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How B2B tools turn single users into paying teams, including WeTransfer spotting colleagues on the free plan, Slack's request-an-upgrade flow and Sentry's trialled-feature badges.
WeTransfer spots colleagues
Slack routes upgrade requests
Sentry badges trialled plans
Slack has an upsell funnel where they'll promote a feature to a basic channel member, and allow them to request an upgrade from a user with billing permissions.

More context
One way to improve this would be to show who in your channel is going to get the email, and what the email will say.
People may be reserved about triggering an email to their boss.
It's a very specific version of Social Proof (e.g., "David from accounts really wants this feature").
If you've got items in your basket, and click "buy now" on an item (skipping the basket), it'll ask you if you want to take those items to the checkout with you.

After signing up to the project management tool Breeze, you’ll get an email that you can forward to your team for them to join.

More context
This is a great way of lowering the friction of inviting your team, without having to build loads of functionality.
How B2B tools turn single users into paying teams, including WeTransfer spotting colleagues on the free plan, Slack's request-an-upgrade flow and Sentry's trialled-feature badges.
WeTransfer spots colleagues
Slack routes upgrade requests
Sentry badges trialled plans
Slack has an upsell funnel where they'll promote a feature to a basic channel member, and allow them to request an upgrade from a user with billing permissions.

More context
One way to improve this would be to show who in your channel is going to get the email, and what the email will say.
People may be reserved about triggering an email to their boss.
It's a very specific version of Social Proof (e.g., "David from accounts really wants this feature").
If you've got items in your basket, and click "buy now" on an item (skipping the basket), it'll ask you if you want to take those items to the checkout with you.

After signing up to the project management tool Breeze, you’ll get an email that you can forward to your team for them to join.

More context
This is a great way of lowering the friction of inviting your team, without having to build loads of functionality.