Use the QWeb templating mechanism for emails
Know and track (un)subscription reasons, GDPR compliant
Add contacts to event
Adds a new option 'One Choice Per Column' to matrix types.
Avoids duplicate mailing lists and contacts
Disable mass mailing to partners by default (opt-out)
Restrict event track location overlapping
Events PDF Report With Full Details
Configure the default value of Opt-Out for new partners
Survey Percent Question Type
Mass mailing with other outgoing server
App will help to make multiple survey for customer
Send SMS to customers. Send SMS notifications on Customer mobile with the module. Integrate SMS gateways with Odoo.
Rayen Email Template
Odoo Clicksend SMS Gateway module allows Odoo admin to send SMS using ClickSend SMS. The user can send easy text message to clients.