Omnisend Not Working? Common Errors & Fixes

Omnisend spam placement usually traces back to domain authentication, a mismatched From address or sending to a cold list. Authenticate your domain, match the sender address and warm up gradually.

Initial Omnisend sync takes up to an hour and history up to 24 hours. After that, check the app is connected, the app embed is on and remember some mismatches are expected.

If an Omnisend automation sends nothing, check that it is started, then use the trigger preview to see which filter blocks contacts and verify subscription status and channel settings.

An Omnisend popup or form usually fails to appear because of the Shopify app embed, teaser settings, browser privacy tools or a cookie from an earlier signup.

Omnisend SMS fails when credits are 0, numbers are invalid or carriers filter the message. Check credits, number format and the campaign report.

Omnisend suspends email campaigns after a test batch exceeds 4% bounces or 0.1% spam complaints, or when the store is not ready. Clean your list and contact support with proof.

Cancel in Store Settings > Pricing and usage. The paid plan runs to the end of the cycle, data stays read-only on Free, and SMS must be cancelled separately.

Uninstalling the Omnisend app from Shopify starts a 16-day countdown to account deletion. Reinstall or log in before it ends and export data first.

Omnisend bills per billable contact (subscribers plus non-subscribers), so lists grow into higher tiers fast. Trim non-subscribers, drop add-ons you do not use and compare tiers.