### [How to Fix Sugar Calendar Not Sending Emails](https://wpmailsmtp.com/how-to-fix-sugar-calendar-not-sending-emails/)

**Published:** September 11, 2026
**Author:** David Ozokoye

**Excerpt:** Did a ticket buyer pay for your event and never receive their ticket?

Sugar Calendar hands its emails to WordPress, which hands them to your host, and most hosts send that mail unauthenticated.

This post covers how to check Sugar Calendar's own sender settings and connect an authenticated mailer with the WP Mail SMTP Setup Wizard. 

**Content:**

A customer completes checkout, but their Sugar Calendar ticket never appears. Did Sugar Calendar fail to create the email, or did it disappear after WordPress tried to send it?

One detail can narrow it down. If only one notification is missing, check its template or toggle. If several kinds of WordPress email are failing, investigate how your site sends mail.

We checked the current Sugar Calendar Events and Bookings email screens to trace both paths. I’ll show you how to verify them, connect WP Mail SMTP to an authenticated mailer, and run a test.

You’ll also learn how to resend a missing receipt, ticket, or booking notification.

- [Why Isn't Sugar Calendar Sending Emails?](#aioseo-why-isnt-sugar-calendar-sending-emails)
- [Which Emails Does Sugar Calendar Send?](#aioseo-which-emails-does-sugar-calendar-send)
- [How to Fix Sugar Calendar Not Sending Emails](#aioseo-how-to-fix-sugar-calendar-not-sending-emails)
- [Frequently Asked Questions](#aioseo-frequently-asked-questions)

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## Why Isn’t Sugar Calendar Sending Emails?

[Sugar Calendar](https://sugarcalendar.com) generates notifications through WordPress. By default, WordPress uses `wp_mail()` and PHPMailer to pass them to the server’s mail system. A successful handoff does not prove that a message reached the inbox.

Some web hosts restrict outgoing mail. Messages may also lack the authentication inbox providers use to verify senders. An email can therefore fail, be rejected later, or land in spam.

First, rule out a notification-specific problem. Sugar Calendar has separate settings for Events and Bookings. An incorrect sender, disabled booking notification, or template issue may affect only part of your workflow.

Check the affected Sugar Calendar notification first, then configure a reliable mailer.

**Note:** If you’d like more background first, see our guide to [what SMTP is and how it works](https://wpmailsmtp.com/what-is-smtp-how-it-works/).

## Which Emails Does Sugar Calendar Send?

Sugar Calendar divides notifications between Events and Bookings. Identify the failing group so you start on the correct settings screen.

**Event and ticket emails** appear under **Events** » **Settings** » **Emails**. The current screen contains these 6 templates:

EmailWhen Sugar Calendar sends itOrder Receipt Email To AttendeeAfter a customer completes a ticket purchaseTicket Receipt Email To PurchaserWhen an individual ticket is emailed to its attendeeRSVP “Going” Email To AttendeeAfter an attendee responds “Going”RSVP “Not Going” Email To AttendeeAfter an attendee responds “Not Going”Incomplete Registration ReminderAbout an hour after an attendee leaves an after-checkout registration form incompleteRegistration ConfirmationEach time an attendee completes or edits an after-checkout registration formThe first 4 are standard event templates. The 2 registration emails apply to post-checkout registration forms. Sugar Calendar currently labels the order message “To Attendee” and the ticket message “To Purchaser,” although the order receipt goes to the customer and each ticket receipt contains an attendee’s ticket details.

**Booking emails** appear under **Bookings** » **Settings** » **Emails**. They cover pending, confirmed, rescheduled, and canceled appointments, along with reminders, refunds, and an integration credit warning. Most appointment notifications have attendee and employee versions.

**Important:** Each booking email has its own toggle. If the affected notification is switched off, Sugar Calendar will not generate it. Check the toggle before troubleshooting delivery.

If one notification is missing, inspect its template and toggle. If several are failing, continue with the mailer checks below.

