Since the default Magento 2 functionality is always a little bit limited, you can easily solve this problem with the aid of various third-party modules. For instance, Magento 2 emailing has a bunch of restrictions, but you can avoid them with modules, described below. In the following article, we collected Magento 2 email extensions that improve the way default emails are configured and delivered. You can find the appropriate marketing solutions here: Magento 2 Newsletter Extensions And Email Marketing Services. As for Magento 1 email modules, they are described in this post: The Best Magento Extensions For Custom And ImprovedEmails..
Fooman always does a brilliant job when it comes to Magento extensions, and modules for Magento 2 are not an exception. Therefore, we recommend you to install Fooman Email Attachments in order to improve the default functionality of your Magento 2 website. The Magento 2 email extension automatically attaches Invoice, Order, Shipping, or Credit Memo PDFs as well as Terms and Conditions to all your sales emails. The Magento 2 improved email module offers an absolutely free solution which will help you save a lot of time time.
It is also necessary to mention that Fooman Email Attachments offers a useful developer feature. If you write your own module or hire someone to do this you can easily hook into the email sending process run by this extension.
This Magento 2 email extension by Amasty offers a functionality that has been never available among default Magento features: SMTP Email Settings provides the ability to send reliable emails from a popular local hosting. Alternatively, you can rely on a custom Magento 2 SMTP server if you wish. Furthermore, you not only get a full control over Magento 2 SMTP settings, but get a perfect opportunity to test everything before sending any emails. Consequently, the Amasty SMTP Email Settings Magento 2 email extension offers the ability to check if your customers and partners receive all your messages.
Core features of Amasty SMTP Email Settings are:
Secure SMTP authentication and connection for Magento 2;
Pre-defined settings for various email service providers;
Reliable debugging for your your emails;
Email log;
Flexible sending settings for Magento 2 emails.
For further information about this Magento 2 improved email module, follow this link:
With this Magento 2 improved email extension, you can easily resize product images and add them to your sales emails. The advantage of Product Thumbnail in Sales Emails is simple: customers receive a confirmation mail with a product image. In case of default Magento 2, the sales order email does not include the image of ordered items with the mail.
Also note that you can get improved Magento 2 email functionality with the help of the following modules:
Custom Carrier Trackers by Xtento– add new tracking carriers with custom tracking URLs, make tracking links in emails clickable, disable default tracking methods, etc;