Usually the clients are getting an invoice 20 days before the due date, to give them time to mail in a check.
When you have a big customer that is using the support tickets on a daily basis, he doesn't want to get another extra "feedback email" on each ticket that is getting closed.
and control the "Support Ticket Feedback Request" by Customer / Customer Contacts level.
How to install the addon:
For support commands or ideas:
Be the first to review Advanced Mail Limiter.
The best place to start if you need help with a specific product is to contact the developer. All WHMCS Marketplace developers have both a website and support URL listed.
MSG91 WHMCS SMS plugin gives you the power and flexibility to stay connected with your customers by sending them an SMS and OTP's for 2FA at the crucial steps that matters the most.
Transactional email support for Sendgrid, Mailgun, Postmark, Sendinblue, Mailjet, Sparkpost, Mandrill and AmazonSES
More Advanced SMS System (Two-Factor Authentication)
Professional business e-mail for your users
Verification Your Email