Email is not sending out of sudden

Hello @mzn001,

Please follow these steps to find out if the issue occurs before the message is sent:

? ??
1. Install and activate the WP Mail Logging by MailPoet plugin
2. Open an existent order, find the Send order email panel, on the right side, select one of the email notification in which you attach the invoice, e.g. Complete order, and click on Save order and send email:

   

3. Then go to Tools > WP Mail Log, find your last email, and check if there are files in the Attachments column, and/or any notice on the Error column:

   

4. Share the results with us ??

On the other hand, to increase the WP Memory Limit, you just need to add this line in your wp-config.php file (located in the root directory of your WordPress installation), before the line that says “Happy publishing” (or “Happy Blogging”):

/* Increase the WP memory limit to 256MB */ 
define('WP_MEMORY_LIMIT', '256M');

Let me know if it works ??

Hi again @mzn001,

Could you please provide this extra info:

1. Does your site happen to be hosted by SiteGround? If not, could you tell us the name of the hosting provider you’re using?
2. Also, go to WooCommerce > Status > System Status, click on Get system report, then click on Copy for support, and finally paste the content in a reply here.

Hi Yordan,

Thank you so much for your swift response! I’ve tried the given steps:

1. I have installed and activated the WP Mail Logging by MailPoet plugin

2 & 3. I have triggered New Order email notification (with one of the existing orders) to Admin email but nothing was sent to our mailbox and nothing was logged in WP Mail Log too. Screenshot: https://imgur.com/LWM8HbT

4. I have amended wp-config.php in my FTP but I am not sure if this was the root cause. I have tried Step#2 and 3 again after this amendment but nothing was sent as well. Screenshot: https://imgur.com/m6VkRNu

5. Yes! I am using SiteGround ??

6.

### WordPress Environment ###

WordPress address (URL): https://-----.com
Site address (URL): https://-----.com
WC Version: 5.6.0
REST API Version: ? 5.6.0
WC Blocks Version: ? 5.8.0
Action Scheduler Version: ? 3.2.1
WC Admin Version: ? 2.5.1
Log Directory Writable: ?
WP Version: 5.8.1
WP Multisite: –
WP Memory Limit: 768 MB
WP Debug Mode: –
WP Cron: ?
Language: en_US
External object cache: –

### Server Environment ###

Server Info: Apache
PHP Version: 7.4.23
PHP Post Max Size: 256 MB
PHP Time Limit: 120
PHP Max Input Vars: 3000
cURL Version: 7.66.0
OpenSSL/1.1.1l-fips

SUHOSIN Installed: –
MySQL Version: 5.7.32-35-log
Max Upload Size: 256 MB
Default Timezone is UTC: ?
fsockopen/cURL: ?
SoapClient: ?
DOMDocument: ?
GZip: ?
Multibyte String: ?
Remote Post: ?
Remote Get: ?

### Database ###

WC Database Version: 5.6.0
WC Database Prefix: wpvt_
Total Database Size: 214.99MB
Database Data Size: 137.52MB
Database Index Size: 77.47MB
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### Post Type Counts ###

attachment: 2165
br_sale_report: 1
custom_css: 1
customize_changeset: 9
faq: 10
nav_menu_item: 28
notificationx: 1
page: 26
porto_builder: 22
post: 1
product: 804
product_variation: 6
revision: 743
schema: 2
shop_coupon: 5
shop_order: 5187
shop_order_refund: 47
wpcf7_contact_form: 6
yith_wcan_preset: 1

### Security ###

Secure connection (HTTPS): ?
Hide errors from visitors: ?

