Choosing providers for collaboration tools (email, support, etc)

Workspace Provider

For sending non-automated emails, you have a few options. The "traditional" providers - Microsoft and Google - are actually fairly expensive, and unless you plan to make use of all the features they offer, that can be an unnecessary expense if you're starting out.

Consider cheaper alternatives; the email service market is a very competitive one, and plenty of companies offer decent email services for far less money than the big players. Google Workspace is well known, but options like Zoho Workspace and others provide almost all the same functionality for half the price or less.

Support Provider

The prices offered by support providers, and the pricing structure, vary quite a bit. You probably want to choose one to fit what you expect your support team to look like in the future; e.g. if you intend to only have a few people, then some options that have fixed prices up to X number of people can be bad value.

Crisp, Zendesk and Zoho Desk Express are some examples of providers here (Crisp is rather expensive unless you intend to make full use of the number of people it lets you use on a given plan).

Credentials Manager

This is not referring to internal system credentials, but user credentials - for example, managing support staff logins and the like. If you are managing any kind of team, this is a necessary security measure, to minimise the chance of a staff member's credentials being compromised and misused.

BitWarden and 1Password are both good options here. KeePassXC is a good open-source free alternative for individuals - I would not recommend KeePassXC for teams, because it is not a managed cloud solution - you have to manage keeping the password database secure yourself, which is not a good idea for a team. For an individual, this is okay provided you know what you're doing, but sooner or later it is going to have to be replaced by a cloud solution.