## How to Fix Sugar Calendar Not Sending Emails

- [Step 1: Check Your Sugar Calendar Email Settings](#aioseo-step-1-check-your-sugar-calendar-email-settings)
- [Step 2: Install the WP Mail SMTP Plugin](#aioseo-step-2-install-the-wp-mail-smtp-plugin)
- [Step 3: Connect a Mailer With the Setup Wizard](#aioseo-step-3-connect-a-mailer-with-the-setup-wizard)
- [Step 4: Send a Test Email](#aioseo-step-4-send-a-test-email)
- [Step 5: Force All Emails From One Address (Optional)](#aioseo-step-5-force-all-emails-from-one-address-optional)
- [Step 6: Turn On Email Logging (Optional)](#aioseo-step-6-turn-on-email-logging-optional)

### Step 1: Check Your Sugar Calendar Email Settings

Go to **Events** » **Settings**, then open the **Emails** tab.

![Sugar Calendar Emails settings tab showing the From Email Address and From Email Name fields](https://wpmailsmtp.com/wp-content/uploads/2026/09/img_01_sc-emails-tab.png)Check these 2 fields:

- **From Email Address:** The address used to send event notifications.
- **From Email Name:** The sender name recipients see.

**Warning:** Use a From Email that your chosen mailer permits. For most transactional mailers, this should be an address on a domain you own and have authenticated, such as `events@example.com`. If you use the Google or Microsoft mailer, use an address authorized for that account.

Next, review the **Configure Emails** list. Click the pencil icon beside the missing notification to check its subject and message.

![The six configurable event and ticket email templates in Sugar Calendar](https://wpmailsmtp.com/wp-content/uploads/2026/09/img_02_sc-email-templates.png)Dynamic placeholders vary by template. Ticket receipts, for example, support `{ticket_id}`, `{ticket_code}`, and `{ticket_url}`. Use the placeholders shown in the template editor, then click **Save Settings**.

For appointment emails, go to **Bookings** » **Settings** » **Emails**. This area has separate sender fields and notification templates.

![Bookings Emails settings tab showing per-email on and off toggles](https://wpmailsmtp.com/wp-content/uploads/2026/09/img_03_sc-bookings-emails-tab.png)Confirm that the toggle beside the missing booking email is on. Save your changes, then create a test purchase, RSVP, or booking that matches the notification’s trigger. If the email still does not arrive, continue to Step 2.

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### Step 2: Install the WP Mail SMTP Plugin

[WP Mail SMTP](https://wpmailsmtp.com/pricing/) configures WordPress to send email through a dedicated mailer instead of relying on the web server’s default mail setup. This applies to Sugar Calendar notifications and other emails your site generates.

**Pro Tip:** In Sugar Calendar, click **Email issues?** in the Events admin menu. This shortcut takes you to the WP Mail SMTP installation or setup flow.

You can also install and activate WP Mail SMTP from **Plugins** » **Add New Plugin**. For the paid version, upload the ZIP file from your WP Mail SMTP account.

To download the Pro version, head to your [WP Mail SMTP account](https://wpmailsmtp.com/account/). After that, click on the **Downloads** tab and download the latest version to your desktop.

![Download the WP Mail SMTP plugin](https://wpmailsmtp.com/wp-content/uploads/2025/11/download-wp-mail-smtp.png)Next, open up your WordPress dashboard and upload the zip file to install the plugin.

If you need help with this part, jump over to this [guide to installing a WordPress plugin](https://www.wpbeginner.com/beginners-guide/step-by-step-guide-to-install-a-wordpress-plugin-for-beginners/).

![Upload the WP Mail SMTP plugin to the plugins page](https://wpmailsmtp.com/wp-content/uploads/2021/05/install-wp-mail-smtp.png "install-wp-mail-smtp - WP Mail SMTP - WP Mail SMTP - WP Mail SMTP")Once the plugin has been uploaded, hit **Activate**. This will start the WP Mail SMTP Setup Wizard in your browser.

The free version can connect your site to a mailer and send a test email. Detailed email logs and reports require WP Mail SMTP Pro.

### Step 3: Connect a Mailer With the Setup Wizard

Go to **WP Mail SMTP** » **Settings**. Under Primary Connection, click **Launch Setup Wizard**.

![The Launch Setup Wizard button in WP Mail SMTP settings](https://wpmailsmtp.com/wp-content/uploads/2022/12/launch-setup-wizard-1024x527.png)**Note:** If your Primary Connection already works, you do not need to run the wizard again. Skip to Step 4 and test it.

Click **Let’s Get Started**, then choose a mailer.

