Hi @zoecccp and welcome back to the Community!

As of July, spellcheck is no longer a feature that’s included in the new editor. However, I will certainly share this product feature request with our Product Team for further consideration!

As a workaround, I would suggest looking into a third-party spelling and grammar browser extension such as Grammarly or ProWritingAid. Most of these extensions offer free and paid subscriptions based on the level of writing assistance you are looking for. 

Also, here’s a Help Center Article detailing some key differences between the old and new editors, in case you come across any other discrepancies that you’re curious about:

https://help.klaviyo.com/hc/en-us/articles/4420421357979-Klaviyo-s-New-Template-Editor-vs-Classic-Template-Editor

Hope this helped to clarify and thank you for using the Community!

-Brian

Thank you @Brian Turcotte  Noted, and thanks for the article link. Very useful.

@zoecccp Glad I could help! Thanks again for using the Community