Sender Not Working? Common Errors & Fixes

Sender suspends accounts that exceed its anti-spam thresholds (0.15% complaints, 5% bounces, 1% unsubscribes) or send prohibited content. Read the reason in the suspension email, clean the list, then appeal via LiveChat or support@sender.net with proof of opt-in.

Every Sender account goes through Quality Assurance review after you verify a domain, import subscribers and create a campaign. Fill in company details, verify a domain that matches your website, and answer QA's email; review usually takes under an hour on business days.

Sender campaigns land in spam mostly because SPF, DKIM or DMARC are missing, the From address does not match the verified domain or is a free Gmail address, or the list has bounces and complaints. Authenticate the domain and clean the list first.

Sender needs a DKIM CNAME sender._domainkey pointing to dkim.sendersrv.com, an SPF TXT including sendersrv.com and a DMARC TXT at _dmarc. Most failures come from a second SPF record, the DNS provider appending the domain twice, or propagation delay.

A Sender popup that never appears is usually still a draft, has no trigger enabled, or the universal.js snippet is missing from the page head. Publish it, enable a trigger and test in an incognito window.

If signups appear in form statistics but not in your list, the form usually has no group selected in Settings > Groups. Assign a group and check notification settings.

Sender accepts CSV, TXT or XLSX files under 64 MB with headers in row 1. Most import failures come from missing headers, malformed emails, or blank rows and columns; Sender's own template fixes most cases.

Abandoned cart emails in Sender need an active store connection, cart tracking enabled (automatic on Shopify, a toggle in the WooCommerce plugin) and the workflow set to Active.

Sender blocks campaign sending when your active subscribers exceed the plan or you run out of monthly email credits. Remove inactive subscribers (the count updates hourly) or upgrade; email credits reset at the next billing cycle.

Cancel Sender in Account settings > Billing > Change or renew plan > Cancel recurring payment. Paid features last until the Valid until date, then the account drops to Free with data kept. Refunds are only given when Sender ends service without cause.