Sentvia vs SendGrid
SendGrid sends at scale. Sentvia gives agents inboxes.
SendGrid is a mature transactional sender, but inbound is a raw-MIME webhook dropped after three days, and multi-tenancy starts at $89.95/mo. Sentvia is agent-native: real inboxes, two-way email, and isolation built in.
Enterprise sending vs agent-native inboxes
SendGrid handles high-volume sending. Sentvia is built around the inbox your agents actually live in.
| Capability | Sentvia | SendGrid |
|---|---|---|
| Dedicated inbox per agent | ||
| Two-way email (inbox object) | Inbound Parse · 3-day | |
| Persistent threads & memory | ||
| Per-agent email identity | ||
| Multi-tenant isolation | Subusers ($89.95/mo) | |
| Free tier | 60-day trial | |
| Real-time events | Hooks + WS | Webhooks |
| Custom domains (SPF/DKIM/DMARC) | ||
| SDKs & MCP server |
Agent inboxes without the enterprise add-ons
With SendGrid, receiving and multi-tenancy cost extra. Sentvia includes inboxes, two-way email, and isolation in the base plan.
| Plan tier | Sentvia | SendGrid |
|---|---|---|
| Free tier | 3 inboxes · 3,000 emails | 60-day trial only |
| Entry paid plan | Pro — $19/mo | From $19.95/mo |
| Inboxes (entry plan) | 100 | None (send-only) |
| Two-way receiving | Included | Inbound Parse · dropped after 3 days |
| Multi-tenant isolation | Included | Subusers from $89.95/mo |
| Scale plan | Scale — $99/mo · 1,500 inboxes | Usage / enterprise |
SendGrid pricing/features per sendgrid.com (June 2026). Sentvia pricing per current plans. For comparison only.
Why agent builders choose Sentvia
Inboxes, not just delivery
SendGrid's inbound is a raw-MIME webhook retried for three days then dropped. Sentvia gives each agent a real, persistent inbox with threading and identity.
Tenant isolation built in
Per-customer isolation ships in every plan — no jump to a $89.95/mo Pro tier for subusers as you scale agents.
Simpler, lower entry price
A real free tier and $19/mo for 100 inboxes including receiving — without navigating an enterprise product surface.
Sentvia vs SendGrid — common questions
Can SendGrid receive email for my agent?+
Inbound Parse POSTs raw MIME to your endpoint; if it fails it retries for up to three days, then drops the message. There's no inbox, identity, or threading. Sentvia provides all three.
How does multi-tenancy compare?+
SendGrid's subuser isolation is on the Pro plan at $89.95/mo. Sentvia includes per-customer inbox isolation in every plan.
Is Sentvia simpler to adopt?+
Yes — a focused agent-email API with SDKs and an MCP server, a real free tier, and clear inbox-based pricing.
Does Sentvia send at scale too?+
Yes, with custom domains and dedicated sending reputation on higher tiers, plus full two-way email.
Move from sending email to running agent inboxes
Start free with 3 inboxes and 3,000 emails. Scale to thousands when you're ready.