How do I tell WhatsApp customers about a rain delay?

Tell waiting customers early. Give a new time you can keep, and let them cancel without any fuss. A short honest message beats a late apology.

• Send one clear message: the weather is slowing delivery, your food will reach you in about X minutes.
• Add a little to the time you think it will take. A late food order after a promise hurts more than a long wait.
• Offer to cancel or change to pickup if they do not want to wait.
• Tell your riders to take care and set a rule on when you pause deliveries for safety.
• If the delay is large, keep sending updates every so often instead of going quiet.