### Active Plugins (44) ###

WooCommerce Advanced Product Labels: by BeRocket – 1.2.3.1
Beeketing For WooCommerce: by Beeketing – 3.8.16
Click to Chat: by HoliThemes – 3.3.10
Contact Form 7: by Takayuki Miyoshi – 5.4.2
Cost of Goods for WooCommerce: by WPFactory – 2.4.7
Disable Comments: by WPDeveloper – 2.1.2
Dynamic Featured Image: by Ankit Pokhrel – 3.7.0
Site Kit by Google: by Google – 1.40.0
Insert Headers and Footers: by WPBeginner – 1.6.0
Intuitive Custom Post Order: by hijiri – 3.1.3
Jetpack: by Automattic – 10.1
WPBakery Page Builder: by Michael M - WPBakery.com – 6.7.0
Newsletter: by Stefano Lissa & The Newsletter Team – 7.2.3
Ni WooCommerce Sales Report: by anzia – 3.5.5
NotificationX: by WPDeveloper – 2.0.2
Porto Theme - Functionality: by P-Themes – 2.1.6
Post Duplicator: by Metaphor Creations – 2.23
Product Batch & Expiration Tracking for WooCommerce: by Webis – 1.5
Product Sales Report for WooCommerce: by Aspen Grove Studios – 1.5.1
Regenerate Thumbnails: by Alex Mills (Viper007Bond) – 3.1.5
Slider Revolution: by ThemePunch – 6.5.4
Sales Report for WooCommerce: by BeRocket – 3.5.7.1
Schema: by Hesham – 1.7.9.2
Stock Exporter for WooCommerce: by Webdados – 0.8.2
WC Hide Shipping Methods: by Rynaldo Stoltz – 1.5
Checkout Field Editor for WooCommerce: by ThemeHigh – 1.4.9
Free Shipping Bar for WooCommerce: by VillaTheme – 1.1.4.9
WooCommerce Blocks: by Automattic – 5.8.0
WooCommerce - Store Exporter: by Visser Labs – 2.7
WooCommerce PayPal Checkout Gateway: by WooCommerce – 2.1.2 (update to version 2.1.3 is available)
WooCommerce Stripe Gateway: by WooCommerce – 5.4.1
WooCommerce Google Analytics Integration: by WooCommerce – 1.5.3
WooCommerce PDF Invoices & Packing Slips: by Ewout Fernhout – 2.9.3
WooCommerce: by Automattic – 5.6.0
WooHistory - WooCommerce Order History: by WPSlash – 1.1
Wordfence Security: by Wordfence – 7.5.5
Yoast SEO: by Team Yoast – 17.1
WP Fastest Cache: by Emre Vona – 0.9.3
WP Mail Logging: by Wysija – 1.9.9
WP Sitemap Page: by Tony Archambeau – 1.6.4
WPS Hide Login: by WPServeur
NicolasKulka
wpformation – 1.8.6

YITH WooCommerce Ajax Product Filter: by YITH – 4.1.1
YITH WooCommerce Ajax Search: by YITH – 1.10.0
YITH WooCommerce Wishlist: by YITH – 3.1.0

### Inactive Plugins (9) ###

Contact Form CFDB7: by Arshid – 1.2.5.9
Flexible Checkout Fields: by WP Desk – 3.0.11
Free shipping notification WooCommerce Pro: by PI Websolution – 1.3.0
Google Analytics for WordPress by MonsterInsights: by MonsterInsights – 7.18.0
PublishPress Capabilities: by PublishPress – 2.2
SiteGround Optimizer: by SiteGround – 5.9.6
SiteGround Security: by SiteGround – 1.1.2
Social Slider Widget: by creativemotion – 1.9.5
WooCommerce Better Usability: by Moises Heberle – 1.0.49

### Dropin Plugins (1) ###

maintenance.php: maintenance.php

### Settings ###

API Enabled: –
Force SSL: –
Currency: SGD ($)
Currency Position: left
Thousand Separator: ,
Decimal Separator: .
Number of Decimals: 2
Taxonomies: Product Types: external (external)
grouped (grouped)
simple (simple)
variable (variable)

Taxonomies: Product Visibility: exclude-from-catalog (exclude-from-catalog)
exclude-from-search (exclude-from-search)
featured (featured)
outofstock (outofstock)
rated-1 (rated-1)
rated-2 (rated-2)
rated-3 (rated-3)
rated-4 (rated-4)
rated-5 (rated-5)

Connected to WooCommerce.com: ?

### WC Pages ###

Shop base: #6 - /shop/
Cart: #7 - /cart/
Checkout: #8 - /checkout/
My account: #9 - /my-account/
Terms and conditions: ? Page not set

### Theme ###

Name: porto-child
Version: (update to version 0 is available)
Author URL: 
Child Theme: ?
Parent Theme Name: Porto
Parent Theme Version: 6.1.8
Parent Theme Author URL: https://www.portotheme.com/
WooCommerce Support: ?

