The Proposal Sending Limit: Explained
We allow the creation of unlimited proposals which means you can prepare as many proposals as you like.
If you send one of those proposals, that counts as sending one proposal. If you re-send that same proposal to a different person, an additional person, yourself etc then that doesn't count towards your allowance.
All proposal allowances reset on the 1st of each month. We don't pro-rata allowances so if you start paying on the 20th of the month, you have the rest of the month to use the entire month's allowance.
Your billing date and proposal date aren't related.