If you have set the email sending limit while creating your email account, you can easily modify it. However, you cannot increase it higher than the limit set by your server administrator.
Log in to your DirectAdmin Account.
In the E-mail Manager
section, click on the E-mail Accounts
Icon or type E-mail Accounts
in the navigation filter
box, and then the option will appear. Click on it.
, you can see your email address along with the Plus icon
on the right-hand side.
Click on the Plus icon
and then on the Change Limits
In the Send Limit
field, enter your limit, for example, 200 or as much as you require. If you have the unlimited option available, choose Unlimited instead.6.
Click on the Save
Your email limit will be modified.