### Templates ###

Overrides: porto/woocommerce/archive-product.php
porto/woocommerce/cart/cart-empty.php
porto/woocommerce/cart/cart-shipping.php
porto/woocommerce/cart/cart-totals.php
porto/woocommerce/cart/cart.php
porto/woocommerce/cart/cross-sells.php
porto/woocommerce/cart/mini-cart.php
porto/woocommerce/cart/proceed-to-checkout-button.php
porto/woocommerce/cart/shipping-calculator.php
porto/woocommerce/checkout/form-billing.php
porto/woocommerce/checkout/form-checkout.php
porto/woocommerce/checkout/form-coupon.php
porto/woocommerce/checkout/form-login.php
porto/woocommerce/checkout/form-pay.php
porto/woocommerce/checkout/form-shipping.php
porto/woocommerce/checkout/payment-method.php
porto/woocommerce/checkout/payment.php
porto/woocommerce/checkout/review-order.php
porto/woocommerce/checkout/thankyou.php
porto/woocommerce/content-product-cat.php
porto/woocommerce/content-product.php
porto/woocommerce/content-single-product.php
porto/woocommerce/content-widget-product.php
porto/woocommerce/global/form-login.php
porto/woocommerce/global/quantity-input.php
porto/woocommerce/global/wrapper-start.php
porto/woocommerce/loop/add-to-cart.php
porto/woocommerce/loop/loop-end.php
porto/woocommerce/loop/loop-start.php
porto/woocommerce/loop/no-products-found.php
porto/woocommerce/loop/orderby.php
porto/woocommerce/loop/pagination.php
porto/woocommerce/loop/rating.php
porto/woocommerce/loop/sale-flash.php
porto/woocommerce/myaccount/dashboard.php
porto/woocommerce/myaccount/downloads.php
porto/woocommerce/myaccount/form-add-payment-method.php
porto/woocommerce/myaccount/form-edit-account.php
porto/woocommerce/myaccount/form-edit-address.php
porto/woocommerce/myaccount/form-login.php
porto/woocommerce/myaccount/form-lost-password.php
porto/woocommerce/myaccount/form-reset-password.php
porto/woocommerce/myaccount/lost-password-confirmation.php
porto/woocommerce/myaccount/my-account.php
porto/woocommerce/myaccount/my-address.php
porto/woocommerce/myaccount/my-downloads.php
porto/woocommerce/myaccount/my-orders.php
porto/woocommerce/myaccount/navigation.php
porto/woocommerce/myaccount/orders.php
porto/woocommerce/myaccount/payment-methods.php
porto/woocommerce/myaccount/view-order.php
porto/woocommerce/order/form-tracking.php
porto/woocommerce/order/order-details-customer.php
porto/woocommerce/order/order-details.php
porto/woocommerce/order/order-downloads.php
porto/woocommerce/order/tracking.php
porto/woocommerce/single-product/add-to-cart/simple.php
porto/woocommerce/single-product/add-to-cart/variable.php
porto/woocommerce/single-product/meta.php
porto/woocommerce/single-product/product-attributes.php
porto/woocommerce/single-product/product-image.php
porto/woocommerce/single-product/product-thumbnails.php
porto/woocommerce/single-product/rating.php
porto/woocommerce/single-product/related.php
porto/woocommerce/single-product/review-meta.php
porto/woocommerce/single-product/review-rating.php
porto/woocommerce/single-product/review.php
porto/woocommerce/single-product/sale-flash.php
porto/woocommerce/single-product/short-description.php
porto/woocommerce/single-product/tabs/tabs.php
porto/woocommerce/single-product/title.php
porto/woocommerce/single-product/up-sells.php
porto/woocommerce/single-product-reviews.php

### Action Scheduler ###

Complete: 515
Oldest: 2021-09-04 09:25:24 +0000
Newest: 2021-09-18 15:28:00 +0000

Pending: 1
Oldest: 2021-09-19 12:36:15 +0000
Newest: 2021-09-19 12:36:15 +0000

### Status report information ###

Generated at: 2021-09-18 23:36:04 +08:00

Again, thank you very much for your help!! ??

Regards,
MZ

Hi @mzn001,

Could you also check if you get any specific fatal errors or error that start with wpo_wcpdf_ and that have a timestamp that corresponds with the time the email should have been sent?

You can check for errors in your logs via WooCommerce > Status > Logs.