu on the right side of the row, and select Update Email Signature. Type your signature in the text field and click Save.
Repeat this for every inbox you want the signature applied to. You can also select multiple inboxes and use the Update Signature bulk action from the bottom bar to apply the same signature to all of them at once.
For a full walkthrough on setting up your inbox signature, see: How do I update my email signature in Email Engine?
Step 2: Add %signature% to your campaign sequence
Once your signature is saved on your inboxes, open your campaign sequence and add the following variable exactly where you want your signature to appear in the email body:
%signature%
Type it manually at the bottom of your email step, after your sign-off line.
When the email sends, %signature% will be automatically replaced with the signature saved on whichever inbox is sending that email.
Frequently asked questions
Does %signature% work on follow-up steps too?
Yes. You can add %signature% to any step in your sequence, the initial email and any follow-ups.
What if I have different signatures on different inboxes?
Each inbox pulls its own saved signature. If you have two personas with different names, each inbox will insert the correct signature for that sender automatically.
My signature is not showing up in sent emails, what do I check?
Make sure the signature is saved on the inbox that is sending the campaign, and that %signature% is typed exactly as shown with the percentage signs on both sides and no extra spaces.