Overview
Twilio charges a small amount for each email that you send exceeding your current plan’s limit. Any overage charges appear on the invoice for the month following any overage occurred.
To exclude contacts from the next month's billing, you must delete or process them before midnight UTC of that month. Upgrading your account doesn’t negate incurred overage charges.
What You Need To Know
Accounts created through third parties
If you created your SendGrid account through Heroku or Google Cloud, your subscription does not allow for overages. For pricing, billing, and account package details for these types of SendGrid accounts, refer to the partner account's billing information.
Marketing Campaigns overage costs
If you exceed your plan allotment of emails sent or contacts stored, the exact amount you pay varies month-to-month. The Free Trial version plan covers storage of 100 contacts and sending 100 emails each day for 60 days. You can’t exceed these limitations. Find overage costs incurred for paid plans, excluding any national or local taxes, in the Twilio SendGrid Marketing Campaigns pricing FAQ, What happens if I go over my email plan?
API overage costs
If you exceed your plan allotment of emails sent or contacts stored, the exact amount you pay varies month-to-month. The Free Trial version plan covers storage of 100 contacts and sending 100 emails each day for 60 days. You can’t exceed these limitations. Find overage costs incurred for paid plans, excluding any national or local taxes, in Twilio SendGrid Email API pricing FAQ, What happens if I go over my email plan?