![The Let's Get Started button in the WP Mail SMTP Setup Wizard](https://wpmailsmtp.com/wp-content/uploads/2022/10/click-lets-get-started-button-1024x817.png)Choose a provider that can handle your ticket and booking volume. [SendLayer](https://wpmailsmtp.com/docs/how-to-set-up-the-sendlayer-mailer-in-wp-mail-smtp/), [SMTP.com](https://wpmailsmtp.com/smtp-com-review/), and [Brevo](https://wpmailsmtp.com/docs/how-to-set-up-the-sendinblue-mailer-in-wp-mail-smtp/) are transactional email services. Google Workspace or Gmail may suit a smaller site. The Other SMTP mailer accepts existing SMTP credentials.

![Choosing a mailer in the WP Mail SMTP Setup Wizard](https://wpmailsmtp.com/wp-content/uploads/2026/04/choose-mailer-setup-wizard-1024x859.png)Not sure which mailer to use for your WordPress site? The table below reviews the available options that WP Mail SMTP supports.

Mailers available in all versionsMailers in [WP Mail SMTP Pro](https://wpmailsmtp.com/pricing/)[SendLayer](https://wpmailsmtp.com/docs/how-to-set-up-the-sendlayer-mailer-in-wp-mail-smtp/)[Amazon SES](https://wpmailsmtp.com/docs/how-to-set-up-the-amazon-ses-mailer-in-wp-mail-smtp/)[SMTP.com](https://wpmailsmtp.com/docs/how-to-set-up-the-smtp-com-mailer-in-wp-mail-smtp/)[Microsoft 365 / Outlook.com](https://wpmailsmtp.com/docs/how-to-set-up-the-outlook-mailer-in-wp-mail-smtp/)[Brevo](https://wpmailsmtp.com/docs/how-to-set-up-the-sendinblue-mailer-in-wp-mail-smtp/)[Zoho Mail](https://wpmailsmtp.com/docs/how-to-set-up-the-zoho-mailer-in-wp-mail-smtp/)[Google Workspace / Gmail](https://wpmailsmtp.com/docs/how-to-set-up-the-gmail-mailer-in-wp-mail-smtp/)[Mailjet](https://wpmailsmtp.com/docs/how-to-set-up-the-mailjet-mailer-in-wp-mail-smtp/ "Mailjet")[Mailgun](https://wpmailsmtp.com/docs/how-to-set-up-the-mailgun-mailer-in-wp-mail-smtp/)[Postmark](https://wpmailsmtp.com/docs/how-to-set-up-the-postmark-mailer-in-wp-mail-smtp/)[SendGrid](https://wpmailsmtp.com/docs/how-to-set-up-the-sendgrid-mailer-in-wp-mail-smtp/)[SMTP2GO](https://wpmailsmtp.com/docs/how-to-set-up-the-smtp2go-mailer-in-wp-mail-smtp/ "SMTP2GO")[SparkPost](https://wpmailsmtp.com/docs/how-to-set-up-the-sparkpost-mailer-in-wp-mail-smtp/)[Elastic Email](https://wpmailsmtp.com/docs/how-to-set-up-the-elastic-email-mailer-in-wp-mail-smtp/)[Other SMTP](https://wpmailsmtp.com/docs/how-to-set-up-the-other-smtp-mailer-in-wp-mail-smtp/)Click **Save and Continue**, then enter the settings for your provider. Required fields vary by mailer, and the wizard links to the relevant setup guide.

![The Configure Mailer Settings step in the WP Mail SMTP Setup Wizard](https://wpmailsmtp.com/wp-content/uploads/2026/04/read-the-setup-manual-1024x806.png)**Pro Tip:** Set the From Email to an address your mailer has authorized. Using the same address in Sugar Calendar keeps the sender consistent across your site.

### Step 4: Send a Test Email

The Setup Wizard runs a connection check at the end. When the setup passes, you’ll see the message “Congrats, you’ve successfully set up WP Mail SMTP!”

![The WP Mail SMTP Setup Wizard success screen](https://wpmailsmtp.com/wp-content/uploads/2021/02/finish-setup-1024x944.png)If the check fails, click **Start Troubleshooting** and review the error details.

![The WP Mail SMTP Setup Wizard troubleshooting screen](https://wpmailsmtp.com/wp-content/uploads/2021/02/wp-mail-smtp-setup-wizard-troubleshooting-1024x842.png)You can send another test at any time from **WP Mail SMTP** » **Tools** » **Email Test**.

