Shopify Email Not Sending? Causes, Fixes & Deliverability Guide

When Shopify Email is not sending, customers do not just miss a message. They miss order confirmations, shipping updates, password resets, abandoned checkout reminders, and marketing campaigns that keep the buying journey moving.

Around 16% of customers report not receiving order confirmations as a top cause of post-purchase anxiety, and email that lands in spam can quietly reduce repeat purchases before you notice the pattern.

The tricky part is that “not sending” is often a shorthand for several different problems. Shopify may never have triggered the email. Shopify may have sent it, but the recipient server blocked it. The email may be sitting in spam. Or a tool like Klaviyo or Omnisend may be responsible for the flow and not configured correctly.

This guide helps you diagnose the real cause, fix the parts a merchant can safely handle, and understand when the issue needs a Shopify email or deliverability specialist.

Shopify emails usually fail because the message is not being triggered, the recipient is not eligible to receive it, the sender domain is not authenticated, the email is being filtered into spam, or Shopify Email has hit a sending or billing limit.

Before changing DNS records, editing templates, or reinstalling apps, check the email log. The log tells you whether Shopify attempted to send the message, which determines the next troubleshooting path.

Before fixing anything, identify the symptom. This one distinction prevents most wasted troubleshooting.

Where to check email logs:

1. Open Shopify admin.
2. Go to Settings.
3. Open Notifications.
4. Select Email logs.

For marketing sends, check Marketing, then Shopify Email campaign reports. For workflow-driven sends, check the relevant app or Shopify Flow run history.

Before paying anyone for email setup, know what Shopify already does automatically.

• Transactional emails such as order confirmations, shipping notifications, password resets, and abandoned checkout messages from the default Shopify sender
• DKIM signing for Shopify-managed sending infrastructure
• Reasonable sending reputation out of the box for the default sender
• Built-in templates for standard customer notifications
• Retry behavior for some soft-bounce situations
• Shopify Email for marketing campaigns, subject to Shopify’s current monthly allowance and pay-as-you-go pricing

Shopify does not automatically configure SPF, DKIM, or DMARC for every custom sender domain, guarantee inbox placement, clean your list, repair sender reputation, or configure third-party email platforms correctly.

If someone charges you for setting up SPF and DKIM while you are only using Shopify’s default sender, be careful. Real email work is custom domain authentication, deliverability cleanup, sender architecture, and platform configuration.

1. The customer is not opted in

Marketing emails will not send to customers who have not accepted marketing. Check the customer profile and confirm the email subscription status before debugging anything else.

2. The custom sender domain is not authenticated

If you changed the sender from the default Shopify sender to an address like [email protected], you need proper SPF, DKIM, and DMARC records. Without them, Gmail, Outlook, Yahoo, and other mailbox providers may reject or junk messages that Shopify technically sent.

• SPF tells receiving servers who is allowed to send for your domain.
• DKIM signs the message so it cannot easily be forged.
• DMARC tells receiving servers what to do when SPF or DKIM fails.

3. The email is landing in spam

Authentication is only the baseline. Emails can still land in spam because of poor sender reputation, high bounce rates, spammy content, low engagement, complaint rates, or a new domain that has not been warmed up.

4. Shopify Email hit a limit or billing issue

Shopify Email has a monthly allowance for marketing emails, with paid usage after that depending on the store setup and current Shopify pricing. If billing or usage is not configured correctly, a campaign may stop sending.

5. The trigger never fired

Order confirmations, abandoned checkout emails, shipping notifications, and custom workflows all depend on the right event. Draft orders, missed checkout email capture, unselected “notify customer” options, or a paused Shopify Flow workflow can all prevent an email from triggering.

6. A marketing app is supposed to own the email

Klaviyo, Omnisend, Mailchimp, and similar apps can replace Shopify’s default emails for certain flows. If Shopify’s default is disabled and the app flow is paused, misconfigured, or not live, customers may receive nothing.

7. The email template is broken

Custom Liquid inside notification templates can fail if the template has a syntax error or references unavailable data.

8. The customer email address is invalid

Typos like gmial.com, missing TLDs, or full mailboxes can cause hard bounces that Shopify will not keep retrying indefinitely.

1. Check email logs. In Shopify admin, open Settings, then Notifications, then Email logs. If the email is not in the logs, the trigger did not fire. If it shows sent, focus on delivery and spam. If it bounced, inspect the address and rejection reason.
2. Send yourself a test. Place a test order or trigger the relevant event using an address you control, then check inbox, promotions, and spam folders.
3. Check sender authentication. Use tools like mail-tester.com and mxtoolbox.com to inspect SPF, DKIM, and DMARC.
4. Check which platform owns the flow. Confirm whether Shopify, Klaviyo, Omnisend, Flow, or another app is responsible for the message.
5. Check sender reputation. For meaningful email volume, use Google Postmaster Tools to understand Gmail reputation signals.

1. Check the customer is actually opted in

Open the customer profile and check the email subscription status. If the customer does not accept marketing, Shopify will not send marketing campaigns to that profile.

