Email account for small person

[MsWac127]

Hi all

In the current lockdown situation my 4yo is really missing her older half-sister. They've video chatted on WhatsApp (older one not keen on this) and 4yo is too young to meaningfully text. We've had a chat and they'd like to email each other (also developing literacy for home schooling) but I'd appreciate some advice, if anyone has any, on which provider of kids email accounts is suitable/reliable/good quality, etc.
Loads of thanks in advance to anyone who can help :)

I do not know what such a facility available on other mailings system but gmail has an option to link a parental account. They nicely handled everything. They even design an app for managing the family link you should check it out.