![The Email Test tab in WP Mail SMTP Tools](https://wpmailsmtp.com/wp-content/uploads/2024/10/test-email-tab.png)A successful test confirms that WordPress can hand a message to the configured mailer. Check the recipient’s inbox and spam folder as well. If the test fails, our guide to [fixing WP Mail SMTP test email errors](https://wpmailsmtp.com/how-to-fix-wp-mail-smtp-not-sending-test-email/) explains the common causes.

### Step 5: Force All Emails From One Address (Optional)

WordPress plugins can set their own sender addresses. Turn on **Force From Email** in WP Mail SMTP if you want all compatible plugins to use the address configured in your Primary Connection.

![The Force From Email setting in WP Mail SMTP](https://wpmailsmtp.com/wp-content/uploads/2022/09/force-from-email-1024x551.png)**Important:** Force From Email overrides the From Email Address set in Sugar Calendar. Make sure the forced address is authorized by your mailer before enabling it.

### Step 6: Turn On Email Logging (Optional)

Email logs show whether WordPress generated a message and whether the configured mailer accepted the send request. This helps you separate a Sugar Calendar trigger problem from a sending error.

Enable **Detailed Email Logs** in the Setup Wizard or later in the WP Mail SMTP Email Log settings.

![Selecting email features in the WP Mail SMTP Setup Wizard](https://wpmailsmtp.com/wp-content/uploads/2023/08/select-email-features-1024x912.png)With logging enabled, WP Mail SMTP records details such as the recipient, subject, source, mailer, and send status. You can also enable reports, a weekly summary, and alerts for failed sends.

![Configuring email log options in the Setup Wizard](https://wpmailsmtp.com/wp-content/uploads/2022/10/configure-email-logs-1-865x1024.png)**Note:** Detailed Email Logs require a paid [WP Mail SMTP license](https://wpmailsmtp.com/pricing/). To resend from a log, you must also enable the option to store email content.

You may not need a log to resend the original notification. For an event order, open the order and click **Resend Email Receipt**.

You can also resend an individual ticket from the Tickets section. For a booking, open the appointment and use the Actions section to resend its confirmation, reminder, or update notification.

## Frequently Asked Questions

### Why is Sugar Calendar not sending ticket emails?

Check the order or ticket details first to confirm that Sugar Calendar created the purchase and has the correct recipient address. Then verify the sender under **Events** » **Settings** » **Emails**. If other site emails also fail, connect an authenticated mailer with WP Mail SMTP and send a test email.

### Does Sugar Calendar need an SMTP plugin?

Sugar Calendar can generate emails without an SMTP plugin. However, its [event email documentation](https://sugarcalendar.com/docs/events/a-complete-guide-to-sugar-calendar-event-emails/) recommends using one to improve deliverability. WP Mail SMTP connects WordPress to a dedicated mailer and adds tools for testing the connection.

### Where do I change the Sugar Calendar sender email address?

Go to **Events** » **Settings** » **Emails** for event and ticket notifications. Go to **Bookings** » **Settings** » **Emails** for appointment notifications. If WP Mail SMTP’s Force From Email setting is enabled, its address overrides the sender set in Sugar Calendar.

### Can I resend a Sugar Calendar ticket or booking email?

Yes. From an event order, you can resend the order receipt or an individual ticket. From a booking’s appointment details, you can resend the confirmation, reminder, or update notification. WP Mail SMTP Pro can also resend a logged email when email content storage is enabled.

### Why are Sugar Calendar emails going to spam?

Inbox providers consider sender authentication, reputation, message content, and recipient engagement. Start by authenticating the sending domain as required by your mailer. Our guide to [SPF, DKIM, and DMARC](https://wpmailsmtp.com/dmarc-spf-dkim/) explains what these DNS records do.

## Next, Write Better Order Confirmation Emails

Once your ticket receipts are reaching the inbox, review what they say. Our roundup of [order confirmation email examples](https://wpmailsmtp.com/order-confirmation-email-examples/) shows the details that make a confirmation clear and useful. You can apply the same ideas when customizing Sugar Calendar’s receipt templates.

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Ready to fix your emails? [Get started today](https://wpmailsmtp.com/pricing) with the best WordPress SMTP plugin. If you don’t have the time to fix your emails, you can get full White Glove Setup assistance as an extra purchase, and there’s a 14-day money-back guarantee for all paid plans.

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**Categories:** WordPress Tutorials

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