Google Calendar automation for webinar hosts

Invite them from your calendar. Register them automatically.

Connect your webinar platform and your Google accounts. Hermes sends the calendar invitations, and everyone who answers Yes or Maybe is registered into your webinar platform automatically — so the event holds a slot in their day and your platform takes over the reminders.

Invitation-only while we onboard new teams. No credit card to request access.

An email asks for attention. A calendar invite takes the slot.

Promoting a webinar by email means competing with everything else that landed that morning. And even the people who do register still have to be chased into the webinar platform, then reminded, then reminded again.

Promotional email gets filtered out

A well-written campaign still competes with a full inbox, and most of it is never opened.

Interest never becomes a registration

Someone wants to attend, but the sign-up form is one more step and the moment passes.

Registering people by hand does not scale

Copying every reply into your webinar platform is exactly the kind of work that gets skipped when the list grows.

Nobody knows who is actually coming

Responses sit in one place, registrations in another, and the real picture only appears on the day.

A calendar invite does two things an email cannot: it reserves the time, and it gives you a Yes or a Maybe you can act on.

How Hermes works

Connect two things once. The loop then runs on its own for every campaign.

Connect your webinar platform and your Google accounts

Authorize WebinarGeek or Zoom alongside the Google Workspace accounts and sending domains you already use. Hermes sends as you, from domains you control, and never sees your password.

Hermes invites your prospects from those accounts

Load the list for this campaign and Hermes sends each person a real Google Calendar invitation to the webinar, spread across your connected accounts and paced within each one's sending limits.

Every Yes and Maybe is registered automatically

The moment someone accepts or tentatively accepts, Hermes registers them in your webinar platform — no form for them to fill in, and no list for you to copy across. From there your platform's own reminder sequence takes over.

The event holds its place in their calendar

Because they accepted a calendar invitation rather than filling in a form, the webinar occupies a slot in their day — and you can see exactly who said Yes, No, or Maybe as the responses land in the dashboard.

What you get

Everything needed to turn a prospect list into a full webinar room.

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Calendar invitations at scale

Real Google Calendar invitations to every prospect on the list, sent from your accounts rather than a form they have to find and fill in.

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Automatic webinar registration

Accepting the invitation is the registration. Every Yes and Maybe is enrolled in WebinarGeek or Zoom automatically, so your platform's reminder sequence reaches them.

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The seat is already taken

A native calendar event syncs to every device and stays visible right up to the day, instead of relying on an email being remembered.

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Yes / No / Maybe tracking

Responses sync straight back, alongside registration and attendance signals from your webinar platform, so you know the size of the room before it happens.

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Multi-account sending

Invitations spread across every connected account, with per-account limits enforced automatically so no single domain gets pushed too hard.

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Your own sending domains

Invitations come from your brand, not ours, so the sender is one your audience already recognizes.

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Campaign dashboard

Delivery, responses, and performance for every campaign in one view — no spreadsheet to keep up to date.

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Executive and Assistant roles

Assistants run the day-to-day while executives keep control of connected accounts and settings.

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Encrypted and GDPR-ready

Encrypted connections, role-based access control, and an EU-based provider. See our Privacy Policy for how data is handled.

Pricing

Pay only for the accounts you need, and scale as you grow. Every plan includes the full product — the tiers differ in capacity, not features.

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All plans include

Google Calendar automation Cold invitation campaigns Multi-account management Customizable copy & templates

Prices in USD, excluding VAT where applicable. Accounts are provisioned by our team — request access and we will get you set up.

Request early access

Hermes is invitation-only while we onboard new teams. Tell us who you are and we will be in touch to get your accounts connected.

Frequently asked

How the invitations, the registrations, and the connected accounts actually work.

What does Hermes do?

It invites your prospects to your webinar as real Google Calendar invitations, sent from your own connected Google accounts. Whenever someone answers Yes or Maybe, Hermes registers them in your webinar platform automatically. They end up both registered and holding the slot in their calendar, without filling in a form or you copying anything across.

Who sends the webinar reminders?

Your webinar platform does. Because Hermes registers every Yes and Maybe into WebinarGeek or Zoom, those attendees enter your platform's normal reminder sequence exactly as if they had signed up through your registration page. Hermes handles the invitation and the registration, not the reminder emails.

Do invitations come from my domain or yours?

Yours. You connect your own Google Workspace accounts and sending domains, and Hermes sends as you — your prospects see a sender they already recognize.

Which webinar platforms do you support?

WebinarGeek and Zoom. Registration and attendance signals from both flow back into the dashboard alongside the calendar responses.

What happens to people who answer No, or don't respond?

Nothing is registered on their behalf. Only Yes and Maybe responses are enrolled in the webinar, and every response is visible in the dashboard so you can see how the room is filling up.

What access to my Google account does Hermes need?

Only what the calendar features require: creating and sending calendar invitations, managing the invitation queue, and reading invitation response status. Our use of data received from Google APIs follows the Google API Services User Data Policy, including the Limited Use requirements. You can revoke access at any time from your Google Account permissions page.

Will this hurt my domain reputation?

Sending limits are enforced per connected account and cannot be bypassed, precisely because deliverability is the asset. If a campaign would push a domain too hard, Hermes paces it instead. Connecting more accounts is what raises capacity — which is what the plans are priced on.

Am I responsible for who gets invited?

Yes. You choose the recipients and you need a lawful basis to contact them; Hermes is the sending tool, not the list. Our Terms set this out in full.

How long does setup take?

Connecting your webinar platform, your Google accounts, and your sending domains is a short one-time step, and our team walks you through it during onboarding. After that the loop runs per campaign.

Can I sign up right now?

Not yet — accounts are created by invitation while we onboard new teams. Request access above and we will reach out to get your accounts connected.

Who is behind Hermes?

quantumSCALE Institute OÜ, a B2B growth systems firm registered in Estonia. Hermes is the calendar automation product we built to run our own client webinars.

Stop promoting into an inbox.

Put the webinar in the calendar, and let the acceptances register themselves.

Request early access