R 
Resend
Transactional email for developers, with React email templates.
NOT REALLY
why this verdict
Keep paying — OpenAI has not replaced it
OpenAI's version overlaps, but does not finish the email job, so this one still earns its $20/mo.
- A named launch, not a vibe named, unlinked
- AI codegen writes the send call but not the sending infrastructure. OpenAI, March 1, 2025 — no announcement link recorded yet.
- How much of the job it covers not the job editorial call
- Parts of it. The job still needs the tool to get finished.
- Is there a free way to do it? yes
- 1 of 3 listed replacements have a usable free tier: Plunk.
- What the call is worth $240/yr
- $20/mo at the entry paid tier — $240 a year per seat.
Reason composed from the fields above missing: announcement linked recorded: free replacement listed recorded: two or more escape hatches
- Threatened by
- OpenAI
- Since
- March 1, 2025
- List price
- $20/mo
- Per year
- $240
The backstory
Resend became the default of the AI-app boom precisely because AI writes the code around it: when Cursor scaffolds a signup flow it reaches for a provider with a clean SDK, and this is the one. Reputation, IP warmup and deliverability are physical-world problems no model solves.
Escape hatches
P 
Postmark Older, famously reliable.
postmarkapp.com open_in_new L 
Loops Adds marketing campaigns.
loops.so open_in_new P 
Plunk Self-hostable.
useplunk.com open_in_new1 of 3 replacements have a usable free tier.