1. Recurring Email Service:

   Set up a recurring email service like Mailchimp or ProtonMail. This allows you to schedule and send messages regularly, ensuring you receive a message from your sender each day. Review the sender's email to confirm they are still on your list upon leaving.

2. Group Chat on Messenger Platforms:

   Use a messaging app like WhatsApp or Facebook Messenger to create a group chat. This allows you to communicate with multiple people and manage messages together.

3. Video Calls:

   Use video conferencing tools like Zoom or Microsoft Teams to make short video calls. This method doesn't require text messages and is convenient for maintaining a connection.

4. Email and Messaging Services:

   Consider services like HeadsUp or EndlessChats, which offer email and messaging features. Set up a custom message group where you can send messages to multiple recipients, making communication easier.

5. Cloud-Based Services with Scheduling:

   Utilize services like Google Workspace or Google Calendar with features like the "Stay Connected" service, which allows recurring messages. This ensures you receive a message each day.

6. Manage Reminders Manually:

   If using a recurring service, set reminders during setup. Check the sender's email each day to confirm their account is active.

7. Contacting After Departure:

   Ensure there's a way to contact someone who ignores you after leaving. Consider sending a separate email or website notice to apologize and remind them to check their messages.

Conclusion: Start with a recurring email service for its simplicity and ease of use. Explore other options like group chats or video calls as you become comfortable. Consider the ease of use and features of each service to find the best fit for your needs.