What's really going on

You've got 4-10 people touching client email, 10-50 inquiries a month, and overseas teammates who need to see the same thread you see. Right now the record of who said what lives in someone's inbox — probably yours. The "mass follow-up" need is a separate job: that's email marketing, not CRM. Mixing the two is why people end up paying for a Sales Hub seat they don't use.

What to do instead

1. HubSpot Free CRM (free) — shared inbox + contact timeline so your NY team and overseas team see every client email in one place, without paying per seat.
2. A dedicated bulk-email tool (check current pricing — Mailchimp, Brevo, or Instantly depending on whether these are marketing blasts or 1:1-style follow-ups) — this is what actually sends the "quick follow up to a mass amount of clients." A CRM will throttle you or charge you heavily for it.
3. Today, in 30 minutes: connect your company Gmail/Outlook to HubSpot Free, turn on the shared inbox, and forward the last week of client threads into it so the overseas team can see them by tomorrow morning.

What you're being oversold

Someone will push you toward HubSpot Sales Hub or a full Salesforce seat "so you can email everyone from the CRM." At 10-50 inquiries a month with 4-10 people, that's hundreds of dollars a month for features you won't touch. Folk is tempting for the clean UI but it's built for relationship pipelines, not transactional logistics inbound. The cost of doing nothing is quieter: clients slip because two people reply to the same thread, or nobody does, and overseas handoffs drop the ball at 3am your time.

When to revisit this

When one shared inbox stops being enough — usually when you're quoting differently to the same client twice in a month.

The part worth getting right

The fork is what "mass follow-up" actually means for you. If it's true marketing blasts — rate updates, capacity notices, holiday schedules to your whole book — you want a marketing tool wired into HubSpot, and the CRM stays free forever. If it's really 1-to-1 nudges to 40 clients who went quiet ("still need that shipment?"), you want a light sales-sequence tool, and the shape of your setup is different. Pick wrong and you either pay for a Sales Hub seat you didn't need, or you blast a marketing list and land in spam. Which one is it?