Additionally, the text sizes in the current emails that are auto-generated as different sizes. This makes the thank you look very unprofessional and unpolished. This needs to be addressed ASAP by GiveLively as it isn't something I can change on my end as admin.

I agree. I also would like to be able to add our logo as well as other images (i.e. signature) and branding colors with hex #'s. I hope this is something that GiveLively does soon. It would really improve the look of the important Thank You messages we send our consitituents.

Just the simple add an image option would be great. In Donorbox, it is easy to add your organization's logo to the header, which looks real clean and professional.

Additionally, with the additional questions, it would be great if we could have merge tags for the answers given. I.e. if a custom question is set up with Phone Number or Company Name, to be able to merge those into the Thank You Message.

I would love to be able to embed videos, or at least include thumbnails for them, to our thank you emails. I know we can have a link, but I want something more eye-catching.

Agreed