Add ability to manage email templates

[dselman]

Feature Description

Ability to configure templates used for sent emails.

Describe the solution you'd like

Control of colors, text, fonts, logos etc to conform to brand style, including the ability to merge in data from the user profile.

Describe alternatives you've considered

One approach would be to support Sendgrid Dynamic Transactional Templates, allowing the admin to configure the IDs of a Sendgrid templates to use for the emails sent and then passing the Authenticator user data to Sendgrid — allowing the admin to use the graphical Sendgrid template designer to define their templates and to build dynamic content based on the data passed from Authenticator.

https://docs.sendgrid.com/ui/sending-email/how-to-send-an-email-with-dynamic-transactional-templates

Additional context

[lakhansamani]

Thanks @dselman for reporting this. Will add to the roadmap and take up next once done with #90

[hmmhmmhm]

I hope this function will be supported simply by replacing HTML.

[lakhansamani]

@hmmhmmhm yes this will be html template that one will be able to create using wyswig editor