While choosing any highchair for your child it's important to pay attention on such things as its simplicity in cleaning, level of comfort, nice design, safety and adjustability for your child's growing (and we all know how fast the children grow up!).
From our own experience I can recommend you to try such model as Boon Flair Highchair. It costs a bit more than $300 but it's really worth this price because it has a foot-activated length adjustment, safe five-point harness and a convenient, and pleasant design.
Try also to check such best high chair for small spaces https://pickadvisor.org/best-highchair-for-small-spaces/ ; as Graco Blossom 6-in-1 and JOOVY Nook High Chair.
Well your instruction will depend on the certain type of software which you'll choose. Usually there's a need of installing Outlook on your machine for this, you can also use special conversion programs like for example Kernel PST Converter, SysTools Mail Converter, Total Mail Converter and so on. However installing all this soft on your device isn't always convinient, besides some of these programs are rather expensive too. Keep in mind that some of them be weak in case of security for your files too.That's why it's recommended to use as an alternative online email conversion, the safest and free tools for this are for example Email Migration Service https://convertemail.online/ , PST to EML Converter and Softstella.