DeepSeek V4 Pro vs Gemini 3.5 Flashfor writing emails

Subject: Update on your delivery timeline  

Dear [Customer Name],  

I’m writing to let you know that your order will arrive two weeks later than originally promised. We recently faced an unexpected failure in our supply chain, and as a result, we haven’t been able to meet the timeline we set together. This falls entirely on us, and I’m truly sorry.  

To make this right, I’ve applied a 15% discount to your order, which will be reflected in your final invoice. You don’t need to take any action—the adjustment is already in place.  

We’re worki…

Subject: Important update regarding your order #[Order Number]

Dear [Customer Name],

I am writing to inform you that your upcoming delivery will be delayed by two weeks. 

We recently experienced an unexpected disruption with one of our key material suppliers. While this was outside our direct control, we take full responsibility for the delay and for not meeting the delivery timeline we promised you. 

To make amends for this delay, we have issued a 15% refund on your order, which will credit back to your original payment method within 3-5 b…