Inbox placement is decided by each receiving mail provider. No sender or app can guarantee the Primary inbox.
Improve recognition
- Use a sender name customers recognize from your storefront.
- Keep the subject accurate and avoid exaggerated punctuation or misleading urgency.
- Send only the back-in-stock message the shopper requested.
- Keep your store name and business address consistent.
- Use a monitored reply-to address on your store’s domain.
Authenticate your domain
Scale stores can set up a custom sending domain. Add every DNS record exactly as shown and wait until Slingshot reports the domain verified.
Authentication helps providers verify the sender, but it does not override each inbox’s classification rules.
Ask recipients to help
A recipient can mark the message as Not spam, move it to Primary, or add the sender to contacts. Avoid asking shoppers to weaken organization-wide security settings.
Measure the pattern
Test several mailbox providers. If only one provider filters the email, focus on that provider’s behavior. If every provider rejects or filters it, review authentication and content before sending more live messages.