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Question

Rule Condition Limit

  • June 10, 2026
  • 2 replies
  • 77 views

infra_team
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Is there a limit to the amount of conditions an inbox rule can have?  We currently have a rule to auto archive based on the From address.  The list of addresses is about 20 long right now, but will we eventually reach a limit if we keep adding them?

2 replies

nikolai
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  • Fronteer
  • June 15, 2026

Hi there,

You shouldn’t run into a hard limit here. We’ve seen others use a single rule with thousands of conditions, and there isn’t an enforced cap.

That said, as the list grows, it can get harder to maintain (e.g., spotting duplicates or fixing a typo), so for long-term manageability you may want to keep the rule organized or consider splitting logic if it becomes unwieldy.


jfranco
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  • Fronteer
  • July 9, 2026

Adding to Nikolai's answer: you're right there's no hard limit, but once a single condition list creeps into the dozens, it's usually easier to move those addresses out of the rule entirely and into a Contact List (Settings > Contacts > Lists). Your rule condition then becomes a single "Contact is in list [X]" instead of 20+ OR'd "From" conditions. Two advantages: the rule itself stays short and easy to audit, and anyone on the team can add or remove addresses from the list without touching the rule logic (so there's no risk of accidentally breaking a condition while editing). If you ever need different handling per sender rather than one blanket action, a Rule Set table (up to 500 rows x 25 columns) is worth a look too — it lets you manage that kind of "many inputs, one pattern" logic as data instead of as one giant rule.