Drin vs AutoSend.
Credit where it's due: Drin's two-lane, volume-only pricing is modeled on AutoSend's. They got the shape right. Drin takes that same clean model and adds the parts AutoSend leaves out — real inbound, inboxes, longer retention, and a full agent surface.
Free sandbox to integrate · Production from $3/month
Same pricing shape, honestly. Drin's difference is inbound, retention and an agent surface.
AutoSend is a solid, no-nonsense sender, and its entry price ($1/mo) undercuts Drin's ($3/mo) — we won't pretend otherwise. If you want the absolute cheapest way to fire transactional mail and nothing else, AutoSend is fair.
Drin's few extra dollars buy a different category of product: first-class inbound parsed to JSON with real inboxes on your domain, retention that scales with your plan instead of a 7-day floor, and a 54-tool MCP server, CLI and coding-agent skills. If you'll ever receive mail or hand email to an agent, that gap is the whole decision.
Line by line, Drin vs AutoSend.
The whole surface, side by side — no asterisks. Where AutoSend is strong, it says so.
| Platform | DrinSend · Receive · Market | AutoSendLightweight transactional + marketing |
|---|---|---|
| Transactional API · SMTP · webhooks | API · SMTP · SDKs | ✓ |
| Marketing campaigns + automations | Included (lane) | ✓ |
| Two-lane volume pricing | ✓ | ✓ |
| Inbound email → structured JSON | ✓ | — |
| Programmatic inboxes on your domain | Unlimited, your domain | — |
| MCP server + CLI + agent skills | 54-tool server | — |
| Approve-by-reply human gate | ✓ | — |
| Plan-aware warmup + trust engine | ✓ | SPF/DKIM/DMARC |
| Pricing & operations | DrinSend · Receive · Market | AutoSendLightweight transactional + marketing |
|---|---|---|
| Pricing model | Per email volume | Per email volume |
| Production entry price | $3/mo — 5k | $1/mo — 3k |
| Data retention (entry) | 7–180 days by tier | 7 days |
| Overage handling | Move up a tier | $0.0020 / email |
| Free tier | Sandbox — 100 test/mo | Trial / low entry |
The three that decide it.
AutoSend sends. Drin sends and receives — real inboxes on your domain, inbound parsed to clean JSON and threaded.
Retention scales with your plan (7–180 days, longer on Enterprise) instead of a 7-day floor. Receiving isn't metered.
A 54-tool MCP server, a CLI and coding-agent skills — none of which AutoSend has. Your agent runs email end to end.
What you actually pay.
This is the closest match on pricing — same two-lane, volume-only shape. AutoSend is cheaper at the very entry; Drin includes inbound, longer retention and an agent surface for the small premium.
| Price point | DrinVolume-only | AutoSend |
|---|---|---|
| Entry (production) | $3/mo — 5k | $1/mo — 3k |
| Pricing model | Two-lane, per volume | Two-lane, per volume |
| Data retention (entry) | 7 days, scales to 180 | 7 days |
| Inbound email | Included, not metered | Not offered |
| Agent surface | MCP · CLI · skills | Not offered |
Prices are public list figures (July 2026) and can change — always check the vendor's current pricing.
What AutoSend does well
AutoSend is genuinely good at what it targets: cheap, reliable transactional and marketing sending with a clean volume-based model — clean enough that Drin's own two-lane pricing is modeled on it. Its $1 entry is lower than Drin's $3. If your needs are strictly outbound and you want the lowest possible floor, AutoSend is a legitimate pick. Drin's case is scope, not price-at-the-floor: for a few dollars more you also get inbound, inboxes, retention and an agent surface that turn a sender into a platform.
Moving over is a weekend.
- 1
Keep your mental model
Same two-lane, volume-only pricing — pick a tier and a lane. Nothing to relearn about how billing works.
- 2
Move the send call
REST and SMTP map across cleanly. Templates, webhooks and suppressions come with you.
- 3
Switch on what's new
Add an inbox, a webhook to receive, and an MCP key. That's the half AutoSend didn't have.
Asked about AutoSend.
Isn't AutoSend cheaper?+
At the very entry, yes — $1/mo vs Drin's $3/mo. The comparison is what those dollars buy: Drin includes inbound, inboxes, longer retention and an agent surface AutoSend doesn't offer.
Why is Drin's pricing so similar?+
Because it's modeled on AutoSend's two-lane, volume-only approach — we think that's the right shape for email pricing. Drin extends it with more product, not a different meter.
What do I actually gain by switching?+
The receiving half of email (inboxes parsed to JSON), retention that grows with your plan, plan-aware warmup, and a full agent surface (MCP, CLI, skills, approve-by-reply).
Is migrating disruptive?+
Minimal. The billing model is identical and the send APIs map across; you mostly just turn on the features AutoSend never had.