2. Authenticate your sender domain

If you use a custom sender domain, open Shopify admin, go to Settings, Notifications, and Sender email, then click Authenticate next to the domain. Shopify will provide the exact SPF and DKIM records to add at your DNS provider. Wait up to 48 hours for propagation, then re-verify.

3. Add a DMARC record

SPF and DKIM are not enough on their own for many senders. Add a DNS TXT record with host _dmarc and a starter value such as v=DMARC1; p=none; rua=mailto:[email protected]. Start with p=none before tightening to quarantine or reject.

4. Decide which app owns each email

If Klaviyo, Omnisend, Mailchimp, or another email app is installed, decide which platform sends each flow. Do not let two systems send the same email, and do not disable Shopify’s default notification unless the replacement flow is live.

5. Clean your email list

Remove invalid, bounced, and inactive emails. A high bounce rate damages deliverability quickly.

6. Warm new sending domains slowly

If you just set up a new sender domain, start with engaged subscribers and scale gradually over two to four weeks instead of sending a large campaign on day one.

7. Fix obvious spam triggers

Avoid all-caps subject lines, aggressive promotional language, single-image emails with little text, broken HTML, and missing unsubscribe links.

If you have checked logs, opt-in status, DNS records, app ownership, and templates, the remaining problem is usually deliverability infrastructure, sender reputation, or platform configuration.

Common deeper issues include DKIM records added but not verified, DMARC policies tightened too early, multiple SPF records, old CNAME records from previous providers, Klaviyo flows left in draft, Shopify Flow workflows paused, customer events configured at the wrong scope, or sender reputation living on a different subdomain than expected.

At that point, the work usually needs someone who understands Shopify email platforms and deliverability, not a general developer guessing inside your DNS.

For specialist help, review Shopify email marketing experts. If you are not sure who fits the issue, use Get Matched.

Authentication is non-negotiable

As of February 2024, Gmail and Yahoo require SPF, DKIM, and DMARC for senders pushing more than 5,000 emails per day. Growing stores can hit that threshold faster than expected.

The default Shopify sender is fine for many stores

Do not over-engineer email infrastructure before the business needs it. If you are sending fewer than 50,000 marketing emails a month, Shopify’s defaults plus a correctly authenticated sender domain may be enough.

Klaviyo and Omnisend are powerful, but migrations are risky

Email platforms can improve segmentation, flows, attribution, and revenue. The risk is migration: duplicated flows, disabled Shopify notifications, broken triggers, and unauthenticated domains.

Spam folder does not always mean broken

Sometimes Gmail sorts messages into Promotions because of engagement patterns, not because DNS is broken. Segmentation and better content can matter as much as technical setup.

Sender reputation takes time

One cold-list blast can damage reputation for weeks. Always warm new domains slowly and prioritize engaged contacts.

Bring in a specialist if:

• Your domain authentication fails and you do not know why
• Emails consistently land in spam despite SPF, DKIM, and DMARC passing
• You are migrating to or from Klaviyo, Omnisend, Mailchimp, or another email platform
• You need custom transactional logic for subscriptions, B2B, multi-language, or multi-domain sending
• You are on Shopify Plus and need a full deliverability audit
• Your sender reputation is already damaged and needs recovery

A good email expert will audit the real cause, configure authentication correctly, set up reputation monitoring, migrate flows without breaking live emails, and document the sender architecture.

What you should not pay for is someone toggling a basic admin setting and calling it deliverability work.

If this is where your store is stuck, work with a Shopify email marketing expert or get matched with the right specialist.

Realistic pricing depends on whether you need simple DNS setup, a deliverability audit, or a full email platform migration.

• Domain authentication setup: $150–$500. Usually covers SPF, DKIM, and DMARC setup for a straightforward store.
• Deliverability audit and remediation: $500–$2,500. Covers authentication, reputation, content, bounce patterns, and engagement issues.
• Klaviyo or Omnisend setup and migration: $1,500–$8,000. Depends on the number of flows, list size, segmentation, and migration complexity.
• Full email marketing program build: $3,000–$15,000+. Includes flows, campaigns, segmentation, reporting, and lifecycle strategy.
• Shopify Plus custom transactional logic: $5,000–$25,000+. Usually involves B2B, subscriptions, multi-language, or multi-domain sending.

If you need help scoping the work, Get Matched can connect you with a specialist for the right level of email work.

If your Shopify emails are not sending, landing in spam, or breaking after an app migration, work with a Shopify email marketing expert who understands deliverability, Klaviyo/Omnisend setup, sender authentication, and broken email flows.

If you are not sure which specialist fits the problem, get matched with the right expert for your store. We will review your store, scope the work, and connect you with someone suited to the issue.

Fix related issues

• Shopify Checkout Not Working
• Shopify Flow Not Triggering

Browse Shopify experts

• Shopify Email Marketing Experts — specialists in deliverability, Klaviyo and Omnisend setup, lifecycle flows, and sender authentication.
• Shopify Marketing and Growth Experts — full marketing and growth support.